U.S. patent application number 14/444915 was filed with the patent office on 2015-01-29 for system and method for plant cauterization.
The applicant listed for this patent is Blue River Technology, Inc.. Invention is credited to Lee Redden.
Application Number | 20150027041 14/444915 |
Document ID | / |
Family ID | 52389263 |
Filed Date | 2015-01-29 |
United States Patent
Application |
20150027041 |
Kind Code |
A1 |
Redden; Lee |
January 29, 2015 |
SYSTEM AND METHOD FOR PLANT CAUTERIZATION
Abstract
A plant necrosis method including, by a computing system,
identifying, for necrosis, an in-situ plant within a geographic
area, based on measurements received from a set of sensors;
selecting a treatment position on the in-situ plant for electric
discharge application based on a plant cross-sectional dimension;
and applying electric discharge to the treatment position.
Inventors: |
Redden; Lee; (Mountain View,
CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Blue River Technology, Inc. |
Mountain View |
CA |
US |
|
|
Family ID: |
52389263 |
Appl. No.: |
14/444915 |
Filed: |
July 28, 2014 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61859109 |
Jul 26, 2013 |
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Current U.S.
Class: |
47/1.3 |
Current CPC
Class: |
A01M 21/043 20130101;
A01M 21/046 20130101; A01G 22/00 20180201; A01M 21/04 20130101 |
Class at
Publication: |
47/1.3 |
International
Class: |
A01M 21/04 20060101
A01M021/04; G06K 9/46 20060101 G06K009/46 |
Claims
1. A plant necrosis method, comprising: identifying a plant,
in-situ, within a geographic area based on measurements received
from a set of sensors; determining whether to necrose the plant
based on a geographic area output parameter for the geographic
area; applying electric discharge to the plant.
2. The method of claim 1, further comprising: in response to a
determination to necrose the plant: identifying a section of the
plant stem contiguous with a substrate supporting the plant;
estimating a cross-sectional minima of the section; and selecting a
treatment position on the plant for electric discharge application,
the treatment position located between the cross-sectional minima
of the section and the substrate; wherein applying the electric
discharge comprises applying the electric discharge to the
treatment position.
3. The method of claim 1, further comprising determining a set of
operational parameters for the electric discharge based on an
electrical conductivity of the substrate and target growth
parameters for secondary plants within the geographic area that are
electrically connected to the plant, wherein the target growth
parameters are determined based on the crop yield maximization for
the geographic area.
4. A plant necrosis method comprising: by a computing system:
identifying, for necrosis, an in-situ plant within a geographic
area, based on measurements received from a set of sensors;
selecting a treatment position on the in-situ plant for electric
discharge application based on a plant cross-sectional dimension;
and applying electric discharge to the treatment position.
5. The method of claim 4, wherein applying electric discharge to
the treatment position comprises applying electric discharge to the
treatment position with a Tesla coil.
6. The method of claim 3, wherein the set of sensors comprises a
stereo camera, wherein the measurements comprises a stereoview.
7. The method of claim 6, wherein identifying the plant portion for
necrosis comprises selecting the plant portion for necrosis to
maximize a geographic area output parameter for the geographic
area.
8. The method of claim 4, further comprising determining a set of
electric discharge parameters.
9. The method of claim 8, wherein determining the set of electric
discharge parameters comprises determining the set of electric
discharge parameters based on a translation velocity of a treatment
mechanism configured to emit the electric discharge.
10. The method of claim 9, wherein a selected electrical current
for the electric discharge varies as a function of the translation
velocity.
11. The method of claim 8, wherein determining the set of electric
discharge parameters comprises determining the set of electric
discharge parameters to maximize an output parameter for the
geographic area based on measurements for the geographic area,
wherein the applied electric discharge substantially satisfies the
set of electric discharge parameters.
12. The method of claim 11, wherein the set of electric discharge
parameters are determined based on: an estimated stimulation effect
of the electric discharge on a growth parameter of each of a set of
secondary plants located within the geographic area and
electrically connected to the first plant; and a target growth
parameter for each of the set of secondary plants, determined based
on output parameter maximization for the geographic area.
13. The method of claim 12, wherein: the output parameter comprises
crop yield and the target growth parameter for each secondary plant
is selected to maximize crop yield for the geographic area; and the
stimulation effect is estimated based on electrical conductivity of
a substrate mechanically supporting the plant.
14. The method of claim 11, wherein determining the set of electric
discharge parameters for comprises: identifying a set of secondary
plants electrically coupled to the first plant through the
substrate, based on a substrate conductivity; determining a target
plant parameter value for each secondary plant by optimizing the
plant parameter for the geographic area; determining a portion of
the electrical discharge estimated to be applied to each secondary
plant, based on a set of electric discharge parameters; determining
an effect of the respective portion of the electrical discharge on
each secondary plant; for each secondary plant, comparing the
effect of the respective portion of the electrical discharge on
each secondary plant with the target plant parameter for each
secondary plant; and selecting the set of electric discharge
parameters in response to the effect of the respective portion of
the electrical discharge on each secondary plant falling within a
predetermined threshold of the target plant parameter for each
secondary plant.
15. The method of claim 4, wherein selecting a treatment position
on the plant for electric discharge application comprises
identifying a stem of the plant and selecting a treatment position
on the stem.
16. The method of claim 13, wherein selecting a treatment position
further comprises: identifying a first stem portion having a
cross-sectional dimension smaller than a second stem portion, the
second stem portion located between the first stem portion and the
substrate; selecting a position on the stem, electrically located
between the first stem portion and the substrate, as the treatment
position.
17. The method of claim 4, further comprising verifying plant
treatment with a verification sensor.
18. The method of claim 17, wherein the verification sensor
comprises a camera, wherein verifying plant treatment comprises:
capturing an image of the plant portion after electric discharge
application; and analyzing the image of the plant portion for
cauterization indicators.
19. The method of claim 19, wherein further comprising adjusting an
electric discharge parameter based on the image analysis.
20. A plant necrosis method, comprising: identifying a geographic
region in which a set of plants to be necrosed are located; and in
response to collocation of an active area of an electric discharge
mechanism and the geographic region, operating the electric
discharge mechanism in the treatment mode based on a set of
operation parameters, wherein the operation parameters are selected
based on a system parameter.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to U.S. Provisional
Application No. 61/859,109 filed 26 Jul. 2013, which is
incorporated in its entirety by this reference.
[0002] This application is related to U.S. application Ser. No.
13/788,320 filed 7, Mar. 2013, which is incorporated in its
entirety by this reference.
TECHNICAL FIELD
[0003] This invention relates generally to the agricultural field,
and more specifically to a new and useful automated system and
method of treatment selection and application in the agricultural
field.
BRIEF DESCRIPTION OF THE FIGURES
[0004] FIG. 1 is a schematic representation of a plant treatment
system operating within a geographic area including a plurality of
plants.
[0005] FIGS. 2A and 2B are end and side views of a variation of the
plant treatment system.
[0006] FIGS. 3, 4, and 5 are a schematic representation of a first,
second, and third variation of the plant treatment system,
respectively, and a measurement captured by the detection mechanism
of the respective plant treatment system.
[0007] FIGS. 6A, 6B, and 6C are schematic representations of a
first, second, and third detection mechanism orientation relative
to a plant, substrate plane and/or gravity vector.
[0008] FIG. 7 is a schematic representation of a variation of a
spray mechanism, wherein the spray mechanism can optionally include
a secondary reservoir.
[0009] FIG. 8 is a schematic representation of a high-pressure
spray mechanism operating in the treatment mode.
[0010] FIGS. 9A, 9B, and 9C are schematic representations of a
first, second, and third example dislodgement profile,
respectively.
[0011] FIGS. 10A, 10B, and 10C are schematic representations of a
system, including a high-pressure spray dislodgement mechanism:
identifying a plant and junction distance, operating high-pressure
spray dislodgement mechanism in the treatment mode at an initial
spray position, and adjusting the spray pattern as a function of
nozzle proximity to the junction distance, respectively.
[0012] FIGS. 11A and 11B are schematic representations of a first
variation of an electric discharge mechanism applying electric
discharge to a plant and a resultant cauterized plant section,
respectively.
[0013] FIG. 12 is a schematic representation of a second variation
of an electric discharge mechanism applying electric discharge to a
plant.
[0014] FIGS. 13A, 13B, and 13C are schematic representations of
low-pressure spray mechanism treatment of a plant in a first,
second, and third orientation, respectively.
[0015] FIG. 14 is a flowchart diagram of the method of plant
treatment.
[0016] FIG. 15 is a flowchart diagram of a variation of the method
of plant treatment.
[0017] FIGS. 16A and 16B are schematic representations of treatment
mechanism selection in a first and second variation of the
treatment mechanism, respectively.
[0018] FIGS. 17A and 17B is a schematic representation of selecting
a treatment for a plant based on geographic area output parameter
optimization and treating the plant with the selected treatment,
respectively.
[0019] FIGS. 18, 19, and 20 are schematic representations of
indirect treatments of secondary plants due to primary plant
treatment for a first, second, and third treatment variant,
respectively.
[0020] FIG. 21 is a schematic representation of treatment selection
based on anticipated indirect secondary plant treatment.
[0021] FIGS. 22A and 22B are schematic representations of: creating
a high resistance plant section by reducing the cross-section of
the plant section; and applying electric discharge to a plant
portion distal electric ground, across from the plant section,
respectively.
[0022] FIGS. 23A and 23B are schematic representations of: emitting
charged droplets of a single polarity into the ambient environment
surrounding a plant and electrically connecting the plant to the
charging mechanism; and a circuit representative of the resultant
system, respectively.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] The following description of the preferred embodiments of
the invention is not intended to limit the invention to these
preferred embodiments, but rather to enable any person skilled in
the art to make and use this invention.
1. System
[0024] As shown in FIG. 1, the system 10 for plant treatment
includes a detection mechanism 100, a treatment mechanism 200, and
a control system 300. The system 10 can additionally include a
mounting mechanism 400, a verification mechanism 500, a power
source, digital memory, communication apparatus, or any other
suitable component.
[0025] The system 10 functions to apply a treatment to one or
multiple plants within the geographic area. The treatment
preferably functions to regulate plant growth. The treatment is
preferably directly applied to a single plant (e.g., hygroscopic
material), but can alternatively be directly applied to multiple
plants, indirectly applied to one or more plants, applied to the
environment associated with the plant (e.g., soil, atmosphere, or
other suitable portion of the plant environment adjacent to or
connected by an environmental factor, such as wind), or otherwise
applied to the plants. Treatments that can be applied include
necrosing the plant, necrosing a portion of the plant (e.g.,
pruning), regulating plant growth, or any other suitable plant
treatment. Necrosing the plant can include dislodging the plant
from the supporting substrate S110, incinerating a portion of the
plant, applying a necrosing concentration of working fluid (e.g.,
fertilizer, hormone, water, etc.) to the plant, or necrosing the
plant in any other suitable manner. Regulating plant growth can
include promoting plant growth, promoting growth of a plant
portion, hindering (e.g., retarding) plant or plant portion growth,
or otherwise controlling plant growth. Examples of regulating plant
growth includes applying growth hormone to the plant, applying
fertilizer to the plant or substrate, applying a disease treatment
or insect treatment to the plant, electrically stimulating the
plant, watering the plant, pruning the plant, or otherwise treating
the plant. Plant growth can additionally be regulated by pruning,
necrosing, or otherwise treating the plants adjacent the plant.
[0026] The plants are preferably crops, but can alternatively be
weeds or any other suitable plant. The crop is preferably corn, but
can alternatively be lettuce, soy beans, rice, carrots, tomatoes,
broccoli, cabbage, potatoes, wheat or any other suitable commercial
crop. The plant field in which the method is used is preferably an
outdoor plant field, but can alternatively be plants within a
greenhouse, a laboratory, a grow house, a set of containers, a
machine, or any other suitable environment. The plants are
preferably grown in one or more plant rows (e.g., plant beds),
wherein the plant rows are preferably substantially parallel, but
can alternatively be grown in a set of plant pots, wherein the
plant pots can be ordered into rows or matrices or be randomly
distributed, or be grown in any other suitable configuration. The
crop rows are preferably spaced between 2 inches to 45 inches apart
(e.g. as determined from the longitudinal row axis), but can
alternatively be spaced any suitable distance apart. The plants
within each plant field, plant row, or plant field subdivision
preferably includes the same type of crop (e.g. same genus, same
species, etc.), but can alternatively include multiple crops (e.g.,
a first and a second crop), both of which are to be analyzed. Each
plant preferably includes a stem, arranged superior (e.g., above)
the substrate 70, which supports the branches, leaves, and fruits
of the plant. Each plant can additionally include a root system
joined to the stem, located inferior the substrate plane (e.g.,
below ground), that supports the plant position and absorbs
nutrients and water from the substrate 70. The plant can be a
vascular plant, non-vascular plant, ligneous plant, herbaceous
plant, or be any suitable type of plant. The plant can have a
single stem, multiple stems, or any number of stems. The plant can
have a tap root system or a fibrous root system. The substrate 70
is preferably soil, but can alternatively be a sponge or any other
suitable substrate.
[0027] The system 10 can additionally function to traverse through
a geographic area, such as a field. The system 10 is preferably a
ground-based system, but can alternatively be an airborne system or
any other suitable system. The system 10 can be configured (e.g.,
be sized) to span at least a first and a second crop furrow (e.g.,
encompass a crop row), as shown in FIG. 3; be configured to
translate along a single furrow, as shown in FIG. 4; be configured
to translate between stems of adjacent plants (e.g., sized on the
order of several inches), as shown in FIG. 5; be configured to
encompass an entire or substantial portion of a crop field, or have
any other suitable dimension. The system 10 is preferably a passive
system, and removably or permanently mounts to a driving mechanism,
such as a tractor, that applies a driving force (e.g., a pulling or
pushing force) to translate the system within the geographic area.
Alternatively, the system can be an active system, and translate
within the geographic area automatically or in response to receipt
to driving instructions.
[0028] The system 10 can additionally function to automatically
identify a plant within the geographic area. The system 10
preferably identifies the plant based on measurements from the
detection mechanism 100, but can alternatively identify the plant
in any other suitable manner. The plant is preferably identified
(uniquely or generically) based on a plant identifier, wherein
information associated with the plant can be retrieved based on the
plant identifier, but the plant can alternatively be generically
identified or otherwise identified. The plant identifier can be a
geographic location (e.g., set of geographic coordinates, location
relative to a predetermined location, etc.), a pattern of plant
features (e.g., stomatal pattern, etc.), a growth or necrosis
pattern of secondary plants adjacent the plant 40, a unique marker
adjacent the plant, or any other suitable unique identifier.
[0029] The system 10 can additionally function to determine a
treatment for a plant. The system 10 preferably individually
determines a treatment for each individual plant, but can
alternatively determine a treatment for multiple adjacent plants,
multiple plants within the geographic area, or determine a
treatment for any other suitable set of plants. The system 10 can
additionally select a treatment mechanism 200 from a plurality of
treatment mechanisms and/or determine a set of operation parameters
for the treatment mechanism 200 based on the determined
treatment.
[0030] The treatment is preferably determined to optimize an output
parameter for the geographic area (geographic area output
parameter). Geographic area output parameter optimization can
include minimizing or maximizing the geographic area output
parameter, or otherwise optimizing the geographic area output
parameter. The geographic area output parameter can include plant
or crop yield (e.g., crop yield, agronomical output, or crop per
unit area of geographic area or land cultivation, etc.), color,
size, compound concentration (e.g., sugar concentration), compound
quantity (e.g., sugar quantity), uniformity (e.g., inter-plant
spacing, plant size, etc.), crop concentration per plant, input
cost (e.g., minimize input cost), risk (e.g., minimize input risk),
or any other suitable geographic area output parameter. The crop
can include the fruit, leaves, stems, roots, entirety, or any other
suitable portion of a plant. In one variation of the method,
optimizing the geographic area output parameter includes maximizing
crop yield for the geographic area (e.g., field or section
thereof). In another variation of the method, optimizing the
geographic area output parameter includes minimizing the number of
weeds within the geographic area (e.g., field or section thereof).
In one example of the method, treatments are applied to plants to
speed up or slow down the plant's development, such that the plant
ripens at substantially the same time as the majority of similar
plants within the geographic area (e.g., within a margin of error
of several minutes, hours, days, weeks, or months).
[0031] The treatment can additionally or alternatively be
determined to optimize an output parameter for a plant or crop.
Plant output parameters can include measures of plant health (e.g.,
visual parameters, such as an amount of green light reflected by
the plant or a ratio of green to brown light reflected by the
plant, haptic parameters, such as turgidity, audio parameters, such
as ultrasound measurements, dimension measurements, etc.), plant
yield (e.g., the fruit concentration on the plant), plant color,
plant composition, plant balance (e.g., plant lean toward one
side), or any other suitable plant parameter.
[0032] The treatment can additionally or alternatively be
determined based on historical measurements for the geographical
area. The historical measurements can include historical treatments
on the plant, historical treatments on secondary plants associated
with the plant by an ambient environment feature (e.g., landform,
wind, soil conductivity, temperature, humidity, etc.), historical
ambient environment parameters (e.g., amount of sunlight, amount of
waterfall, amount of wind, etc.), or any other suitable historical
measurements. The treatment can alternatively or additionally be
determined based on classifiers, machine learning outputs, or any
other suitable parameter determined from historical
measurements.
[0033] The treatment can additionally or alternatively be
determined based on anticipated measurements for the geographical
area. Anticipated measurements can include forecasted weather
(e.g., light, wind, rain, electricity, etc.), forecasted treatments
to secondary plants 50 within the geographic area, forecasted
treatments to tertiary plants within a second geographic area
different from the first geographic area, or any other suitable
anticipated measurements. Anticipated measurements can additionally
include anticipated effects of previous treatments on previously
treated plants 20. However, the treatment can be selected based on
any other suitable anticipated measurement, or any other suitable
output parameter associated with the crop, plant, or geographic
area.
[0034] The detection mechanism 100 of the plant treatment system 10
functions to record a measurement 102 of the ambient environment of
the system 10, more preferably a measurement of the geographic
area, even more preferably a measurement of a plant within the
geographic area. The plant is preferably identified based on the
measurement 102 (first measurement). The detection mechanism 100 is
preferably configured to record the measurements during system
movement or traversal within the geographic area, but can
alternatively or alternatively record the measurements when the
system is static within the geographic area. The detection
mechanism 100 preferably sends the measurement to the control
system 300 for processing and subsequent plant identification, but
can alternatively process the measurement to identify the plant
itself.
[0035] The detection mechanism 100 preferably includes a
measurement area, such as a field of view or any other suitable
measurement area. The detection mechanism 100 can be an optical
sensor (e.g., a spectral imaging system), acoustic sensor, haptic
sensor, electromagnetic sensor, or any other suitable sensor. The
system 10 can include one or more detection mechanisms. The
measurement can be a single image, a set of images, a force change,
a resistivity change, an audio pattern, an object profile, a
geographic location (e.g., set of coordinates), or any other
suitable measurement. The detection mechanism 100 is preferably
arranged with the measurement area oriented at an angle relative to
the gravity vector or the substrate plane, such that the
measurement includes both the substrate plane and all or a portion
of the plant. However, the measurement can alternatively only
include the plant, the substrate plane, or any other suitable
vector. In a first variation, as shown in FIG. 6A, the detection
mechanism measurement area includes a vector parallel to the
substrate surface (e.g., such that the detection mechanism 100 is
oriented horizontally and/or measures a side of the plant). In a
second variation, as shown in FIG. 6B, the detection mechanism
measurement area includes a vector parallel to a gravity vector
(e.g., such that the detection mechanism 100 is oriented above the
plant and/or measures the top of the plant or a length of the
plant). In a third variation, as shown in FIG. 6C, the detection
mechanism measurement area includes a vector at an angle between a
plane of the substrate surface and a gravity vector (e.g., such
that the detection mechanism 100 measures both a portion of the
plant and a portion of the substrate 70). However, the detection
mechanism 100 can be otherwise angled. The detection mechanism
angle is preferably fixed, but can alternatively be adjustable. The
detection mechanism 100 can be arranged at a fixed height or
distance from the substrate 70 (e.g., within a foot of the
substrate, within three feet of the substrate, within ten feet of
the substrate, etc.), or can have an adjustable height.
[0036] In a first variation, the detection mechanism 100 includes a
stereocamera or plenoptic camera that records a stereoview (e.g.,
an image formed from a first and second image). The stereocamera
can include a first and second lens, a first and second optical
sensor (e.g., CCD), or be any other suitable stereocamera. The
stereocamera is preferably arranged such that the alignment axis of
the first and second images is substantially parallel the substrate
plane or rotational axes alignment axis of a first and second
system wheel 11, but can alternatively be arranged such that the
alignment axis of the first and second images is arranged within a
plane substantially parallel the substrate plane or perpendicular a
gravity vector. However, the stereocamera can be otherwise
arranged.
[0037] In a second variation, the detection mechanism 100 includes
a multispectral camera that captures image data at specific
frequencies across the electromagnetic spectrum. The wavelengths
can be separated by filters, recorded by sensors that are sensitive
to specific wavelengths, or otherwise specifically identified. The
multispectral camera can capture images at a single wavelength or
multiple wavelengths. The wavelengths can include wavelengths
between 515 to 600 nm (green), 450 to 520 nm (blue), 600 to 690 nm
(red), 750-900 nm (near infrared), 1550-1750 nm (mid-infrared,
e.g., to further identify soil moisture content, etc.), 2080-2350
nm (mid-infrared, e.g., to image soil, moisture, geographical
features, etc.), 10400-12500 nm (thermal infrared), or any other
suitable wavelength. The spectral band usage can be true-color,
green-red-infrared, blue-NIR-MIR, or any other suitable
combination. The electromagnetic waves can be ambient
electromagnetic waves (e.g., provided by a star, such as the sun),
but can alternatively be provided by any other suitable
electromagnetic wave source.
[0038] However, the detection mechanism 100 can be a CCD camera,
single lens camera, monocular camera, projected light imaging
system, projected pattern imaging system, scanning imaging system,
time-of-flight system, hyperspectral imaging system, LIDAR system
(light detection and ranging system), dyanmometer, IR camera,
thermal camera, geographic location sensor (e.g., a GPS system,
cellular tower triangulation system, etc.), or any other suitable
detection mechanism 100 capable of recording a measurement from
which a plant can be identified. The detection mechanism 100 can
additionally or alternatively include an ambient environment
sensor, such as a light sensor, temperature sensor, humidity
sensor, wind speed sensor, or any other suitable sensor.
[0039] The detection mechanism 100 can additionally include a
signal emitter that functions to provide a signal, wherein the
reflectance of the signal is captured by the detection mechanism
100. The emitter can be light having a set of electromagnetic
wavelengths, an array of lights (e.g., a grid of lasers), sound
having a set of acoustic wavelengths, or emit any other suitable
signal. The emitter is preferably statically mounted relative to a
detection mechanism mounting point, but can alternatively be mobile
relative to the detection mechanism mounting point.
[0040] The detection mechanism 100 can additionally include a
shield that functions to block ambient environmental signals from
interfering with the detection mechanism measurement. For example,
the shield can be a sun shield that functions to block sunlight
from the plant during detection mechanism measurement. The shield
can be an EMI shield, a light shield, an acoustic shield, a wind
shield, or a shield for any other suitable ambient environment
feature. The shield is preferably used with a system including an
emitter, but can alternatively be used independent of systems
including emitters. The shield can additionally or alternatively
block ambient environment forces or substances from the treatment
area (e.g., form a controlled environment about the plant). For
example, the shield can block wind from the volume surrounding the
plant to be treated.
[0041] The treatment mechanism 200 of the system 10 functions to
apply a treatment to the identified plant. The treatment mechanism
200 preferably includes an active area 201 to which the treatment
mechanism 200 applies the treatment. The effect of the treatment
can include plant necrosis, plant growth stimulation, plant portion
necrosis or removal, plant portion growth stimulation, or any other
suitable treatment effect. The treatment can include plant
dislodgement from the substrate 70, severing the plant (e.g.,
cutting), plant incineration, electrical stimulation of the plant,
fertilizer or growth hormone application to the plant, watering the
plant, light or other radiation application to the plant, injecting
one or more working fluids into the substrate 70 adjacent the plant
(e.g., within a threshold distance from the plant), or otherwise
treating the plant. The treatment mechanism 200 is preferably
operable between a standby mode, wherein the treatment mechanism
200 does not apply a treatment, and a treatment mode, wherein the
treatment mechanism 200 is controlled to apply the treatment.
However, the treatment mechanism 200 can be operable in any other
suitable number of operation modes.
[0042] The system 10 can include a single treatment mechanism 200,
or can include multiple treatment mechanisms. The multiple
treatment mechanisms can be the same type of treatment mechanism,
or be different types of treatment mechanisms. The treatment
mechanism 200 can be fixed (e.g., statically coupled) to the
mounting mechanism 400 or relative to the detection mechanism 100,
or actuate relative to the mounting mechanism 400 or detection
mechanism 100. For example, the treatment mechanism 200 can rotate
or translate relative to the detection mechanism 100 and/or
mounting mechanism 400. In one variation, the system 10 includes an
array of treatment mechanisms, wherein a treatment mechanism 200 of
the array is selected to apply the treatment to the identified
plant in response to identification of the plant and the plant
position relative to the array. In a second variation, the system
10 includes a single treatment mechanism, wherein the treatment
mechanism is actuated or the system 10 moved to align the treatment
mechanism active area with the targeted plant segment.
[0043] In a first variation, as shown in FIG. 7, the treatment
mechanism 200 can include a spray mechanism 210, more preferably a
high pressure spray mechanism, wherein the active area includes a
spray area. The high pressure spray mechanism preferably functions
to spray a high pressure jet or spray to dislodge the plant from
the substrate, but can alternatively or additionally function to
apply a force (e.g., a cutting force) to an portion of the plant
(e.g., plant stem, leaf, branch, root, or any other suitable plant
portion) or substrate, or function to treat the plant in any other
suitable manner. The high pressure spray mechanism preferably does
not spray working fluid in the standby mode, and sprays a working
fluid, more preferably a working liquid, in the treatment mode. The
working fluid can be water, fertilizer, growth hormone, or any
other suitable fluid. The working fluid is preferably emitted
(e.g., sprayed) at a spray pressure of approximately 1,200 psi,
within a margin of error (e.g., a 5% margin of error, 2% margin of
error, etc.), but can alternatively be emitted at a pressure
between 900 psi and 3,200 psi, or at any other suitable pressure.
The nozzle is preferably positioned within several centimeters
(e.g., 1 cm, 5 cm, 10 cm, etc.) of the substrate surface, but can
alternatively be positioned a meter away from the substrate
surface, 10 meters away from the substrate surface, or positioned
any suitable distance away from the substrate surface. The high
pressure spray mechanism preferably sprays working fluid at 1,500
psi, but can alternatively spray working fluid at 500 psi, 10 psi,
3,000 psi, or any other suitable pressure.
[0044] The high pressure spray mechanism preferably includes a
nozzle 211. The nozzle 211 is preferably oriented at a 20 degree
angle relative to the substrate plane, but can alternatively be
oriented at a 45 degree angle, 30 degree angle, 90 degree angle
(e.g., pointing straight down at the substrate plane), or any other
suitable angle 213 relative to the substrate plane, as shown in
FIG. 8. The nozzle 211 can alternatively be actuatable relative to
the mounting mechanism or detection mechanism. The nozzle 211 is
preferably operable between a first and second mode that results in
a first and second spray pattern 212, respectively, in the
treatment mode, as shown in FIGS. 10A, 10B, and 10C. However, the
nozzle 211 can be operable in any suitable number of modes. The
first spray pattern preferably functions to create an initial crack
in the substrate 70, while the second spray pattern functions to
remove wide swaths of substrate 70. The first spray pattern is
preferably a solid stream (e.g., solid cone), but can alternatively
be a hollow cone, full cone, or any other suitable spray pattern
capable of providing a high impact per unit area. The second spray
pattern is preferably a flat spray pattern (e.g., a flat fan),
capable of covering a larger area than the first spray pattern.
Nozzle operation preferably smoothly transitions from the first
spray pattern to the second spray pattern, but can alternatively
transition from the first spray pattern to the second spray pattern
in a stepwise manner (e.g., suddenly transition from the first
spray pattern to the second spray pattern). Alternatively, the
first and second spray patterns can each be created by a first and
second nozzle, respectively. The nozzle 211 is preferably a
single-fluid nozzle, but can alternatively be a multiple-fluid
nozzle. The nozzle 211 can be a plain-orifice nozzle, a
shaped-orifice nozzle, a surface-impingement single-fluid nozzle, a
pressure-swirl single-fluid spray nozzle, a solid-cone single-fluid
nozzle, a compound nozzle, an internal mix two-fluid nozzle,
external-mix two-fluid nozzle, or any other suitable nozzle. The
nozzle 211 can have a fixed aperture or an actuatable aperture.
Nozzle emission (e.g., nozzle spray) is preferably controlled by a
solenoid 226, but can alternatively be controlled by a valve or any
other suitable control mechanism. The solenoid 226 preferably
controls the nozzle to open (e.g., spray) in response to receipt of
a spray command from the control system 300, but can alternatively
be passively or mechanically controlled.
[0045] The high pressure spray mechanism can additionally include a
pressurization system 220, including a reservoir 221 and a pump
222. The high pressure spray mechanism can additionally include a
bypass valve 223 fluidly connecting an inlet manifold 228 fluidly
connected to the reservoir 221, a first outlet manifold 224 fluidly
connected to the reservoir 221, and a second outlet manifold 225
fluidly connected to the nozzle 211. The bypass valve 223 is
preferably operable between a closed mode, wherein the bypass valve
223 fluidly disconnects the nozzle 211 from the reservoir 221, and
an open mode, wherein the bypass valve 223 fluidly connects the
nozzle 211 to the reservoir 221, more preferably fluidly connects
the inlet manifold with the nozzle 211. The bypass valve 223 can be
passive, wherein the cracking pressure is substantially the same as
the desired spray pressure, or can be active, wherein bypass valve
actuation from the closed to open mode is actively controlled, such
as by the control system 300. The bypass valve 223 can fluidly
disconnect (e.g., seal) the inlet manifold from the first outlet
manifold 224, or fluidly connect all three fluid manifolds. The
pump 222 preferably pressurizes the reservoir 221 to the spray
pressure by pumping the working fluid into the inlet manifold,
through the bypass valve 223, and through the first outlet manifold
224 into the reservoir 221. The pump 222 can pressurize the
reservoir 221 with secondary fluid from the ambient environment
(e.g., from a fluid source or air), or pressurize the working fluid
in the reservoir 221 in any other suitable manner. The bypass valve
223 preferably opens in response to the inlet manifold fluid
pressure substantially meeting or exceeding the desired spray
pressure, such that the inlet manifold is fluidly connected to the
nozzle 211. In this variation, the treatment mechanism 200 can
additionally include a pressure sensor or flow sensor that measures
the fluid pressure or flowrate at the nozzle 211, inlet manifold,
bypass valve 223, first outlet manifold 224, second outlet manifold
225, or reservoir 221, wherein the treatment parameters (e.g.,
initial spray time or position) can be subsequently adjusted or
determined based on the measured working fluid parameters.
[0046] The high pressure spray mechanism can additionally or
alternatively include a secondary reservoir 227 (e.g., accumulator)
fluidly connected to the first reservoir 221 and the nozzle 211,
wherein the pump 222 pumps working fluid from the reservoir 221 to
the accumulator 227. The accumulator 227 functions to retain a
volume of working fluid sufficient to spray a predetermined number
of plants. The accumulator 227 can additionally function to
pressurize the fluid. The accumulator 227 preferably fluidly
connected to the reservoir 221 between the pump 222 and the nozzle
211. The high pressure spray mechanism can additionally include a
valve that controls fluid flow between the accumulator 227 and the
nozzle 211. When a bypass valve 223 is used, as in the variant
described above, the accumulator 227 is preferably fluidly
connected to the inlet manifold between the pump 222 and the valve
223. The accumulator 227 is preferably connected in parallel with
the nozzle 211, but can alternatively be connected in series with
the nozzle 211. The accumulator 227 can be additionally fluidly
connected to a secondary working fluid reservoir, wherein metered
amounts of secondary working fluid (e.g., fertilizer, growth
hormone, etc.) can be provided to the accumulator 227 to mix with
the primary working fluid (e.g., water) within the accumulator 227.
However, the high pressure spray mechanism can include any other
suitable components.
[0047] In a second variation, the treatment mechanism 200 can
include an electrical discharge mechanism 230, which functions to
apply electric discharge 245 to a plant. The electric discharge can
stimulate the plant, cauterize (e.g., necrose, incinerate) the
plant, or otherwise treat the plant. The electric discharge
preferably has a high voltage (e.g., large potential) and a large
current, but can alternatively have a high voltage and low current,
low voltage and high current, or have any other suitable electrical
parameters. The electric discharge parameters are preferably set,
but can alternatively be adjustable (e.g., based on the system
traversal velocity, ambient environment electrical conductivity,
etc.). The electrical discharge voltage is preferably approximately
50,000V (e.g., within a margin of error, such as 5% error, 2%
error, etc.), but can alternatively be between 10,000 V and 100,000
V, or have any other suitable value. The electric discharge power
is preferably related to the size of the plant, but can
alternatively be related to any other suitable plant parameter. The
electric discharge can be an electrostatic discharge (e.g., plasma
discharge), corona discharge, dielectric barrier discharge, brush
discharge, electric arc, leader, partial discharge, electric glow
discharge, or any other suitable electrical discharge. The electric
discharge mechanism 230 is preferably actuatable relative to the
mounting mechanism 400 or detection mechanism 100, such that the
electric discharge can be applied to a specific portion of the
plant, but can alternatively be static relative to the mounting
mechanism 400 or detection mechanism 100.
[0048] The electrical discharge mechanism is preferably a Tesla
coil 240, but can alternatively be a corona discharge mechanism,
dielectric barrier discharge mechanism, or any other suitable
discharge mechanism. As shown in FIGS. 12A and 12B, the Tesla coil
240 preferably includes a primary coil 241 extending in parallel
with a longitudinal axis of a secondary coil 242, wherein the
primary coil 241 encircles the secondary coil 242. The secondary
coil 242 preferably functions as electrical ground, while the
primary coil 241 is held at an elevated voltage, such that a
potential difference is maintained between the primary and
secondary coils. The primary and secondary coils are preferably
concentric, but can alternatively be coaxial, offset, or arranged
in any other suitable configuration. The primary and secondary
coils are preferably electrically connected together in parallel,
but can alternatively be electrically connected in series. However,
the Tesla coil 240 can include any suitable number of coils
electrically connected in parallel, in series, or a combination
thereof. The Tesla coil 240 can additionally include a conducting
wire electrically connected to the primary and/or secondary coil
that functions to direct the electrical discharge. The conducting
wire is preferably flexible, such that a linear segment of the
plant (e.g., selected for electric discharge application) is
capable of contacting a linear segment of the conducting wire, but
can alternatively be substantially rigid, such that a segment of
the plant contacts a point of, a small segment of, or does not
contact the conducting wire, or such that the conducting wire is
capable of mechanically penetrating a portion of the stem or
branch. Alternatively, as shown in FIG. 12, the electric discharge
mechanism 230 can include a first electrode 243 and second
electrode 244 biased at different electrical potentials, or include
any other suitable electric discharge mechanism.
[0049] In a third variation, the treatment mechanism 200 can
include a low pressure spray mechanism that functions to apply a
working fluid to the plant. The application is preferably
mechanically non-destructive, but can alternatively be destructive.
The working fluid is preferably applied to the top-facing leaves of
the plant (as shown in FIG. 13A), but can alternatively be applied
to any plant structure superior (e.g., above) the substrate 70,
such as the side of the plant (as shown in FIG. 13B), the top of
the plant (as shown in FIG. 13C), or any other suitable structure.
The working fluid is preferably one or more growth hormones, but
can alternatively be fertilizer, water, insecticide, fungicide,
barbicide, dessicants, defoliants, plant growth regulators, or any
other suitable working fluid. The working fluid can be liquid,
solid, gas, liquid with suspended particulates, or have any other
suitable composition. The low pressure spray mechanism preferably
generates a mist of the working fluid (e.g., an atomized spray or
aerosol of the working fluid), but can alternatively generate
droplets of any suitable size to mist, spray, or otherwise apply
the working fluid to the plant. The low pressure spray mechanism
preferably includes a nozzle 211, a reservoir 221, and a pump 222.
The low pressure spray mechanism can be substantially similar to
the high pressure spray mechanism, or can be substantially
different. The nozzle 211 of the low pressure spray mechanism can
be rotary atomizer, ultrasonic atomizer, vibrating orifice aerosol
generator, aerosol spray, electrospray, any of the nozzles
described for the high pressure spray mechanism, or any other
suitable aerosol-generating mechanism. The low pressure spray
mechanism can additionally include a fan or other carrying fluid
movement mechanism that functions to bias the droplets toward the
target plant, wherein the carrying fluid is preferably air, but can
alternatively be wind, water, or any other suitable ambient fluid.
Alternatively, the system 10 can include an ambient wind monitoring
sensor, wherein nozzles upstream of the targeted plant portion are
actuated to dispense the working fluid to the targeted plant
portion. The low pressure spray mechanism can apply the working
fluid at a low pressure (e.g., less than 1 psi), between 5-10 psi,
between 5-25 psi, or at any other suitable pressure.
[0050] The droplets emitted by the low pressure spray mechanism can
be uncharged or charged, such that the droplets are attracted to
the plant. The droplets are preferably charged to a single polarity
(e.g., such that only positively or negatively charged droplets are
emitted), but can alternatively be charged to with both positive
and negative charges. The droplets are preferably charged by a
charging mechanism, such as an electrode (e.g., a rail electrode, a
circular electrode, a point electrode, etc.). The charging
mechanism preferably functions to generate a charging field
proximal the low pressure spray mechanism orifice, more preferably
at a point external the low pressure spray mechanism but
alternatively at a point internal the low pressure spray mechanism.
The charging mechanism can charge the droplets as the droplets are
formed, before the droplets are formed, or after the droplets are
formed. The charging mechanism can be located within the low
pressure spray mechanism orifice (e.g., aligned with the orifice
central axis, etc.), encircle the low pressure spray mechanism
orifice, be offset from the low pressure spray mechanism orifice
(e.g., located in a separate plane than that of the orifice), be
arranged adjacent and external the orifice, or be arranged in any
other suitable configuration. However, the droplets can be
otherwise charged. In variants in which droplets of a single
polarity are emitted, the low pressure spray mechanism can
additionally include an electrical connection that electrically
connects the charging mechanism to the plant, such that the plant
forms a portion of a circuit (e.g., functions as the electrical
ground or is charged to the polarity opposing that of the droplets,
thereby attracting the charged droplets).
[0051] The control system 300 of the system 10 functions to control
treatment mechanism operation. The control system 300 can
additionally function to select the treatment mechanism operation
parameters. The control system 300 can additionally function to
process the detection and/or verification mechanism measurements to
extract plant parameters, such as the plant distance from the
detection mechanism 100, the plant size, the plant profile, the
plant junction 60 with the substrate 70, the plant color, the plant
orientation, the plant electrical conductivity, the plant
composition, the plant emissions (e.g., volatile organic compound
emissions), the plant nutrient status, the presence or absence of
disease symptoms, the presence, absence and/or quantification of
pests (e.g. insects), any other suitable plant parameter indicative
of plant health, or any other suitable plant parameter. The control
system 300 can additionally function to process the detection
mechanism measurements to extract ambient environment parameters,
such as incident light (e.g., wherein the detection mechanism 100
is a light sensor), wind speed, temperature, humidity, soil
conductivity, or any other suitable ambient environmental
parameter. The control system 300 can additionally function to
communicate (e.g., send and/or receive data to and/or from) a
remote computing device, such as a mobile device, server system, or
any other suitable device. The control system 300 is preferably a
computing system including one or more PCBs, but can alternatively
be any other suitable control system. The control system 300 is
preferably electrically connected to the detection mechanism 100
and/or verification mechanism 500, wherein the control system 300
receives measurements from the detection mechanism 100 and/or
verification mechanism 500. The control system 300 can additionally
send control information (e.g., focusing information, filtering
information, actuation information, etc.) to the detection and/or
verification mechanism. The control system 300 is preferably
electrically connected to the treatment mechanism 200, wherein the
control system 300 can send control information to the treatment
mechanism 200. The control system 300 can additionally receive the
actual treatment mechanism operation parameters from the treatment
mechanism 200 concurrently or after treatment mechanism operation.
However, the control system 300 can control and/or receive
information from any other suitable system component.
[0052] The control system 300 can additionally include digital
memory, which functions to transiently or permanently retain
settings, measurements, or any other suitable data. The digital
memory is preferably flash memory, but can alternatively or
additionally be RAM or any other suitable memory.
[0053] The system 10 can additionally include a mounting mechanism
400 that functions to provide a mounting point for the system
components. In one example, as shown in FIGS. 2A and 2B, the
mounting mechanism 400 (support structure) statically retains the
positions of the detection mechanism 100, the treatment mechanism
200, and the verification mechanism 500 relative to a longitudinal
axis of the mounting mechanism 400. The mounting mechanism 400 is
preferably a chassis or frame, but can alternatively be any other
suitable mounting mechanism. The mounting mechanism 400 preferably
includes a first set of coaxial wheels, each wheel of the set
arranged along an opposing side of the mounting mechanism 400, and
can additionally include a second set of coaxial wheels, wherein
the rotational axis of the second set of wheels is preferably
parallel the rotational axis of the first set of wheels. However,
the mounting mechanism 400 can include any suitable number of
wheels in any suitable configuration. The mounting mechanism 400
preferably includes a coupling mechanism 402, such as a hitch, that
functions to removably or statically couple to a drive mechanism,
such as a tractor, more preferably to the rear of the drive
mechanism (such that the system 10 is dragged behind the drive
mechanism), but alternatively the front of the drive mechanism or
to the side of the drive mechanism. Alternatively, the mounting
mechanism 400 can include the drive mechanism (e.g., a motor and
drive train coupled to the first and/or second set of wheels). The
detection mechanism 100 is preferably mounted to the mounting
mechanism 400, such that the detection mechanism 100 traverses over
a geographic location before the treatment mechanism 200 traverses
over the geographic location. In one variation of the system 10,
the detection mechanism 100 is statically mounted to the mounting
mechanism 400 proximal the coupling mechanism and the treatment
mechanism 200 is mounted to the mounting mechanism 400 distal the
coupling mechanism, with the detection mechanism 100 arranged
therebetween. In variants including a verification mechanism 500,
the verification mechanism 500 is preferably arranged distal the
detection mechanism 100, with the treatment mechanism 200 arranged
therebetween, such that the verification mechanism 500 traverses
over the geographic location after treatment mechanism traversal.
However, the mounting mechanism 400 can retain the relative
positions of the system components in any other suitable
configuration.
[0054] The system 10 can additionally include a verification
mechanism 500 that functions to record a measurement of the ambient
environment of the system 10, which is used to verify or determine
the extent of plant treatment. The verification mechanism 500
preferably records a measurement of the geographic area previously
measured by the detection mechanism 100. More preferably, the
verification mechanism 500 records a measurement of the geographic
region encompassing the plant treated by the treatment mechanism
200. The verification mechanism measurement can additionally be
used to empirically determine (e.g., calibrate) treatment mechanism
operation parameters to obtain the desired treatment effect. The
verification mechanism 500 can be substantially similar (e.g., be
the same type of mechanism as) the detection mechanism 100, or be
different from the detection mechanism 100. The verification
mechanism 500 can be a multispectral camera, a stereocamera, a CCD
camera, a single lens camera, hyperspectral imaging system, LIDAR
system (light detection and ranging system), dyanmometer, IR
camera, thermal camera, humidity sensor, light sensor, temperature
sensor, or any other suitable sensor. In one variation, the
verification mechanism 500 measures plant position, wherein
comparison between the plant position as measured by the detection
mechanism 100 and the verification mechanism 50o enables
determination of plant dislodgement. In another variation, the
verification mechanism 500 measures plant color, wherein comparison
between the plant color as measured by the detection mechanism 100
and the verification mechanism 500 enables determination of plant
cauterization. In another variation, the verification mechanism 50o
measures an amount of dye color, wherein the dye is included in the
working fluid. However, the verification mechanism 500 can be used
to measure any other suitable parameter indicative of plant
treatment. The verification mechanism 500 is preferably arranged at
the same angle as the detection mechanism 100, but can
alternatively be arranged at a different angle (e.g., at an angle
between a gravity vector or a 90 degree angle to the substrate
plane and a vector perpendicular to the gravity vector or parallel
to the substrate plane).
[0055] The system 10 can additionally include a power source, which
functions to power the system components, including the detection
mechanism 100, control system 300, and treatment mechanism 200. The
power source can be mounted to the mounting mechanism 400, can be
removably coupled to the mounting mechanism 400, or can be separate
from the system (e.g., located on the drive mechanism). The power
source can be a rechargeable power source (e.g., a set of
rechargeable batteries), an energy harvesting power source (e.g., a
solar system), a fuel consuming power source (e.g., a set of fuel
cells or an internal combustion system), or any other suitable
power source.
[0056] The system 10 can additionally include a communication
apparatus, which functions to communicate (e.g., send and/or
receive) data between the control system 300 and a set of remote
devices. The communication apparatus can be a WiFi communication
system, a cellular communication system, a short-range
communication system (e.g., Bluetooth, NFC, etc.), or any other
suitable communication system.
2. Method
[0057] As shown in FIG. 14, the method for plant treatment includes
identifying a plant within a geographic area S100, identifying a
plant feature for use in treatment application S200, determining a
set of operation parameters for a treatment mechanism S300, and
operating the treatment mechanism in the treatment mode S400. The
method functions to provide treatment on a plant-by-plant basis.
However, the method can function to provide treatment to set of
plants (e.g., a set of plants located within a loft by loft area)
or to any suitable number of plants. The method can additionally
function to optimize plant treatment across a geographical area
(e.g., a plant field) including a set of plants (e.g., one or more
plants) to optimize a geographic area output parameter, such as
crop yield or any other suitable geographic area output parameter
as discussed above, an example of which is shown in FIG. 15.
[0058] The method is preferably performed by the system 10
described above, more preferably by the control system 300
controlling the system described above, but can alternatively be
performed by a remote computing system (e.g., a mobile device of a
user, a remote server system, etc.), or performed by any other
suitable computing system. For the purposes of the below
description, determining a variable or parameter based on a
reference variable or parameter can include calculating, selecting
(e.g., from a graph or chart), estimating, iteratively converging,
or otherwise determining the variable or parameter using the
reference variable or parameter.
[0059] Identifying a plant within a geographic area S100 functions
to identify a subject for treatment. The plant is preferably
identified in-situ within the geographic area, wherein the plant
remains rooted to the ground during plant identification and
treatment initiation. As discussed above, the plant is preferably
rooted in a field, but can alternatively be rooted in a pot or any
other suitable location. Identifying the plant can include
receiving a first measurement for a geographic area from a sensor
as the sensor translates within the geographic area and identifying
a plant based on the first measurement. The sensor is preferably
the detection mechanism 100, but can alternatively be any other
suitable sensor. The sensor preferably translates as part of the
system, wherein the system can be passively driven or actively
driven, but can alternatively translate in any other suitable
manner. The first measurement is preferably captured by the sensor,
but can alternatively be received by the sensor (and transmitted
from a second source), or otherwise obtained by the sensor. The
sensor preferably captures a series of measurements at a
predetermined frequency during sensor translation, wherein each
measurement is subsequently analyzed for a plant, but can
alternatively capture measurements in response to trigger events,
such as a change in an environmental parameter (e.g., a light
change). The first measurement is preferably an optical image, but
can alternatively be an acoustic measurement, a haptic measurement,
a temperature measurement, an electric measurement (e.g.,
conductance), a compound measurement, a wind speed measurement, a
light measurement, or any other suitable measurement. The optical
image preferably includes both the substrate 70 (e.g., soil, ground
plane) and the plant. The optical image can be captured from the
top of the plant (e.g., with a field of view substantially
perpendicular a gravity vector or parallel a substrate plane,
within a margin of error), the side of the plant (e.g., with a
field of view substantially parallel a gravity vector or
perpendicular a substrate plane, within a margin of error), at an
angle between the top and side of the plant, toward the substrate
70, or at any other suitable angle. The optical image can be a
single image, a first and second image concurrently captured by a
first and second statically coupled sensor (e.g., a stereoview
captured with a stereocamera), a multispectral image, a
hyperspectral image, a reflected pattern of light (e.g., as in
LIDAR), or any other suitable optical image. One or more optical
images of the same geographic area can be captured by one or more
sensors, concurrently or asynchronously.
[0060] Identifying a plant based on the first measurement
preferably includes identifying the plant within the image, but can
alternatively include identifying the plant based on a change in
the ambient environment (e.g., measured light) as the system moves
along the geographic area, or identified in any other suitable
manner. The plant is preferably identified using image processing
techniques, such as pixilation, linear filtering, principal
components analysis, independent component analysis, hidden Markov
models, anisotropic diffusion, partial differential equations,
self-organizing maps, neural networks, wavelets, convolutional
nets, histogram of gradient features, gradient features, general
Markov modeling (color), or any other suitable technique. The plant
can additionally or alternatively be identified using the system
and method described in U.S. application Ser. No. 13/788,320 filed
7 Mar. 2013, incorporated herein in its entirety. In one example,
identifying the plant preferably includes extracting the ground
plane from the optical image (e.g., based on color, planarity,
etc.), identifying a plant within the image using color and/or
shape analysis (e.g., identifying colors, such as green, that are
associated with plants and less associated with substrate 70). In
another example, identifying the plant includes applying background
segmentation to identify a plant in the foreground.
[0061] Identifying a plant feature for use in treatment application
S200 functions to identify a portion of the substrate 70 from which
a treatment position can be determined. The plant feature can be a
leaf or set of leaves, a stem, a node, a petiole, an apical bud, a
root structure, a shoot structure, a fruit, a fruit feature (e.g.,
corn silks), a junction 60 between the plant support structure
(e.g., stem) and the substrate 70 (ground plane) or junction 60
between the root structure and shoot structure, or any other
suitable portion of the plant. The plant feature can alternatively
or additionally be a plant characteristic or parameter, such as a
plant index value (e.g., NDVI, leaf area index, etc.), a color,
shape, location, or any other suitable characteristic. Plant
indices can include Normalized Difference Vegetation Index (NDVI),
Transformed Chlorophyll Absorption in Reflectance Index normalized
by Optimized Soil-Adjusted Vegetation Index (TCARI/OSAVI),
Normalized Difference Red Edge Index (NDRE), Canopy Chlorophyll
Content Index (CCCI), Photochemical Reflectance Index (PRI), crop
water stress index (CWSI), canopy temperature less air temperature
(Tc-Ta), stomatal conductance (G), stem water potential, water
stress, water content, Water Band Index (WBI), plant uniformity
across the geographic area, Leaf Area Index (LAI), Net Assimilation
Rate (NAR), Relative Growth Rate (RGR), Leaf Area Ratio (LAR), Leaf
Area Duration (LAD), Crop Growth Rate (CGR), plant index value
change over time, plant index value change rate, absolute growth
rate in volume, absolute growth rate in number, absolute growth
rate in mass, or any other suitable plant index. The plant feature
is preferably identified from the first measurement, more
preferably within the first optical image, but can alternatively be
identified from a second measurement of the same geographic area,
the same plant, or any other suitable measurement. The second
measurement can be the same type of measurement as the first
measurement, or can alternatively be a different type of
measurement. The plant feature is preferably identified using image
processing techniques, as discussed above, but can alternatively be
determined in any other suitable manner.
[0062] In one variation, identifying a plant feature for use in
treatment application S200 can include capturing an image of the
plant with a sensor and processing the image to identify the plant
feature. Capturing an image of the plant with a sensor can include
recording an image of the plant and the substrate 70, the image
including a vector oriented at an angle between a plane of the
substrate surface and a gravity vector, but can alternatively
include capturing the image of the plant in any other suitable
manner at any other suitable angle (e.g., as described above).
Processing the image to identify the plant feature can include
extracting a ground plane from the image, and identifying a plant
feature contiguous with or otherwise associated with a plant
proximal the sensor within the image.
[0063] Determining a treatment position functions to determine a
global position at which the treatment should be applied. The
treatment position can be a point, a line, or an area. The
treatment position can be a geographic position (e.g., set of
latitude and longitude coordinates, set of coordinates with
altitude, etc.), a relative position (e.g., relative to the plant,
relative to a plant feature or portion), or any other suitable
position. Examples of treatment positions include a position on the
substrate 70 relative to a stem junction with the substrate 70, an
interleaf position between a superior and inferior leaf (e.g., as
determined relative to a gravity vector), a position relative to
the plant feature (e.g., superior the plant feature along a gravity
vector, next to the plant feature, etc.) a position of a plant
feature, such as an apical bud, corn silk, node, or other feature,
a local minima or maxima of a plant parameter for a plant portion
(e.g., cross-sectional dimension of a plant stem), or any other
suitable treatment position. The treatment position is preferably
determined based on the treatment mechanism to be used, but can
alternatively be determined in any other suitable manner. A
location (position) can be a set of geographic coordinates (e.g.,
latitude and longitude), a place name (e.g., county, city,
landmark, intersection, etc.), a physical street address, distance
from a given location, presence within a specified radius from a
given location, a graphical depiction on a map, or any other
suitable location expression. The location can be determined based
on GPS coordinates provided by a device, triangulation between
mobile phone towers and public masts (e.g., assistive GPS), Wi-Fi
connection location, WHOIS performed on IP address or MAC address,
GSM/CDMA cell IDs, location information self-reported by a user, or
determined in any other suitable manner.
[0064] Determining the treatment position preferably includes
determining a position of the plant feature and determining the
treatment position based on the plant feature position. The plant
feature position can be a relative position (e.g., relative to a
system component, such as the sensor, treatment mechanism, etc.) or
a global position (e.g., absolute position). The plant feature
position is preferably determined based on the first measurement,
but can alternatively be determined based on a second measurement.
In one example, the plant feature distance from the system
component can be determined (e.g., estimated) from an image, based
on optical analyses techniques (e.g., LIDAR, stereoview analysis,
etc.). The global position of the sensor is approximated or known,
based on a position measurement from a positioning mechanism (e.g.,
GPS, triangulation system, etc.). The plant feature position is
determined based on a combination of the global position of the
system, the angle of the sensor relative to the direction of travel
(e.g., based on an accelerometer, GPS, etc.), and the estimated
distance of the plant feature from the system. In another example,
the plant feature or plant global position is known (e.g.,
determined during a prior treatment or measurement session),
wherein the plant can be uniquely identified, the respective global
position retrieved, and the treatment position determined based on
the retrieved global position. The plant can be uniquely identified
based on the estimated geographic position, a plant marker (e.g.,
an RFID tag), a plant variable (e.g., the lean of a stem, the
pattern of sunspots, the pattern of bug marks or bites, the pattern
of surrounding plants, etc.), or based on any other suitable
identifier or combination thereof, unique or non-unique. However,
the treatment position can be otherwise determined.
[0065] Determining the treatment position can additionally or
alternatively include determining the position of the treatment
mechanism relative to the treatment position. More preferably, the
position of the treatment mechanism active area (e.g., area to
which the treatment can be applied) relative to the treatment
position is determined. The position is preferably an instantaneous
position, but can alternatively be an estimated position or any
other suitable position. This position is preferably the geographic
distance between the treatment mechanism and the treatment
position, but can alternatively be a height differential or any
other suitable position. This position can subsequently be used to
determine an amount of time between an instantaneous time and the
time at which the treatment mechanism is to be operated in the
treatment mode (e.g., treatment initiation time). Determining the
position of the treatment mechanism relative to the treatment
position preferably includes determining the treatment position
relative to the plant feature, and determining the active area
position relative to the treatment position. However, the active
area position relative to the treatment position can alternatively
be determined without determining the treatment position relative
to the plant feature (e.g., wherein the treatment position is
determined relative to the system position). Determining the active
area position relative to the treatment position preferably
includes determining a first distance between the treatment
position and a reference position (e.g., sensor position or
position mechanism position) and determining the active area
position relative to the treatment position based on the first
distance and a known distance between the reference position and
the active area position. However, the active area position
relative to the treatment position can be otherwise determined.
[0066] Determining a set of operation parameters for a treatment
mechanism S300 (treatment mechanism operation parameters) functions
to determine operation parameters that will achieve a target plant
parameter value (target plant parameter, target effect on the
plant, desired effect). The target plant parameter value is
preferably determined (e.g., selected, computed, etc.) based on
optimization of a geographic area output parameter, wherein a plant
having the target plant parameter value preferably contributes to
geographic area output parameter optimization. However, the target
plant parameter value can be determined based on plant health,
plant proximity to adjacent plants, or based on any other suitable
plant parameter. The target plant parameter can be plant viability,
plant health, available water volume, growth regulator
concentration, electric stimulation, available light, available
chemical compound, or any other suitable target plant parameter.
Example values of plant viability include plant necrosis and plant
retention. Example values of plant health include plant growth
stimulation or retardation.
[0067] The set of treatment mechanism operation parameters can be
determined based on a reference value, but can alternatively be
determined in any other suitable manner. The reference value can be
a substantially instantaneous plant measurement, a historical
measurement for the plant (historical plant parameter measurement),
a substantially instantaneous measurement for the geographic area
(e.g., ambient environment parameter), a historical measurement for
the geographic area, an anticipated effect of applying the
treatment using the operation parameters on a second plant located
within the geographic area (e.g., as described below), a plant
classification (e.g., plant type, plant maturity, etc.),
classifiers or any other suitable parameter for the plant or set of
plants determined from historical measurements, or be any other
suitable measurement. The substantially instantaneous measurement
can be the first measurement, or be a second measurement for the
plant recorded within a predetermined time window, such as within
several seconds or several minutes. However, the treatment
mechanism operation parameters can be selected based on system
parameters or characteristics, or based on any other suitable
parameter. For example, the shutoff event for a spray mechanism can
be determined based on the amount of anticipated, historical, or
otherwise determined overspray (e.g., due to solenoid closure
delay). However, the treatment mechanism operation parameters can
be otherwise determined.
[0068] The set of treatment mechanism operation parameters can be a
parameter of a treatment mechanism output, a parameter of a
treatment mechanism input, or any other suitable operational
parameter. Examples of treatment mechanism operation parameters
include a treatment initiation position (e.g., a geographic
location at which the treatment is to begin), the treatment
position (e.g., geographic location, height relative to the
substrate 70, angle relative to an axis of the support mechanism,
etc.), a treatment initiation time (e.g., an absolute timestamp or
relative time point at which the treatment is to begin), power
input or output settings (e.g., wattage, electric voltage, electric
current, etc.), output pressure, flow rate, working fluid
composition, spray profile, plant coupling force, or any other
suitable operational parameter.
[0069] Determining the set of treatment mechanism operation
parameters can include selecting the treatment mechanism operation
parameters from a predetermined chart or grid based on the
reference value(s), calculating the treatment mechanism operation
parameters using the reference value(s), empirically determining
the treatment mechanism operation parameters, iteratively analyzing
different sets of treatment mechanism operation parameters until a
set of parameters anticipated to result in the target effects for
the plant and/or secondary plants is achieved, or determined in any
other suitable manner. Empirically determining the treatment
mechanism operation parameters can include selecting a first set of
treatment mechanism operation parameters, treating a first plant by
operating the treatment mechanism based on the first set of
treatment mechanism operation parameters, receiving a second
measurement of the treated plant, analyzing the second measurement
for treatment efficacy (e.g., whether a target plant parameter
value has been achieved, whether the plant has been necrosed,
whether a fluid treatment has been applied, the degree of treatment
application, etc.), and selecting a second set of treatment
mechanism operation parameters or generating a second set of
treatment mechanism operation parameters based on the first set of
treatment mechanism operation parameters. Iteratively analyzing
different sets of treatment mechanism operation parameters can
include selecting a first set of treatment mechanism operation
parameters, estimating a first effect of a treatment applied by the
treatment mechanism operating based on the first set of treatment
mechanism operation parameters on the plant and/or secondary
plants, selecting a second set of treatment mechanism operation
parameters, estimating a second effect of the treatment applied by
the treatment mechanism operating based on the second set of
treatment mechanism operation parameters on the plant and/or
secondary plants, comparing the first and second effects for
proximity to the target plant parameter value for the plant and/or
secondary plants, and selecting the set of treatment mechanism
operation parameters estimated to result in the effect closest to
the target plant parameter.
[0070] Operating the treatment mechanism in the treatment mode S400
functions to control the treatment mechanism to apply the treatment
to the treatment position to treat the plant. The treatment
mechanism is preferably operable between a treatment mode and a
standby mode, but can additionally or alternatively be operable in
any other suitable mode. Operating the treatment mechanism in the
treatment mode S400 preferably includes operating the treatment
mechanism based on the set of operation parameters (e.g., within a
margin of error, such as 5%, 2%, etc.). The treatment mechanism is
preferably operated in the treatment mode in response to the
occurrence of a treatment initiation event, but can alternatively
be operated in response to any other suitable condition being
satisfied. Examples of treatment initiation events include
satisfaction of an operation parameter, satisfaction of the initial
treatment parameter (e.g., identifying the plant from the first
measurement, the position of the active area of the treatment
mechanism substantially meeting the plant position, etc.), the
active area of the treatment mechanism substantially aligning with
a treatment position, an instantaneous global timestamp
substantially meeting a treatment initiation timestamp, an
estimated duration until the treatment mechanism will align with a
plant feature substantially meeting a treatment duration, or any
other suitable treatment event.
[0071] Operating the treatment mechanism based on the set of
operation parameters can include controlling the treatment
mechanism to output a treatment substantially satisfying (e.g.,
within a margin of error) the set of treatment parameters, but can
alternatively include operating the treatment mechanism with a set
of inputs substantially satisfying the set of treatment parameters
or operating the treatment mechanism in any other suitable manner.
Operating the treatment mechanism in the standby mode preferably
includes sealing or halting material input to the treatment
mechanism (e.g., halting power provision, fluid provision, etc.),
but can alternatively include any other suitable method of ceasing,
halting, or pausing treatment application.
[0072] Operating the treatment mechanism in the treatment mode S400
can additionally include aligning the treatment mechanism active
area with the treatment position. In a first variation, aligning
the treatment mechanism active area with the treatment position
includes actuating the treatment mechanism to align the active area
with the treatment position. In one example, aligning the active
area with the treatment position includes actuating the application
mechanism (e.g., a conductive wire or plate pair of an electrical
discharge device) such that the application mechanism is
substantially aligned with the treatment position(s) (e.g., within
a margin of error). In this example, the treatment mechanism can
additionally include an actuation mechanism, such as a linear
element (e.g., a screw or telescoping element) that increases the
distance of the active area from the mounting mechanism, a
rotational element that permits angular actuation about a
rotational axis, or any other suitable actuation element. In a
second variation, the treatment mechanism active area can be
passively aligned, wherein aligning the treatment mechanism active
area with the treatment position can include moving the entire
system such that the treatment position is in range of the active
area or the active area is aligned with the treatment position. For
example, as shown in FIG. 17B, system traversal along the
geographic area can align the active area with the treatment
position as the system travel path 80 passes by the treatment
position. However, any other suitable alignment method or
combination thereof can be used to align the active area with the
treatment position.
[0073] The method can additionally include determining a treatment
for the plant S500, which functions to determine an action that
will result in the desired effect on the plant (e.g., result in the
target plant parameter values). Example treatments include:
dislodging the plant from the supporting substrate S110, removing a
plant portion from the plant, cauterizing the plant or a portion
thereof (e.g., by application of a first amount of electric
discharge or heat) S120, stimulating plant growth with application
of a second amount of electric discharge, regulating plant growth
with application of a first amount or concentration of growth
regulator (e.g., retardant, hormone, fertilizer, etc.), necrosing
the plant with application of a second amount or concentration of
growth hormone or fertilizer, necrosing the plant by application of
a first amount of heat, necrosing the plant by removal of a first
amount of heat, necrosing the plant by removal of an ambient
environment parameter (e.g., air, water, sunlight, etc.), retarding
plant growth, or any other suitable treatment. Selecting an action
for a plant can include selecting nutrient application,
disease-inducing or disease-prevention compound application,
pesticide application, insecticide application, fungicide
application, defoliant application, or application of any other
suitable compound or treatment to an individual plant within a
plant field. Selecting the action can additionally include
selecting the amount of the compound (e.g., volume, concentration,
duration, etc.) to apply to the plant. Alternatively, selecting an
action for a plant can include selecting an action for the plant
ambient environment, such as irrigating the plants on a
plant-by-plant basis. Selecting an action for the plant can
additionally include selecting how the plant environment should be
changed, such as selecting and/or controlling the operation of
individual pipelines or driplines remote from the system,
determining how deep or wide of an individual irrigation ditch
should be created, based on the plant characteristics, the plant
ambient environment parameters, and/or the characteristics of the
neighboring plants. Alternatively, any other suitable action can be
selected for the identified plant.
[0074] The treatment for the plant is preferably determined based
on optimization of the geographic area output parameter S520, as
shown in FIG. 17A. The geographic area output parameter can be
optimized by maximizing, minimizing, or otherwise optimizing the
resultant geographic area output parameter value. The treatment is
preferably selected to promote optimization of the geographic area
output parameter, and does not necessarily result in the optimal
geographic area output parameter value. Geographic area output
parameter optimization is preferably not true optimization, and the
method can result in a sub-optimal geographic area output parameter
value after treatment. Instead, the optimization preferably
promotes the best, second best, or any other suitable usage of the
geographic area resources. The geographic area output parameter is
preferably optimized based on information of the geographic area
(e.g., information for plants previously treated within the
geographic area) at the time of decision computation, such that the
geographic area output parameter optimization for a given plant is
unaffected by the actual parameters of plants within the geographic
area that are subsequently treated. However, the geographic area
output parameter optimization can be a true optimization, wherein
the most effective plant output parameters are selected and
achieved through treatment.
[0075] The geographic area output parameter is preferably an output
parameter for the entirety of the geographic area, but can
alternatively be an output parameter for each individual plant, or
be any other suitable output parameter. Examples of geographic area
output parameters include weed concentration, weed number, weed
viability, crop yield, crop uniformity (e.g., in size, color,
blemishes, etc.), compound amount (e.g., the mass of sugar that can
be harvested from the geographic area), compound concentration per
plant, crop concentration per plant, total monetary cost (e.g.,
minimizing an input cost to produce a desired output), or any other
suitable output parameter. The target plant parameter values are
preferably adjusted to optimize the geographic area output
parameter. Target plant parameters include plant health (e.g.,
necrosed or retained), plant yield, the anticipated and/or
instantaneous degree of plant crowding, plant size, plant color,
plant emissions, plant chemical composition, or any other suitable
plant output parameter.
[0076] The treatment can be determined based on a substantially
instantaneous measurement for the plant, recorded within a
threshold time period of the instantaneous time (e.g., within
several second, microseconds, etc.). More preferably, the treatment
can be determined based on plant parameters determined (e.g.,
calculated, extracted, etc.) from the measurement. The measurement
can be the first measurement, or the measurement from which the
plant was identified, or can be a different measurement. Plant
parameters that can be used in treatment determination include
parameters indicative of plant health, such as plant color
intensity, plant color hue, color ratio, plant size, plant
uniformity (e.g., leaf distribution, stem lean, etc.), plant
composition, plant emissions, plant feature (e.g., stomata) size,
plant feature distribution over the plant, plant feature
distribution over a portion of the plant (e.g., over a leaf), plant
feature state (e.g., degree of stomatal opening), or any other
suitable parameter. The treatment can additionally or alternatively
be selected based on desirable or undesirable phenotypic
expressions or physical characteristics. For example, a lettuce
plant with spotted leaves can be selected for necrosis, while a
lettuce plant with a spot density less than a predetermined density
threshold can be selected for retention.
[0077] The treatment can additionally or alternatively be
determined based on a current parameter value for the geographic
area, wherein the parameter values are determined (e.g., recorded,
gathered, estimated, etc.) within a threshold time period or within
a time window. The time window can be the time of same session
operation (e.g., wherein the time window is the duration of
continuous system operation), a time window defined before a
measurement for a subsequent plant is received, be a predetermined
duration after identification of a previous plant, be a duration
determined based on the system velocity, or be any other suitable
time window. The geographic area parameter values can be determined
by the system, determined by a secondary system (e.g., a weather
system, an aerial system, etc.), estimated based on a previous
treatment or monitoring session, determined by a secondary system
(e.g., an airborne system, such as satellite or drone system),
determined by a remote system (e.g., a weather report), or
determined by any other suitable system in any other suitable
manner. The parameter values for the geographic area can include a
number of plants within the geographic area, the placement of
plants within the geographic area, ambient environment parameters
for the geographic area (e.g., sun exposure, wind speed, humidity,
temperature, soil conductivity, soil saturation, soil composition,
etc.), or values for any other suitable parameter.
[0078] The treatment can alternatively or additionally be
determined based on historical treatment applications to the
geographic area. The treatment can alternatively or additionally be
determined based on historical treatment applications to the plant.
The historical treatment applications can be treatments applied
within a predetermined time window of the instantaneous time,
outside of a predetermined time window, or applied at any other
suitable time. The historical parameter values for the geographic
area can include parameter values of secondary plants 20 within the
geographic area that were previously treated during the same
operation session of the system (e.g., within the time window of
the instantaneous time). The historical parameter values for the
geographic area can additionally or alternatively include the
parameter values of all or a portion of the plants within the
geographic area from a prior operation session of the system. The
parameters for the geographic area, secondary plant 50, and/or the
plant are preferably similar to those parameters as discussed
above, but can alternatively be different parameters, such as
trends. Examples of historical parameters include historical
treatments. Such treatments can include treatments directly applied
to each plant within the same treatment session or in a prior
treatment session. Such treatments can include treatments
indirectly applied to each plant or set of plants (e.g., due to
treatment runoff or carryover), within the same treatment session,
in a prior treatment session, or from treatment of an adjacent or
proximal field. Determining the amount of indirect treatment
applied to a plant can be based on: a set of prior operation
parameters for treatment of a second plant within the geographic
area at a prior time point, the prior time point within a threshold
time period of an instantaneous time; and an ambient environmental
parameter for the prior time point (e.g., as determined from
historical weather measurements). Such treatments can include
treatments applied to the geographic area, or portion thereof, as a
whole (e.g., a crop dusting treatment). Such treatments can include
past weather events associated with the geographic area, such as
rain, thunder, and sunlight. However, any other suitable historical
information can be used. The historical information is preferably
retrieved from memory, such as on-board memory, a remote server
system, or any other suitable memory, but can be received (e.g.,
from the remote server system, the plant, or any other suitable
source) or otherwise obtained.
[0079] The treatment can additionally or alternatively be
determined based on the anticipated effect of the treatment on
secondary plants 50 (e.g., indirect treatments), as discussed
below.
[0080] In a first variation of treatment determination, the
treatment for each plant of the geographic area can be
predetermined prior to receipt of the first measurement for a first
plant of the geographic area or initiation of a treatment session
for the geographic area. This variation preferably includes
retrieving historical information for each plant (e.g., plant
parameter values) within the geographic area from a database,
determining the treatment for each plant based on the historical
information, and treating each plant according to the respective
treatment in response to the system encountering the plant within
the geographic area. Alternatively or additionally, this variation
can be performed using future information for each plant or the
geographic area, wherein the future information (e.g., future
treatments, etc.) can be determined based on historical
information, estimated, or otherwise determined. This variation is
preferably performed separately (e.g., asynchronously) with
treatment of plants within the geographic area, but can
alternatively be performed concurrently with treatment of plants
within the geographic area.
[0081] In a second variation of treatment determination, the
treatment for each plant of the geographic area can be
predetermined prior to receipt of the first measurement for the
respective plant. More preferably, the treatment for each plant can
be determined during treatment of secondary plants 50 within the
geographic area, or determined during the treatment session for the
geographic area (e.g., within a time window prior to the time at
which the plant is treated, wherein the time window can be
predetermined, be a duration of continuous system operation, or be
any other suitable time window), after treatment of the secondary
plant 50. However, the treatment can be determined at any other
suitable time. In this variation, the treatment for the plant is
preferably determined based on the treatment of and/or anticipated
treatment effect for a secondary plant 50, wherein the decision of
whether to necrose S521, retain S522, and/or stimulate growth of
the secondary plant 50 affects the treatment that is selected for
the plant. The secondary plant treatment (actual or estimated) or
secondary plant treatment decision preferably affects the treatment
decision for the first plant through the geographic area output
parameter optimization, but can alternatively influence the
treatment decision for the first plant in any other suitable
manner. The treatment decision for the first plant is preferably
dynamically adjusted in response to treatment of the secondary
plant 50, but can alternatively be determined in any other suitable
manner. The treatment decision for the first plant can additionally
be determined based on historical parameters or on any other
suitable reference value. In one example, a first plant can be
assigned to be necrosed, but as the system monitors and treats the
secondary plants within the geographic area, the first plant can be
reassigned to be retained (e.g., in response to overtreatment, such
as overfertilization, of a secondary plants that were meant to be
retained).
[0082] In a third variation of treatment determination, the
treatment for each plant of the geographic area can be dynamically
determined, in response to identification of the plant within the
geographic area. In this variation, the treatment for each plant
can be determined based on the historical parameter values for the
geographic area. The treatment for each plant can additionally or
alternatively be based on a substantially instantaneous measurement
for the plant for which a treatment is to be determined, wherein
the measurement is preferably recorded and/or received within a
second time window. The treatment for each plant can additionally
or alternatively be determined based on the treatments applied to
and/or anticipated treatment effects on secondary plants 50 within
the geographic area within the same session. The treatment for each
plant can additionally or alternatively be determined based on an
anticipated effect of the treatment applied to the secondary plant
50 on the plant to be treated (primary plant 40). The treatment can
additionally or alternatively be selected based on any other
suitable information. For example, in response to identification of
a plant, the system determines whether to retain, necrose, or
stimulate the plant based on the following factors: the treatments
previously applied to secondary plants within the geographic area
during the same session and the estimated or confirmed treatment
effects on the secondary plants; the estimated viability of the
plant based on the estimated plant health (e.g., as determined
based on the ratio of green to brown in an optical image), the
forecasted weather, the prior treatments applied to the plant by
systems or the environment, and the effect that a treatment can
have on the plant; the interaction of the necrosed, retained, or
stimulated plant on neighboring plants, and/or any other suitable
factors. In particular, the factors can be used to determine which
course of action would optimize the geographic area output
parameter. However, the treatment can be determined in any other
suitable manner.
[0083] Determining the treatment and/or determining the treatment
operation parameters can additionally include selecting a treatment
mechanism Shoo. This can be desirable when the system includes
multiple treatment mechanisms, of the same type or different types.
The treatment mechanism is preferably selected based on a
prediction of the future location of the plant relative to a given
treatment mechanism, based on the location of the plant and the
location, direction of travel, velocity, and/or acceleration of the
system. The selected treatment mechanism 201 is preferably the
treatment mechanism that is anticipated to be closest to the plant
or anticipated to have the best application angle for the plant, as
shown in FIG. 16A. For example, in a system having multiple
treatment mechanisms of the same type (e.g., all nozzles) fixedly
arranged in a row perpendicular to a direction of travel, a
treatment mechanism on the left can be selected to act on a plant
to the left of the system, while a treatment mechanism on the right
of the system can be selected to act on a plant to the right of the
system. In another example, the treatment mechanisms can be
arranged such that the treatment mechanisms apply the treatment at
a low angle relative to a normal vector relative to the ground
(e.g., less than 90.degree. from the ground, less than 60.degree.
from the ground, etc.) to apply the treatment to the stem, base, or
roots of the plant while avoiding the leaves. In this example, a
treatment mechanism on the right can be selected to act on a plant
to the left of the system, due to the improved angle of
application.
[0084] The treatment mechanism is additionally or alternatively
selected based on the state of operation of the treatment
mechanism. More preferably, the treatment mechanism is preferably
selected based on the amount of time required for the treatment
mechanism to achieve an active state and the amount of time before
the treatment mechanism is in a suitable position to apply a
treatment to the plant. Each treatment mechanism is preferably
operable between an active and inactive mode, and can additionally
be operable in a standby mode. Each treatment mechanism can
additionally require a period of time to ramp up to the active mode
from the inactive mode or the standby mode. For example, plasma
ionizers need time to charge the electrodes, spray nozzles need
time to pressurize and pump the spray fluid to the nozzle 211, and
RF cutters need time to heat. A treatment mechanism is preferably
selected when the estimated amount of time required for the
treatment mechanism to be operable in the active mode is less than
or substantially equal to the estimated amount of time for the
treatment mechanism to reach a suitable treatment position for the
plant (e.g., reach the plant center, reach a distance that permits
clear treatment access to the stem, etc.). The estimated amount of
time required for the treatment mechanism to be operable in the
active mode is preferably a predetermined duration (e.g., set by
the manufacturer), but can alternatively be selected from a chart
or graph based on the operation history of the treatment mechanism,
environmental parameters (e.g., moisture, wind, temperature, etc.),
or any other suitable variable that may influence the treatment
mechanism ramp up time. In another alternative, the estimated ramp
up time can be determined empirically. The ramp up time for a given
treatment mechanism can be measured during operation (e.g., with a
timer), wherein the estimated ramp up time for subsequent treatment
mechanism operations is set to the measured ramp up time.
[0085] Alternatively, when a system includes multiple treatment
mechanisms that apply different types of treatments, the treatment
mechanism is additionally or alternatively selected based on the
treatment mechanism efficacy in achieving the desired plant
response, as shown in FIG. 16B. The treatment mechanism is
preferably selected based on the plant type or plant
characteristics, but can alternatively be selected based on other
factors. More preferably, treatment mechanisms with treatments
having high efficacies in achieving the desired plant response for
the identified plant characteristics are selected. For example,
electric cauterization can be selected to necrose free-standing
plants (e.g., plants that are not contiguous or touching an
adjacent plant), while fertilizer spray can be selected to necrose
close-growing plants. Alternatively, treatment mechanisms having
lower efficacies in achieving the desired plant response can be
selected, particularly when the treatment mechanism has a higher
accuracy, or when the treatment mechanism has a higher coverage
area and multiple plants in close proximity are to be acted upon in
the same manner.
[0086] The treatment mechanism can additionally or alternatively
selected based on the cost of achieving the desired plant response
with the treatment mechanism. The cost of achieving the desired
plant response is preferably determined based on the cost of the
treatment amount required to achieve the desired response. In one
variation of the method, the treatment mechanism is selected based
on the market cost of the treatment material. The treatment
mechanism can be selected based on the dynamically shifting market
price of the treatment material, wherein the system is preferably
networked to a dynamically updated marketplace. Alternatively, the
market cost of the treatment material can be entered prior to
system operation, can be determined based on the cost of fuel (to
transport the system), or be determined in any other suitable
manner. For example, electric cauterization can be selected in
response to the cost of fertilizer spray exceeding the cost of
electricity required to power the electric cauterization
mechanism.
[0087] The treatment mechanism can additionally or alternatively
selected based on a desired resultant growing environment for the
retained crops. The treatment mechanism can be selected based on
the desired resultant soil composition, pest control, or based on
any other suitable environmental factor. This can be preferable
when a system includes multiple treatment mechanism types whose
treatments each leave a different treatment product. For example,
in order to achieve plant necrosis, a high fertilizer concentration
must be applied to the plant. This leaves the area occupied by the
plant and the surrounding area highly fertilized, which can be
conducive to growth of certain plants and prohibitive to growth of
other plants. In this example, fertilizer can be selected as a
necrosing agent when plants promoted by extremely fertilized land
are desired. In another example, the treatment products of electric
cauterization include ash and decaying plant matter, which can be
used as soil amendment to adjust the chemical and physical
properties of the soil. This can result in more favorable growing
conditions for the retained plants.
[0088] The treatment mechanism can additionally or alternatively
selected based on environmental parameters of the ambient
environment. This can be preferable when treatment application can
be affected by environmental factors such as wind 12 or humidity.
Selecting the treatment mechanism based on environmental parameters
preferably includes measuring a parameter of the ambient
environment with a sensor and selecting the treatment mechanism
based on the measurement. Selecting the treatment mechanism can
additionally include selecting a second treatment mechanism, having
a different treatment type than the first treatment mechanism, in
response to a change in the measured parameter. However, the
treatment mechanism can be selected in any other suitable
manner.
[0089] In one variation of the method, the treatment mechanism is
selected based on a weighted average of the aforementioned factors.
A weighted average is preferably calculated for each treatment
mechanism, wherein the treatment mechanism with the highest score
can be selected. The weights for the factors can be manually or
automatically adjusted. The weights can be automatically adjusted
based on the duration of system operation, environmental parameter
measurements (e.g., one factor is given more weight in response to
an environmental parameter measurement exceeding a predetermined
threshold), treatment material levels within the system,
availability of the treatment mechanism, or based on any other
suitable adjustment factor. The weighted average is preferably
determined from scores assigned to each factor for the given
treatment mechanism. The scores are preferably ranks, but can
alternatively be any other suitably determined score.
[0090] The method can additionally include verifying plant
treatment S700, which functions to determine the treatment that was
actually applied to the plant. Verifying plant treatment S700 can
additionally function to determine the effect of the applied
treatment on the plant. Verifying the plant treatment can include
recording a second measurement of the geographic area S710, more
preferably a second measurement of the plant or plant portion,
after treatment mechanism operation in the treatment mode and/or
after treatment application to the plant; determining a
verification indicator value based on the second measurement; and
comparing the determined verification indicator value to a
reference indicator value indicative of effective treatment.
Verifying plant treatment S700 can additionally include storing the
second measurement, verification indicator value, or any other
suitable verification information in association with a plant
identifier S720.
[0091] The second measurement can be the same type of measurement
as the first measurement, but can alternatively be a different
measurement type. In one example, recording the second measurement
includes recording an optical image of the plant after treatment
mechanism operation in the treatment mode. In another example, the
second measurement can be a single image captured by a CCD camera.
The second measurement can be taken at the same angle relative to a
reference point (e.g., gravity vector, plant, travel vector, etc.)
as the first measurement, or can be taken at a different angle. In
one example, the first measurement is taken at a non-zero angle
(e.g., between 0 and 90 degrees) to a gravity vector, while the
second measurement is taken from the top of the plant. The second
measurement is preferably recorded by a second sensor, such as a
second camera, wherein the second camera can be statically retained
relative to the treatment mechanism, more preferably at a position
opposing the first camera across the treatment mechanism (e.g.,
posterior the direction of system travel).
[0092] Determining the verification indicator value based on the
second measurement preferably includes extracting a value for the
verification parameter from the second measurement, such as by
using image processing techniques, signal processing techniques, or
any other suitable techniques.
[0093] In one example of the method, the treatment is plant
dislodgement. Determining the verification indicator value includes
analyzing the second measurement to extract plant dislodgement or
displacement indicators. Plant dislodgement or displacement
indicators include plant features superior a substrate plane (e.g.,
to extract plant features above the substrate 70 or exposed from
the substrate 70), or any other suitable indicators. The treatment
can be verified in response to determination of exposed roots,
determination that less than a threshold percentage or number of
roots are left in the undisturbed or retained substrate 70,
determination that a predetermined substrate mass has been
displaced, or determination of any other suitable indication of
plant displacement. The indicator values are preferably
measurements for the displacement indicators, but can alternatively
be any other suitable measure. Displaced substrate and/or root
exposure can be identified in an optical image based on color,
profile, and object differentials between the second measurement
and the first measurement, detected colors, or any other suitable
parameter.
[0094] In a second example of the method, the treatment is plant
cauterization. Determining the verification indicator value
includes analyzing the second measurement for cauterization
indicators. Cauterization indicators can include color change
(e.g., difference between the first measurement and second
measurement), detected colors (e.g., brown or black on the
cauterized plant portion), detected color ratios (e.g., ratio of
brown to green), color or color ratio changes, detected plant
portion temperatures over a predetermined temperature threshold,
temperature change, plant structure (e.g., cellular structure or
external structure), plant structure change, the water content of
the plant portion, water content change, or any other suitable
parameter indicative of cauterization. The indicator values are
preferably measurements for the cauterization indicators (e.g., the
temperature of the plant, the percentage of a given hue, the
intensity of a given hue, etc.), but can alternatively be any other
suitable measure.
[0095] In a third example of the method, the treatment is working
fluid application (e.g., growth hormone application, growth
retardant application, etc.). Determining the verification
indicator value includes analyzing the second measurement for fluid
application indicators. Fluid application indicators can include
detecting dye colors in an optical image (e.g., wherein the working
fluid includes a colored, fluorescent, or other dye), detecting
fluid beads or pools on the plant portion, detecting a spray
blockage pattern or shadow on the substrate (e.g., substrate color
change), detecting an increase in humidity levels proximal the
plant portion, or detecting any other suitable parameter indicative
of fluid application to the plant portion. The indicator values are
preferably measurements for the fluid application indicators (e.g.,
humidity measurement, number of fluid beads, estimated volume of
fluid retained on the plant, etc.), but can alternatively be any
other suitable measure.
[0096] The reference indicator value can be predetermined,
dynamically determined (e.g., based on the dynamically determined
desired treatment effect on the plant), or otherwise determined. In
one variation, the reference indicator value is retrieved from
on-board or remote storage. The reference indicator values can be
binary (e.g., either the treatment was applied and/or effective or
was not), such as a threshold value. Alternatively or additionally,
the reference indicator values can be a set of values (e.g., a
plurality of values), wherein each value can be associated with a
percentage, degree, or other measure of treatment success,
efficiency, efficacy, or any other suitable measure of plant
treatment. Alternatively or additionally, the reference indicator
values can be a substantially continuous scale or be any other
suitable set of values.
[0097] Verifying plant treatment S700 can additionally include
adjusting the treatment mechanism operation parameters selected for
subsequent treatment events based on the verification indicator
value. This can function to provide feedback to the system to
titrate (e.g., incrementally adjust) which treatment mechanism
operation parameters are selected to obtain a desired result (e.g.,
target plant parameter). The future treatment mechanism operation
parameters can be adjusted based on the verification indicator
values extracted from the second measurement, or can be adjusted
based on the actual or anticipated treatment effect on the plant
based on the indicator values. The future treatment mechanism
operation parameters are preferably adjusted for treatment of
plants exhibiting similar parameters to the just-treated plant, but
can alternatively be adjusted for treatment of plants in ambient
environments having similar parameters as the ambient environment
of the just-treated plant, or adjusted for treatment of plants
based on any other suitable variable. The future treatment
mechanism operation parameters are preferably changed from the set
of treatment mechanism operation parameters selected for the
just-treated plant, but can alternatively be used to adjust a
formula, wherein the formula is subsequently used to determine the
treatment mechanism operation parameters, or used to adjust the
future selected treatment mechanism operation parameters in any
other suitable manner. The future treatment mechanism operation
parameters are preferably incrementally adjusted by a predetermined
increment in response to determination that the treatment effect
was not the desired effect, but the adjustment amount can
alternatively be determined based on the indicator value, the
difference between the determined indicator value and the reference
indicator value, the difference between the actual and desired
treatment effect, or determined in any other suitable manner.
[0098] In a first variation, the treatment is plant dislodgement,
preferably by high-pressure spray but alternatively by mechanical
digging or application of any other suitable dislodgement force. In
response to determination that the treatment was less effective
than desired (e.g., the percentage of the plant that was dislodged
is less than the percentage of the plant that was targeted to be
dislodged, roots were detected in the intact substrate when they
should have been removed, etc.), for a second plant having plant
parameters similar to the first plant (e.g., plant classification,
plant maturity, etc.) and/or an ambient environment (e.g.,
substrate slope, substrate hardness, etc.) similar to the first
plant, the depth, width, or distance of the dislodgement force
application can be increased. The dislodgement force application
parameters can be adjusted by increasing the spray duration, the
spray pressure, the spray temperature, the spray profile, or any
other suitable operation parameter. Conversely, the depth, width,
or distance of the dislodgement force application can be decreased
in response to determination that the treatment was more effective
than desired (e.g., displaced more substrate than anticipated).
However, the treatment mechanism operation parameters can be
otherwise adjusted.
[0099] In a second variation, the treatment is plant cauterization,
preferably by electric discharge application but alternatively by
heat application or application of any other suitable
electromagnetic wave. In response to determination that the
treatment was less effective than desired (e.g., the recipient
plant portion reflects green beyond a threshold hue or intensity,
has a high ratio of green to brown hue, has a temperature lower
than a temperature threshold, etc.), for a second plant having
plant parameters similar to the first plant and/or an ambient
environment similar to the first plant (e.g., soil conductivity,
etc.), the electromagnetic parameter values of the treatment can be
increased. Electromagnetic parameters that can be adjusted include
the voltage, the current, the power input to the treatment
mechanism, the electromagnetic wavelength, power provision
duration, treatment mechanism position or orientation, or any other
suitable electromagnetic parameter. Conversely, the electromagnetic
parameter values of the treatment can be decreased in response to
determination that the treatment was more effective than desired
(e.g., cauterized more than the targeted plant portion, cauterized
secondary plants as well, etc.). However, the treatment mechanism
operation parameters can be otherwise adjusted.
[0100] In a third variation, the treatment is working fluid
application to the plant, preferably by applying droplets to a
portion of the plant but alternatively by brushing the working
fluid on the plant or otherwise applying the fluid to the plant. In
response to determination that the treatment was less effective
than desired (e.g., the plant portion was inadequately covered, the
plant portion retained less than a threshold or desired volume of
the working fluid, an adjacent plant portion was affected, etc.),
for a second plant having plant parameters similar to the first
plant and/or an ambient environment similar to the first plant
(e.g., wind speed, humidity, etc.), the fluid application parameter
values of the treatment can be increased or adjusted. Fluid
application parameters that can be adjusted include the spray
pressure, the droplet charge, the droplet temperature, the droplet
size, the position (e.g., height, angle, etc.) of the nozzle 211
during treatment, the actuation speed and/or angle of the nozzle
211 during treatment, the spray pattern 212, or any other suitable
operation parameter. Conversely, the fluid application parameters
can be decreased in response to determination that the treatment
was more effective than desired (e.g., too much fluid was retained
by the plant portion, the plant portion and an adjacent plant or
plant portion were both treated, etc.). However, the treatment
mechanism operation parameters can be otherwise adjusted.
a. Indirect Treatment of Secondary Plants
[0101] The method can additionally include determining the effects
of primary plant treatment on secondary plants S800 within the
geographic area (e.g., indirect treatment of secondary plants 50).
Conversely, the method can include determining the treatment or
operation parameters based on an amount of indirect treatment on
the plant due to treatments of secondary plants 50 within the
geographic area. The effects of primary plant treatment on
secondary plants 50 are preferably considered when determining the
target parameter for a plant, selecting the treatment for the plant
(e.g., in response to receipt of the first measurement and prior to
receipt of a second measurement for a second plant of the
plurality, prior to processing the second measurement for the
second plant of the plurality, etc.), selecting the treatment
mechanism operation parameters selected for the plant (e.g., in
response to selection of an action or treatment for a plant),
and/or determining any other suitable treatment parameter. More
preferably, the effects of primary plant treatment on secondary
plants 50 functions as a variable that is considered when
optimizing the geographic area output parameter. The effects that
are considered can include the amount of indirect application of
the primary plant treatment to the secondary plant, the mechanical
effect on the secondary plants 50 (e.g., whether a dislodged plant
will topple the secondary plant), the chemical effect on the
secondary plants 50 (e.g., the nutrients that will be released due
to primary plant necrosis), the disease and/or pest transmission
effect on the secondary plants 50 (e.g., whether primary plant
necrosis will result in disease and/or pest transmission to the
secondary plant, such as due to increased physical proximity,
etc.), or include any other suitable effect that affects geographic
area output.
[0102] In a first example, the method includes iteratively
determining the treatment and/or treatment mechanism operation
parameters. Iteratively determining the treatment and/or set of
treatment mechanism operation parameters can include selecting a
first treatment and/or set of treatment mechanism operation
parameters for a primary plant 40, determining the effects of the
treatment on a set of secondary plants 50, selecting a second
treatment and/or set of treatment mechanism operation parameters,
and determining whether the first or second treatment and/or set of
treatment mechanism operation parameters results in an output
optimizing the geographic area output parameter. The second
treatment and/or set of treatment mechanism operation parameters
can be selected based on the estimated number of adversely affected
secondary plants 50 due to the first treatment and/or set of
treatment mechanism operation parameters, the type of adverse
effects on secondary plants 50, randomly generated, or otherwise
determined. The second treatment and/or set of treatment mechanism
operation parameters can be determined prior to primary plant
treatment, can be determined after verification of primary plant
treatment, can be determined in response to determination that the
primary plant 40 was inadequately treated (e.g., the measured plant
parameter values varied from the target plant parameter values by
more than a threshold difference), or determined at any other
suitable time.
[0103] In a second example, the method includes selecting the
treatment and/or treatment mechanism operation parameters based on
a parameter value. The parameter can be a plant parameter, ambient
environment parameter, or any other suitable parameter. The
treatment and/or set of treatment mechanism operation parameters
can be selected from a chart, graph, or any other suitable
database. For example, a first treatment and/or set of treatment
mechanism operation parameters for the low-pressure spray mechanism
can be selected in response to determination of a first ambient
wind speed, while a second treatment and/or set of treatment
mechanism operation parameters for the low-pressure spray mechanism
can be selected in response to determination of a second ambient
wind speed. In another example, as shown in FIG. 21, a treatment
for a primary plant 40 can be selected by determining the
treatments that can result in the target plant parameter value for
the primary plant 40, determining the indirect treatment effects on
secondary plants 50 for one or more of the treatments, comparing
the indirect treatment effects to the target plant parameter values
for each of the secondary plants 50, and selecting a treatment
based on the comparison. The secondary plants 50 can be plants
previously identified within the same treatment session (e.g.,
previously treated plants 30 treated within a time window), plants
previously identified in a prior treatment session (e.g., outside
the time window) but unidentified during the instant treatment
session, untreated plants 30, plants identified using a secondary
detection mechanism (e.g., an airborne mechanism), or plants
identified in any other suitable manner.
[0104] Determining the effects of primary plant treatment on
secondary plants S800 within the geographic area preferably
includes identifying a secondary plant S810. Secondary plants 50
are preferably plants within the geographic area or outside of the
geographic area that could potentially experience all or a portion
of the treatment applied to the primary plant 40 can be identified
as a secondary plant. The secondary plants 50 are preferably
associated with the primary plant 40 through an ambient environment
feature. Ambient environment features are preferably characterized
by ambient environment parameters. The ambient environment feature
can be substantially permanent, such as a landform, or can be
substantially transient, such as wind. When a secondary plant is
determined based on a transient ambient environment feature, the
ambient environment parameter values that are used are preferably
those characterizing the ambient environment feature at the time of
the treatment. The values of the ambient environment parameters can
be retrieved from a database, measured, calculated based on
historical information for the geographic area (e.g., soil
conductivity determined based on past rainfall, watering, or other
liquid treatments), or otherwise determined. Examples of ambient
environment features include the geographic landform, distance
(e.g., electric, geographic, etc.), the substrate 70, and wind, but
any ambient environment feature can alternatively be considered.
Examples of ambient environment parameters include the slope of the
landform (e.g., gradient), the ambient environment electrical
conductivity (e.g., soil conductivity), soil porosity, compaction,
erosion, wind speed, and wind direction, but any parameter of any
ambient environment parameter can alternatively be considered.
[0105] Examples of secondary plants 50 include plants that are
located (e.g., positioned) inferior the primary plant 40 along a
landform gradient (e.g., below the primary plant 40 relative to a
gravity vector, as shown in FIG. 18), plants that are electrically
connected to the primary plant 40 through the ambient environment
(e.g., through the substrate, as shown in FIG. 19), and plants that
are located along an ambient environment gradient or vector (e.g.,
downstream or downwind of the primary plant 40, as shown in FIG.
20). Alternatively, the secondary plants 50 can be plants located
within a predetermined distance from the primary plant 40 (e.g.,
within 10 feet of the primary plant 40), or be any other suitable
plant.
[0106] Determining the effects of primary plant treatment on
secondary plants S800 within the geographic area preferably
includes determining an amount of indirect treatment of a plant
S820. Alternatively, determining the effects of primary plant
treatment can include determining a probability of indirect
treatment of a plant, a concentration of indirect treatment of a
plant, a degree of indirect treatment of a plant, or determining
any other suitable measure of indirect plant treatment. The
determined amount of indirect plant treatment on a primary plant 40
is preferably stored in association with the plant, but can
alternatively be determined for the purposes of treatment,
treatment parameter, or other parameter selection only. In a first
variation of the method, the amount of indirect plant treatment is
determined in response to identification of a plant based on the
first measurement. The amount of indirect plant treatment is
determined based on previous treatments of secondary plants 50 in
the field during the same session or within a time window. In a
second variation of the method, the amount of indirect plant
treatment on each of a set of secondary plants 50 is determined in
response to primary plant treatment or treatment mechanism
operation parameter selection, wherein the amount of indirect plant
treatment on each secondary plant is preferably stored in
association with the secondary plant. In this variation, the
secondary plants 50 are preferably already known, either because
the secondary plants 50 were plants previously treated within the
same operation session 20, or because the secondary plants 50 were
plants treated or otherwise identified in a prior operation
session.
[0107] The amount of indirect treatment can be a projected amount
of indirect treatment of a plant, based on a hypothetical set of
treatment parameters, or can be an estimated, calculated, or
measured amount of indirect treatment as a result of treating a
first plant by operating the treatment mechanism in the treatment
mode S400. The amount of indirect plant treatment can be determined
based on a selected set of treatment mechanism operation
parameters, based on a set of actual treatment mechanism operation
parameters (e.g., the operation parameters at which the treatment
mechanism was actually operated in the treatment mode), based on a
set of measured treatment parameter values (e.g., measurements
characterizing the treatment that was actually applied), or based
on any other suitable treatment characterization. The amount of
indirect plant treatment can additionally be determined based on a
parameter of an ambient environment feature (ambient environment
parameter).
[0108] In a first example, as shown in FIG. 18, the plant is
dislodged using a high-pressure spray. The amount of working fluid
(e.g., water) runoff to other plants is determined based on the
volume of working fluid used to dislodge the plant (e.g., estimated
or actual), the relative positions of the first and second plants
on a slope, and the soil porosity and/or saturation at the
treatment time.
[0109] In a second example, as shown in FIG. 19, the plant is
cauterized using electrical discharge. The amount of electrical
discharge applied to other plants is determined based on the amount
of electricity applied to the primary plant 40 and the soil
conductivity at the treatment time.
[0110] In a third example, as shown in FIG. 20, the plant is
treated by applying a growth regulator to the plant. The amount of
growth regulator applied to other plants is determined based on the
duration of growth regulator spraying, the wind speed at the
treatment time, and the wind direction at the treatment time.
[0111] In a first variation, the plant for which the indirect
treatment is determined can be the plant instantaneously identified
based on the first measurement (e.g., the plant for which the
decisions are to be made). This variation is preferably utilized
when determining a treatment and/or operation parameters for a
plant, in response to identification of the plant. Determining the
amount of indirect treatment of the plant includes determining an
amount of indirect treatment of the plant based on prior treatments
of secondary plants 50, wherein the primary plant 40 is inferior,
downstream, or otherwise a recipient of a portion of secondary
plant treatment. The primary plant 40 is preferably associated with
the secondary plant based on an ambient environment parameter, more
preferably the ambient environment parameter at the time of the
prior treatment (e.g., the wind speed and direction during the
prior treatment). The prior treatments of secondary plants 50 can
be determined based on a set of stored operation parameters
selected for the prior treatment, a set of operation parameters
characterizing the actual treatment mechanism output for the prior
treatment, a set of measurements characterizing the effect of the
prior treatment (e.g., based on measurements obtained while
verifying the treatment), or determined in any other suitable
manner. The secondary plant was preferably treated at a prior time
point, wherein the prior time point is preferably within a
threshold time period of the instantaneous time (e.g., within the
same treatment session, operation session, within a predetermined
period of time such as a day, etc.). However, the secondary plant
can be concurrently treated, as the amount of indirect treatment is
being determined, or treated at any other suitable time.
[0112] The determined amount of indirect treatment is preferably
used to adjust the treatment mechanism operation parameters
selected for the first plant. For example, if plant displacement is
selected for both the primary plant 40 and the secondary plant, the
amount of water runoff to the primary plant 40 due to secondary
plant treatment can be determined, the effect of the water runoff
on the soil rigidity determined, and the spray duration adjusted
based on the determined soil rigidity. In another example, if
growth hormone application is selected for both the primary plant
40 and the secondary plant, the amount of growth hormone selected
to be applied to the primary plant 40 is preferably discounted by
the amount of indirect growth hormone applied due to secondary
plant treatment. In another example, if electric discharge was
selected for the secondary plant and growth stimulation is selected
for the primary plant 40, the amount of electrical stimulation on
the primary plant 40 due to secondary plant treatment is
determined, the estimated amount of primary plant growth
stimulation due to the determined amount of electrical stimulation
is determined, and the treatment for the primary plant 40 selected
accordingly. In particular, if the amount of electrical stimulation
will result in the desired growth stimulation, then the plant is
not treated. If the amount of electrical stimulation will result in
insufficient growth stimulation, the already-applied electrical
stimulation can be augmented with a direct treatment. If the amount
of electrical stimulation resulted in an adverse result (e.g.,
necrosed the plant), the target plant parameter value (e.g., target
effect) can be adjusted. In another example, if plant displacement
using high-pressure spray was selected for the secondary plant and
plant watering was selected for the primary plant 40, the amount of
water to be directly applied to the primary plant 40 is discounted
by the amount of water indirectly applied to the primary plant 40
(e.g., due to water runoff) from treatment of the secondary
plant.
[0113] In a second variation, the plant for which the indirect
treatment is determined can be a secondary plant that has not yet
been identified in the instantaneous operation session (e.g.,
duration of continuous operation). Alternatively, the plant for
which the indirect treatment is determined can be a secondary plant
that has been previously identified and treated, wherein the effect
of the indirect treatment is analyzed to determine whether the
primary plant treatment will further or retard progress toward the
target plant parameter value or target effect. However, the
secondary plant can be concurrently treated as the amount of
indirect treatment is being determined, or treated at any other
suitable time. In this variation, a secondary plant is a plant that
is located inferior, downstream, or otherwise a recipient of a
portion of primary plant treatment. The secondary plants 50 are
preferably plants assigned to be retained, but can alternatively be
plants assigned for necrosis. This variation is preferably utilized
when determining a treatment and/or operation parameters for a
primary plant 40, in response to identification of the plant. This
variation can function to consider the effects of the treatment on
other plants, before the treatment is applied. In this variation,
determining the effect of the primary plant treatment on secondary
plants 50 includes determining the indirect treatment to be applied
to each secondary plant for a considered treatment, determining an
effect of the respective portion of the primary plant treatment on
each secondary plant, and, for each secondary plant, comparing the
effect of the respective portion of the primary plant treatment on
each secondary plant with the target plant parameter value for each
secondary plant, wherein the target plant parameter value is
preferably selected to optimize the geographic area output
parameter.
[0114] In one example, when the considered treatment is high volume
working fluid application (e.g., plant dislodgement using
high-pressure spray), the method includes determining an amount of
working fluid estimated to be applied to each secondary plant
and/or determining an amount of nutrients estimated to be applied
to each secondary plant due to first plant necrosis, determining
the effect of applying this amount of working fluid and/or
nutrients to the secondary plant, and selecting the treatment in
response to determination that the additional working fluid and/or
nutrients will assist secondary plant growth to achieve the
respective target plant parameter. Alternatively, the method
includes determining an estimated first volume of water to be
output during the spray duration; determining a target plant
parameter value for each plant of the set by optimizing the plant
output parameter for the geographic area S510; determining a target
volume of water for each plant of the set based on the respective
target plant parameter; determining a second volume of water
subsequently available to each of a set of secondary plants 50
anticipated to be affected by a portion of the first volume of
water; for each plant of the set, comparing the second volume of
water with the target volume of water; and selecting the spray
duration in response to determination that the second volume of
water is less than, equal to, or more than (within a predetermined
volume threshold) the target volume for more than a threshold
number of secondary plants 50, or selecting the spray duration in
response to any other suitable decision threshold being met. The
second volume of water can be estimated based on the portion of
first volume of water, an amount of water instantaneously available
to the secondary plant (e.g., based on historical water application
to the plant, such as due to rainfall, direct watering, runoff from
treatment of other plants, etc.), and an anticipated amount of
water to be applied in the future (e.g., due to forecasted
rainfall, watering based on a known schedule, runoff from
anticipated treatment of other plants, etc.). However, the second
volume of water can be determined in any other suitable manner.
[0115] In another example, when the considered treatment is plant
necrosis by electrical discharge, the method includes determining
the estimated stimulation effect of the electric discharge on a
growth parameter of each of a set of secondary plants 50, which can
include determining an amount of secondary electrical discharge
estimated to be applied to each secondary plant due to the proposed
electrical discharge parameters and the soil conductivity and
determining the effect of applying the secondary electrical
discharge to the secondary plant. The effect of the secondary
electrical discharge on the entire plant or on a growth parameter
of the plant can be determined. The effect of the electrical
discharge on a secondary plant is preferably determined based on
the proposed electrical discharge parameters and the soil
conductivity, but can alternatively or additionally be based on the
atmospheric conductivity, resistivity, or any other suitable
parameter. An electrical discharge parameter (e.g., the voltage,
current, or treatment time) can be selected in response to
determination that the secondary electrical discharge will affect
the secondary plant. In particular, an electrical discharge
parameter that optimizes the geographic area output parameter
(e.g., based on the target growth parameter for the secondary
plant) can be selected, calculated, or otherwise determined based
on the estimated stimulation effect. Alternatively, a predetermined
set of electrical discharge parameters can be adjusted in response
to determination of adverse affects on a threshold proportion of
secondary plants 50. For example, an electrical discharge parameter
can be lowered in response to determination that the secondary
electrical discharge will adversely affect the secondary plant.
Alternatively, a different treatment method for the primary plant
40 can be selected in response to determination that the secondary
electrical discharge will adversely affect the secondary plant.
[0116] In another example, when the considered treatment is plant
growth regulation by spraying a growth regulator (e.g., growth
hormone or fertilizer) on the primary plant 40, the method includes
determining an amount of the growth regulator that will be applied
to each secondary plant, based on the magnitude of the wind and the
concentration of the growth regulator spray. The treatment and
associated operation parameters are selected in response to
determination that the secondary plants 50 are to be necrosed, have
been necrosed, or will positively benefit from the indirect
application of growth regulator. In response to determination that
the secondary plants 50 will be adversely affected by the
considered treatment, a second treatment can be selected or the
treatment mechanism operation parameters adjusted. For example, the
droplet charges can be increased (e.g., thereby generating a
stronger electric field that prevents droplet drift toward the
secondary plant), the spray angle or position changed to be upwind
of the primary plant 40, the droplet size increased, the growth
regulator concentration in the working fluid lowered, or the
operation parameters adjusted in any other suitable manner.
[0117] The combined effects of treatments on multiple plants can
additionally be considered for a given plant. For example, if plant
necrosis by electrical discharge was being considered for the
primary plant 40 and plant displacement using high-pressure spray
was used on a first, previously treated secondary plant 20, the
effect of the electrical discharge on a third plant due to
increased soil conductivity can be determined and used in
determining whether primary plant necrosis should be achieved using
electrical discharge. In another example, if growth regulation by
spraying a growth regulator was selected for a first and a second
plant and growth regulation by spraying a growth regulator is being
considered for a third plant, the combined effects of indirect
growth regulator application due to treatment of the first, second,
and third plants on a fourth plant can be determined and used in
determining whether primary plant growth regulation should be
achieved using growth regulator application. However, the indirect
effects of primary plant treatment can be otherwise determined and
utilized.
b. Plant Dislodgement or Plant Portion Removal
[0118] In a first variation of the method, the plant treatment
includes dislodging the plant from the substrate 70 (e.g., soil)
S110 by displacing the supporting substrate from underneath the
plant (e.g., by digging out the plant). The plant can be dislodged
by displacing most of the substrate under the plant stem,
displacing most of the substrate to which the roots are attached
(e.g., remove the substrate from the roots), displacing most of the
substrate under the roots (e.g., dig underneath the roots), or
displacing any other suitable volume of substrate. The depth of the
substrate displacement is preferably deeper than the root depth, as
shown in FIGS. 9A and 9C, but can alternatively be shallower than
the root depth (e.g., and either expose the root(s) or sever the
root(s)), as shown in FIG. 9B, or equivalent to the root depth. The
root depth can be the actual root depth, an estimated root depth,
or any other suitable depth. The distance of substrate displacement
is preferably at least half the root lateral span (e.g., such that
the plant is unbalanced and falls over due to the plant mass), as
shown in FIG. 9A, but can alternatively be less than half the root
lateral span, more than the root lateral span, as shown in FIG. 9B,
or be any other suitable distance. Alternatively, the depth and
distance of the substrate displacement can be predetermined,
selected based on the measurement, static, or determined in any
other suitable manner. The substrate 70 can be displaced by
high-pressure working fluid application, such as of water or air,
but can alternatively be displaced by a digging mechanism (e.g., a
shovel or spade), or any other suitable substrate displacement
mechanism.
[0119] Dislodging the plant S110 preferably includes applying a
dislodging force to the substrate surrounding the plant. The
dislodging force can be applied by a high-pressure spray mechanism,
a digging force applicator (e.g., a shovel), or any other suitable
force applicator. The high-pressure spray mechanism preferably
applies a high-pressure spray of working fluid, wherein the working
fluid can be water, air, or any other suitable working fluid. The
method can additionally include pressurizing the working fluid to a
spray pressure. The spray pressure is preferably constant
throughout system operation, but can alternatively be variable
dependent upon the treatment parameters. The method can
additionally include mixing additives into the working fluid to
obtain a predetermined concentration.
[0120] Dislodging the plant S110 preferably includes identifying a
plant within a geographic area S100, identifying a plant feature
for use in treatment application S200, determining a set of
operation parameters for a treatment mechanism S300, and operating
the treatment mechanism in the treatment mode S400. More
preferably, dislodging the plant S110 includes identifying a plant
within a geographic area S100; identifying a plant feature S200,
including identifying a junction 60 between a plant stem and a
substrate supporting the plant; determining a junction distance;
determining a set of operation parameters for a treatment mechanism
S300, including determining an initial spray parameter based on the
junction distance; and operating the treatment mechanism in the
treatment mode S400 in response to satisfaction of the initial
spray parameter.
[0121] The inventors have discovered that increased displacement
distances can be achieved with increased continuous or
substantially continuous spray time, using the same pressure, even
as the active area (e.g., sprayed area) is moving. This is because
once an initial crack is formed in the substrate 70, the substrate
70 adjacent the crack is weakened and is displaced more easily with
application of the same force. In operation, the further away the
plant junction 60 is from the system traversal path, the earlier
and/or further away from the junction 60 the system should begin
spraying. Alternatively, the further away the plant junction 60 is
from the system travel path, the longer the system should
spray.
[0122] Identifying a junction 60 between a plant stem and a
substrate 70 supporting the plant functions to identify a plant
feature that functions as a reference point from which a spray
duration and/or spray position can be determined. The junction 60
is a plant feature, wherein the junction 60 is identified in a
similar manner in which the plant feature is identified, as
discussed above. In particular, processing the image to identify
the junction 60 can include extracting a ground plane from the
image, and identifying a plant stem (plant support structure)
proximal the sensor within the image, and identifying the junction
60 between the plant stem and the ground plane (e.g., based on
distance analysis, color analysis, pattern analysis, etc.). The
junction 60 is preferably identified in a measurement of the
geographic area that includes the junction 60 (e.g., interface
between the plant stem and the substrate 70). In one variation, the
measurement is an optical image captured at an angle between a
vector parallel to the substrate surface and a normal vector to the
substrate surface. However, the measurement can be any other
suitable measurement.
[0123] Determining a junction distance functions to determine a
geographical distance between the plant, more preferably the
junction 60, and an anticipated position of a treatment mechanism.
The anticipated position of the treatment mechanism is preferably
determined based on the traversal path for the treatment mechanism,
wherein the anticipated position of the treatment mechanism can be
the geographic location at which a tangent to the traversal path is
substantially aligned with the plant junction 60. Alternatively,
the anticipated position of the treatment mechanism can be the
geographic location at which the active area is closest to the
plant junction 60. The treatment mechanism is preferably angled
perpendicular to the system traversal vector, wherein the active
area is substantially aligned with the junction 60 at the
anticipated position, but can alternatively be arranged at an angle
relative to the system traversal vector, wherein the anticipated
position of the treatment mechanism is further dependent upon the
treatment mechanism angle. However, the anticipated position of the
treatment mechanism can be determined in any other suitable manner.
The anticipated position is preferably determined based on an
instantaneous system traversal vector (treatment mechanism
traversal vector, sensor traversal vector, etc.), but can
alternatively be determined based on a predetermined traversal path
(e.g., pre-programmed path for the system), a geographical feature
(e.g., a road or furrow, as determined based on the instantaneous
system position and a map, satellite views, and/or user entries),
or based on any other suitable position parameter.
[0124] However, the junction distance 61 can be determined in any
other suitable manner. For example, the junction distance 61 can be
determined based on the geographic location associated with the
plant feature measurement (e.g., the geographic location at which
the plant feature measurement was taken), the detection mechanism
angle relative to the system traversal vector, the system traversal
vector magnitude (e.g., system velocity) and the distance between
the junction 60 and the detection mechanism 100. The distance
between the junction 60 and the detection mechanism 100 can be
determined from the plant feature measurement (e.g., using a
stereoview), from a distance measurement (e.g., LIDAR), using known
marker size comparisons, from the instantaneous system geographic
location and an estimated or known plant geographic location, or
determined in any other suitable manner. In another example,
determining the junction distance can include extracting a
preliminary distance between the sensor and the plant and
determining the junction distance based on the preliminary junction
distance 61 and a predetermined distance between the first sensor
and the treatment mechanism. Determining the junction distance can
further include correcting the preliminary junction distance 61
based on the system velocity.
[0125] Alternatively, the high-pressure spray mechanism can be used
to remove a portion of the plant. In this specific variation, the
method can include identifying a portion of the plant to be removed
(e.g., wherein the identified plant portion is diseased, too close
to a neighboring plant portion or plant, or has any other suitable
characteristic), and operating the treatment mechanism in the
treatment mode (e.g., high pressure spray mode) to remove the plant
portion. The treatment mechanism operation parameters, such as the
pressure and duration, are preferably selected based on the
parameters of the plant portion to be removed or affected by the
applied force. For example, higher pressures can be used to cut
thicker plant stems.
[0126] Determining an initial spray parameter based on the junction
distance 61 functions to determine when and/or where the system
should start spraying. The initial spray parameter is preferably
determined when the treatment mechanism is statically mounted
(e.g., fixed) relative to the mounting mechanism and/or emits
working fluid at a substantially constant pressure (e.g.,
non-variable or adjustable). Varying excavation distances relative
to the system can be achieved by varying the spray duration, even
though the working fluid is sprayed at the same area relative to
the system. The initial spray parameter can be an initial spray
time, an initial spray position, or any other suitable spray
parameter. The initial spray parameter is preferably determined
based on a spray duration. The initial spray time can be the
estimated time at which the treatment mechanism will be located at
the anticipated position, less the spray duration. For example, if
the spray duration is 10 seconds, then the treatment initiation
time is 10 seconds before the treatment mechanism is aligned with
the plant junction 60. The initial spray position can be the
position at which the system must begin spraying in order to spray
for the spray duration, given the system velocity.
[0127] The spray duration is preferably determined based on the
spray pressure (e.g., predetermined, measured, or anticipated) and
the junction distance 61, wherein the spray is preferably
sufficient to excavate or displace substrate at or proximal the
junction 60 after spraying for the spray duration. The spray
duration can additionally be determined based on the ambient
environment parameters, such as soil saturation, soil looseness or
compactness, soil porosity, soil rigidity, soil retention rate,
soil erosion, wind speed, wind direction, humidity, or any other
suitable ambient environment parameter. For example, the spray
duration can be increased for harder or more compacted soil, dryer
environments, or higher wind speeds. The ambient environment
parameter can be retrieved, determined based on historical records
generated within a time window of the instantaneous time (e.g.,
based on historical rainfall and watering patterns), determined
based on historical records associated with the geographical
location of the geographic area, determined based on substantially
instantaneous measurements, or determined in any other suitable
manner. Alternatively, the spray duration can be determined by
estimating an amount of substrate to be removed based on the
junction distance 61 (e.g., the distance from the traversal path,
the depth and shape of the trench 62, etc.) and estimating an
amount of removal time (the spray duration) based on the amount of
substrate to be removed and the pressure. The spray duration can be
predetermined, selected from a chart or graph, calculated, or
otherwise determined.
[0128] Operating the treatment mechanism in the treatment mode S400
in response to satisfaction of the initial spray parameter
functions to spray the geographic area for a long enough time, such
that the plant is at least partially dislodged. The system
preferably translates along the traversal path during treatment
mechanism operation in the treatment mode (e.g., as the system
sprays), but can alternatively stop and remain static. The system
translation rate is preferably the same rate as when the treatment
mechanism was in the standby mode, but can alternatively be a
different rate. Operating the treatment mechanism in the treatment
mode S400 preferably includes spraying the active area with a
continuous or intermittent stream of pressurized working fluid.
[0129] Operating the treatment mechanism can additionally include
selecting treatment mechanism operation parameters. The operation
parameters are preferably selected based on the junction distance
61, but can alternatively or additionally be selected based on the
system velocity, ambient environment parameters, plant parameters,
or any other suitable information. The operation parameters can
include the spray duration, initial spray time, initial spray
position, spray pressure, spray temperature, spray charge, spray
composition, or any other suitable operation parameter. The
operation parameters can additionally include the spray pattern
212. The spray pattern 212 can be constant, vary with time or
proximity to the plant, or vary in any other suitable manner. In
one variation of the method, the selected spray pattern 212 changes
from a solid stream, to create a crack in the substrate 70, to a
flat spray pattern that removes a larger area of substrate 70. In
another variation, the selected spray pattern 212 is maintained as
a solid stream to dig deeper into the substrate 70. The system
velocity can be varied to accommodate the spray pattern 212. The
spray pattern 212 is preferably selected based on the desired
function, wherein the desired function can be determined based on
the ambient environment parameters (e.g., soil hardness, etc.)
and/or plant parameters (e.g., root depth, root thickness, root
spread, etc.). For example, a first spray pattern (e.g., a wide
spray pattern) can be selected for plants having fibrous roots and
a second spray pattern and/or spray duration selected for plants
having tap roots. When the operating parameters are selected based
on the plant parameters, the method can include classifying the
plant, estimating a plant root depth based on the classification,
determining an amount of substrate to be removed based on the plant
root depth, and determining an amount of removal time (spray
duration) such that a resultant depth of the substrate to be
removed is at least a predetermined percentage (e.g., 10%, 50%,
90%, etc.) of the plant root depth. In another example, a first
spray pattern (e.g., cone spray pattern, tight spray pattern, etc.)
can be selected to cut, sever, or otherwise apply a mechanical
force to a plant portion.
[0130] Alternatively or additionally, the method can include
selecting a spray angle for the nozzle 211. This can be
particularly desirable when the nozzle 211 is actuatable about a
rotational axis. The rotational axis is preferably oriented
parallel the mounting mechanism longitudinal axis, but can
alternatively be perpendicular the mounting mechanism longitudinal
axis or arranged in any other suitable manner. The selected spray
angle is preferably based on the junction distance 61, with larger
angles selected for larger distances, but can alternatively or
additionally be determined based on the instantaneous or
anticipated working fluid pressure, based on the ambient
environment parameters (e.g., wind speed), or determined in any
other suitable manner. The method can additionally include
translating the system to align the active area with a treatment
position. For example, the system can automatically deviate from
the traversal path in a direction toward the junction 60 in
response to detection of a junction distance 61 beyond a threshold
distance. The system can automatically recover the traversal path
after plant treatment. However, the treatment mechanism operation
parameters can be otherwise selected.
c. Plant Cauterization
[0131] In a second variation of the method, the plant treatment
includes cauterizing the tissues of a plant section. The plant that
is cauterized is preferably below a threshold size (e.g., threshold
mass, height, stem thickness, etc.), such as below 10 cm, 5 cm, 1
meter, or any other suitable threshold, but can alternatively be
any size. The plant can be cauterized by applying high voltage
electric power to the plant, by applying a heating element to the
plant, or cauterized in any other suitable manner. The
cauterization preferably changes the plant cell structure (e.g.,
ruptures or otherwise changes the cell structure), such that
nutrient and/or water transfer beyond the cauterized section is
hindered or prevented, but cauterization can otherwise affect the
plant. After cauterization, the plant portion distal the plant stem
or root system, beyond the cauterized section, preferably necroses
(e.g., dies). However, the probability of plant portion necrosis is
preferably related to the degree of section cauterization, wherein
plant cauterization beyond a threshold degree (e.g., section
cauterization length, section cauterization depth, temperature
increase, etc.) preferably corresponds with a high probability of
plant portion necrosis, and plant cauterization lower than the
threshold degree is preferably associated with lower probabilities
of plant necroses with lower degrees of plant cauterization.
[0132] For these reasons, cauterization by electric discharge can
be more efficacious than direct heat application (e.g., RF heat
application). The inventors have discovered that applied electric
discharge will affect (e.g., cauterize) the plant section 90 having
the highest electric resistance located between the discharge
application point and electrical ground (e.g., the substrate 70).
This section 90 can be the thinnest section of the plant (e.g., the
portion of the plant having the smallest cross-section), the
densest section of the plant, or a previously fully or partially
cauterized section of the plant, or have any other suitable
characteristic. This results in cauterization of a plant
cross-section, thereby creating a nutrient and water blockage in
the fluid path between the root and/or stem system and the plant
portion to be necrosed. The thinnest portion of the plant can be a
portion of the stem, a junction 60 between the stem and the root, a
root, an internode, an axil between a lateral shoot and the stem, a
petiole, a flower stalk, or any other suitable portion of a plant.
In operation, electric discharge applied to a portion of the plant
will travel along the plant, toward electrical ground, which can be
the substrate 70, a grounding electrode applied to the plant by the
system, or any other suitable electrical ground. More preferably,
the electric discharge will travel along the plant toward the root
system, which is connected to the substrate 70, and will cauterize
the thinnest plant section along that path. Furthermore, plant
growth can be stimulated by small doses of electric discharge
application. Therefore, plant cauterization through electric
discharge application can additionally minimize adverse treatment
effects on adjacent plant portions and/or plants electrically
connected to the treated plant.
[0133] Cauterizing the plant S120 preferably includes identifying a
plant within a geographic area S100, identifying a plant feature
for use in treatment application S200, determining a set of
operation parameters for a treatment mechanism S300, and operating
the treatment mechanism in the treatment mode S400. More
preferably, cauterizing the plant S120 includes identifying a
plant, in-situ, within a geographic area; determining a set of
operation parameters for a treatment mechanism S300, including
selecting a treatment position on the in-situ plant for electric
discharge application, wherein selecting the treatment position
includes identifying a plant feature S200, wherein identifying the
plant feature includes determining a plant cross-section, more
preferably a high-resistance cross-section (e.g., relative to the
remainder of the plant); and applying electric discharge to the
treatment position by operating the treatment mechanism in the
treatment mode S400. The method can additionally include
determining a portion of the plant to be necrosed, prior to
treatment position selection.
[0134] Determining a portion of the plant to be necrosed can
include determining to necrose the entirety of the plant or
determining to necrose a portion of the plant. Determining to
necrose a portion of the plant can additionally include identifying
a specific portion of the plant to necrose (e.g., a side of the
plant, a branch of the plant, a fruit of the plant, etc.). The
determination is preferably based on the geographic area output
parameter maximization, as discussed above, but can alternatively
be based on an instantaneous measurement of plant health, plant
portion health, or based on any other suitable parameter. For
example, a plant branch proximal a secondary plant can be
identified for plant necrosis in response to determination that the
plant branch will crowd (e.g., impede growth of) the secondary
plant.
[0135] Selecting a treatment position on the in-situ plant for
electric discharge application functions to select a treatment
position on the plant that will result in electric discharge
concentration at a plant cauterization section, wherein
cauterization of the plant cauterization section substantially
isolates or otherwise decreases nutrient communication between the
plant portion identified for necrosis and the remainder of the
plant. The treatment position is preferably selected based on a
plant cross-sectional dimension (e.g., a plant feature). More
preferably, the treatment position is selected based on the
location of a local minima, wherein the plant section is arranged
along the plant, between the root system and the plant portion to
be necrosed. The local minima is preferably the plant section
having the smallest or narrowest cross-sectional dimension of the
plant that is located in an intermediary plant section between the
root system and/or electrical ground and the plant portion to be
necrosed, but can alternatively be a section of the intermediary
plant section having a cross-sectional dimension less than a
threshold dimension, or be determined in any other suitable manner.
The local minima is preferably determined from analysis of a
measurement or a combination of multiple measurements recorded
concurrently or asynchronously. The measurement can be the first
measurement, or can be a second measurement. The measurement can be
a stereoview, single view, multispectral measurement, LIDAR
measurement, or any other suitable measurement. The selected
treatment section is preferably located along the plant portion to
be necrosed, distal the plant portion to be retained across the
local minima plant section from electrical ground. However, the
treatment section can be any other suitable section.
[0136] Alternatively, the treatment position can be determined
iteratively. For example, a first treatment position can be
selected, and the method can include adjusting the treatment
position in response to determination of a second plant portion
between the first treatment position and the junction having a
cross section with a smaller dimension than the plant portion to be
necrosed. However, the treatment position can be selected in any
other suitable manner.
[0137] In one variation, the entire plant is to be necrosed. The
selected treatment position is preferably based on the narrowest
plant section, most proximal the plant root system. Alternatively,
the selected treatment position can be a thick portion of the stem
proximal the plant root system (e.g., proximal the substrate 70),
with no intermediary plant sections that are narrower than the
treatment position. Alternatively, the selected treatment position
can be any other suitable position on the plant or in the ambient
environment proximal the plant. Selecting the treatment position
can include identifying a section of the plant stem, more
preferably a section of the plant stem contiguous with a substrate
70 supporting the plant; estimating a cross-sectional minima of the
section; and selecting a treatment position on the plant for
electric discharge application, the treatment position located
between the cross-sectional minima of the section and the substrate
70.
[0138] In another variation, a portion of the plant is to be
necrosed, such as a branch, fruit, or other portion. The selected
treatment position is preferably based on the narrowest plant
section between the plant portion to be necrosed and the plant
portion to be retained. The selected treatment position is
preferably on the plant portion to be necrosed, but can
alternatively be on any other suitable plant portion.
Alternatively, the selected treatment position can be any other
suitable position on the plant or the ambient environment.
Selecting the treatment position can include identifying a plant
section electrically arranged between the plant portion to be
necrosed and electrical ground, the plant section having a
cross-sectional dimension smaller than a cross-sectional dimension
of a second plant portion determined for retention, the second
plant portion electrically arranged between the plant section and
the substrate 70; and selecting a position on the plant, opposing
the second plant portion across the plant section, as the treatment
position.
[0139] The method can additionally include creating a local minima
on the plant, as shown in FIG. 22A. The local minima is preferably
created after determining a portion of the plant to be necrosed,
but can alternatively be created at any other suitable time. The
local minima is preferably created in response to determination
that the intermediary plant portion between the plant portion to be
necrosed and the electric ground lacks a local minima, but can
alternatively be created for every cauterization or created in
response to any other suitable event. Creating the local minima
preferably includes identifying an intermediary plant portion,
selecting a plant section within the intermediary plant portion,
and reducing the cross section of the selected plant section S121.
The selected plant section is preferably a plant section that is
easily accessible to the system (e.g., accessible without damaging
other plant portions), but can alternatively be any other suitable
plant section. Reducing the cross section can include cutting the
plant section, knicking the plant section, or otherwise reducing
the cross section. Alternatively, the method can include increasing
the resistivity of the plant section instead of reducing the cross
section, such as by cauterizing the plant section with a first line
or point cauterization mechanism (e.g., by using RF heat or
microwave heat). The local minima can be otherwise created.
[0140] Applying electric discharge to the treatment position
functions to cauterize the plant section. Applying the electric
discharge to the treatment position can include positioning a
treatment mechanism at the treatment position electrically distal
electrical ground, with the plant section (e.g., local minima)
located between the application position and electrical ground, and
operating the treatment mechanism in the treatment mode S400, as
shown in FIG. 22B. In one variation, the treatment mechanism is a
Tesla coil 24o with an applicator wire, wherein positioning the
treatment mechanism includes mechanically coupling the applicator
wire to the treatment position. In another variation, the
applicator wire can be retained within a predetermined distance of
the treatment position (e.g., 1 cm away, 1 mm away, etc.). In
another variation, the treatment mechanism includes a first and
second electrode, wherein the electric discharge is generated
between the first and second electrodes. In this variation,
positioning the treatment mechanism includes arranging the first
and second electrodes on opposing sides of the treatment position
on the plant. However, the treatment mechanism can be any other
suitable mechanism and positioned in any other suitable
position.
[0141] Operating the treatment mechanism in the treatment mode S400
preferably includes providing sufficient power input to achieve a
set of treatment parameters. The treatment parameters can be
predetermined or dynamically determined. The treatment parameters
can include the electric discharge voltage, the electric discharge
current, the duration of electric discharge application, or any
other suitable electric discharge parameter. In one variation,
operating the treatment mechanism in the treatment mode S400
includes emitting electric discharge at 50 kV or higher. However,
the electric discharge can be emitted at any other suitable
voltage. The electric discharge current is preferably low (e.g., 1
mA, 1 A, 10 A, etc.), but can alternatively be high (e.g., 100 A),
or any other suitable current magnitude.
[0142] In a second variation, the method can include determining
the set of electric discharge parameters based on a translation
velocity of a treatment mechanism configured to emit the electric
discharge. In particular, the electric discharge current can be
selected based on the system translation velocity, wherein higher
currents are selected for faster velocities, and lower currents are
selected for slower velocities. However, the electric discharge
voltage, electric discharge application duration, or any other
suitable parameter can be selected based on the translation
velocity.
[0143] In a third variation, the method can include determining the
set of electric discharge parameters based on ambient environment
parameters. Determining the set of electric discharge parameters
based on ambient environment parameters can include determining the
set of electric discharge parameters based on an electrical
conductivity of the substrate 70 and target growth parameters for
secondary plants 50 within the geographic area that are
electrically connected to the plant, as discussed above. However,
the set of electric discharge parameters can be determined in any
suitable manner.
[0144] Alternatively, the treatment can be applied to a geographic
region, more preferably a geographic region within the geographic
area, wherein all plants are to be treated with the same treatment.
For example, all plants in geographic region can be necrosed (e.g.,
the furrow between the crop rows). In this variation, the method
can include identifying a geographic region for cauterizing
treatment application, and in response to collocation the active
area of the electric discharge mechanism and the geographic region,
operating the electric discharge mechanism in the treatment mode
based on a set of operation parameters, wherein the operation
parameters are selected based on a system parameter. The geographic
region can be a region predetermined to have all or most (e.g.,
90%, 70%, etc.) of the plants necrosed, a set of substantially
continuous plants identified to be necrosed, or any other suitable
geographic region. The active area is preferably the area to which
the electric discharge is applied by the electric discharge
mechanism. The electric discharge mechanism is preferably operated
in the treatment mode when the active area is aligned with or
within the geographic region, and preferably operated in the
standby mode when the active area is outside of the geographic
region. However, the electric discharge mechanism can be otherwise
operated. Collocation of the active area and the geographic region
can be determined based on timing, odometry, geographic location
(e.g., through GPS), or any other suitable method. The method can
additionally include selecting the treatment mechanism operation
parameters for the electric discharge mechanism, as discussed
above. For example, the electric discharge mechanism operation
parameters can be determined based on system parameters (e.g.,
system speed, etc.), ambient environment parameters (e.g.,
humidity, temperature, soil conductivity, etc.), or any other
suitable set of parameters. In a specific example, the amount of
current can be selected based on system velocity.
d. Growth Regulator Application
[0145] In a third variation of the method, the plant treatment
includes regulating plant growth by applying a growth regulator to
the plant S130. The growth regulator can be specifically applied to
a feature of the plant (e.g., the fruit, flower, stigma, style,
stomata, top-facing leaves, young or old leaf, as determined from
the color and/or shape, leaves proximal the ground, apical bud,
terminal bud, node, etc.), applied to a plant portion (e.g., the
top of the plant), or generally applied to the plant (e.g., be
untargeted toward a specific plant portion). The growth regulator
is preferably sprayed (e.g., misted) onto the plant, but can
alternatively be brushed onto the plant, dusted onto the plant,
rolled onto the plant, or otherwise applied to the plant.
Alternatively, plant growth can be regulated by applying the growth
regulator to the ambient environment, such as the atmosphere
surrounding the plant, the substrate adjacent the plant, or any
other suitable portion of the ambient environment. However, the
growth regulator can be applied to any other suitable location.
[0146] Regulating plant growth S130 preferably includes identifying
a plant within a geographic area S100, identifying a plant feature
for use in treatment application S200, determining a set of
operation parameters for a treatment mechanism S300, and operating
the treatment mechanism in the treatment mode S400. More
preferably, regulating plant growth S130 includes identifying a
plant within a geographic area S100, identifying a plant feature
for growth regulator application, determining a treatment position
relative to the plant feature, and operating the treatment
mechanism to apply the growth regulator to the plant. The growth
regulator is preferably mixed into a working fluid, wherein the
working fluid can be a liquid, such as water or another liquid, or
a gas. The growth regulator can be a growth promoter (e.g., growth
hormone, nitrogen, potassium, phosphorous, etc.), fertilizer,
growth retardant, water, defoliators, bacteria, acid, base, organic
material, salts, fumigant, fungicide, adjubants, gas, dust, or any
other suitable growth regulation compound. The plant is preferably
identified through the first measurement, as discussed above, but
can alternatively be determined in any other suitable manner.
[0147] The plant feature is preferably identified in the manner
discussed above, but can alternatively be determined in any other
suitable manner. The plant feature is preferably identified from
the first measurement, but can alternatively be determined from a
second measurement. The plant feature can be identified from
measurements of an entire side of a plant, the top-facing leaves of
the plant, the top leaves of the plant, the leaves proximal the
insertion point, a leaf inferior the insertion point, the leaves
within a predetermined distance from substrate 70, or measurements
of any other suitable plant portion. The growth regulator is
preferably applied to the identified plant feature, but the plant
feature can additionally or alternatively be used to identify a
treatment position or used in any other suitable manner. Examples
of plant features include leaves, flowers (e.g., corn silks), and
stomata, but any other suitable plant feature can be identified.
Any suitable number of plant features can be identified from one or
more measurements.
[0148] Determining a treatment position relative to the plant
feature functions to determine a position for the treatment
mechanism that will result in growth regulator application to the
plant feature. In a first variation, the treatment is to be applied
to a broad surface of a leaf. The treatment position preferably is
an interleaf insertion point, located between a top or first
surface of a first leaf (e.g., superior the first leaf) and a
bottom or second surface of a second leaf (e.g., inferior the
second leaf), wherein the first leaf is targeted for treatment. In
one example, identifying the interleaf position includes analyzing
an optical image to identify a superior and inferior plant leaf and
selecting a point between the superior and inferior plant leaves as
the insertion point selecting a point between the superior and
inferior plant leaves as the insertion point. Alternatively, the
treatment position is the top of the plant, wherein the nozzle is
positioned superior the plant along a gravity vector. The top of
the plant can be determined from images, mechanical determination,
or determined in any other suitable manner. Alternatively, the
treatment position can be adjacent the plant or leaf, at an angle
to the plant or leaf, below the plant or leaf, or be any other
suitable position. In a second variation, the treatment is to be
applied to a flower, wherein the treatment position is preferably
proximal the flowers on the plant, more preferably above the
flowers (e.g., superior the flowers along a gravity vector) but
alternatively proximal (e.g., on substantially the same plane as
the flowers relative to the gravity vector) or below the flowers
(e.g., inferior the flowers along the gravity vector). However, any
other suitable treatment position can be selected. The treatment
position can additionally be selected based on ambient environment
parameters. For example, in response to determination of a wind
direction, the selected treatment position can be upwind of the
targeted plant feature.
[0149] Operating the treatment mechanism to apply the growth
regulator to the plant preferably includes actuating the treatment
mechanism to align the active area with the treatment position and
misting the growth regulator on the plant feature. Alternatively,
operating the treatment mechanism to apply the growth regulator can
include passively aligning the treatment mechanism active area with
the treatment position by moving the entire system such that the
treatment position is in range of the active area or the active
area is aligned with the treatment position and spraying the growth
regulator on the plant feature. Misting the growth regulator
preferably includes forming droplets including growth regulator.
Misting the growth regulator can additionally include charging the
droplets. Misting the growth regulator can additionally include
electrically connecting the system, as shown in FIG. 23A, more
preferably the charging electrode but alternatively any other
suitable system component, to the plant S131.
[0150] Forming the droplets function to generate droplets of the
working fluid 202, wherein the working fluid preferably includes
the growth regulator. The droplets can have a substantially uniform
size (e.g., diameter) or have different sizes (e.g., wherein the
droplet population has a size distribution). The droplets can be
formed by aerosolizing the working fluid, electrospraying the
working fluid (e.g., by forming a Taylor cone), or be otherwise
formed.
[0151] The droplets can be charged or uncharged. Droplet charging
can assist in aerosolization. Droplet charging can additionally or
alternatively assist in targeted droplet application to the plant
feature. The plurality of droplets are preferably charged to a
single polarity (e.g., either positive or negative), but can
alternatively be charged to different polarities. The droplets can
be charged to the Rayleigh charge limit, such that the droplets
aerosolize due to charge interactions. Alternatively, the droplets
can be charged below the Rayleigh charge limit, to control droplet
dispersion. The droplets can be charged before emission or after
droplet generation, after emission or droplet generation, as the
droplet is emitted from the treatment mechanism or nozzle 211,
before droplet application to the plant, or after droplet
application to the plant. Charging the droplet preferably includes
generating an electric field having a higher field concentration at
a point proximal the nozzle 211 and distal the electric field
(e.g., with an electrode proximal the nozzle 211), but the droplets
can be otherwise charged.
[0152] In variations in which the droplets are charged, the method
can additionally include electrically connecting the system, more
preferably the charging electrode but alternatively any other
suitable system component, to the plant. The system can be
electrically connected to the substrate 70, wherein the substrate
70 electrically connects the system to the plant. Alternatively,
the system can be electrically connected to an accessible plant
portion, such as a stem. Alternatively, the system can be
electrically connected to the plant feature to which the growth
regulator is to be applied. Alternatively, the system can be
electrically connected to the plant in any other suitable
manner.
[0153] Operating the treatment mechanism to apply the growth
regulator to the plant can additionally include selecting treatment
mechanism operation parameters, such as the working fluid emission
pressure, the droplet size, the droplet charge, the nozzle
position, the nozzle shape, the amount of growth regulator to be
applied (e.g., growth regulator concentration, growth regulator
mass, etc.), the duration of working fluid misting, or any other
suitable parameter.
[0154] The treatment mechanism operation parameter value is
preferably selected based on the target plant parameter. For
example, a first fertilizer concentration can be selected in
response to a determination to necrose the plant, while a second
fertilizer concentration can be selected in response to a
determination to stimulate plant growth, wherein the first
concentration is preferably higher than the second concentration.
Alternatively or additionally, the treatment mechanism operation
parameter can be determined based on the plant age, growth stage,
or based on any other suitable plant parameter. However, the
treatment operation parameter value can be otherwise determined.
The treatment mechanism operation parameter preferably includes the
amount of growth regulator to be applied to the plant, but can
alternatively or additionally include the duration of growth
regulator application to the plant, the temperature, charge, or
pressure of the growth regulator to be applied to the plant, or any
other suitable parameter of growth regulator application. However,
the treatment mechanism operation parameter can be any other
suitable parameter.
[0155] In one variation, the treatment mechanism operation
parameter value is selected based on a plant growth regulator
capacity, or the capacity of the plant to receive the growth
regulator without necrosing. The amount of growth regulator applied
is preferably less than the plant growth regulator capacity, but
can alternatively be equal to or more than the plant growth
regulator capacity. Higher growth regulator concentrations and/or
application durations are preferably selected for plants having
higher plant growth regulator capacities, and lower growth
regulator concentrations and/or application durations are
preferably selected for plants having lower plant growth regulator
capacities. Alternatively, higher growth regulator concentrations
and/or longer application durations can be selected for younger
plants, plants lagging behind in growth stages relative to other
plants within the geographic area, or for any other suitable set of
plants. However, the amount of growth regulator applied to the
plant can be determined in any other suitable manner. The plant
growth regulator capacity is preferably estimated, but can
alternatively be empirically determined, selected from a chart, or
otherwise determined. In one variation, the plant growth regulator
capacity is determined based on the plant size. For example, a
first plant growth regulator capacity is selected for a first plant
with a first mass, and a second plant growth regulator capacity
lower than the first is selected for a second plant with a second
mass lower than the first.
[0156] In a second variation, the plant growth regulator capacity
is determined based on a stomatal parameter. The stomatal parameter
can be a stomatal opening parameter, a stomatal concentration on
the plant feature or plant portion to which the treatment is to be
applied, a number of stomata on the plant feature, a number of
stomata on the plant, a stomatal distribution over the plant or
plant feature, or any other suitable stomatal parameter. Examples
of stomatal opening parameters include a degree (e.g., proportion)
of stomatal opening for a set of stomata on the plant portion
(e.g., leaf, set of leaves, etc.), the proportion of stomata in a
set of stomata that are open beyond a threshold degree, and a
degree of stomatal opening for each stomata (e.g., based on the
ratio of the stomatal width to the maximum length of a stomatal
pore and the pore area), but the stomatal opening parameter can
include any other suitable measure of stomatal opening. Determining
the stomatal parameter preferably includes recording an image of
the plant portion (e.g., leaf) using multispectral, IR, or any
other suitable image capturing method, identifying stomata within
the image, and determining (extracting, recognizing, etc.) the
stomata parameter for the plant portion from the image. For
example, determining the stomatal opening parameter includes
determining the stomata dimensions from the image and calculating
the stomata parameter based on the extracted dimensions. However,
the parameters can be otherwise determined. The determined plant
growth regulator capacity is preferably inversely related to the
stomatal opening parameter, wherein increased capacity is
determined for lower degrees of stomatal opening and lower capacity
is determined for higher degrees of stomatal opening.
[0157] The determined plant growth regulator capacity is preferably
inversely related to the stomatal parameter value, but can
alternatively be directly related. For example, increased
capacities can be determined for lower degrees of stomatal opening,
while lower capacities can be determined for higher degrees of
stomatal opening.
[0158] The treatment mechanism operation parameter values can be
selected based on the plant feature to be treated. For example,
more growth regulator can be applied to older leaves than to
younger leaves. Older leaves can be identified by coloration (e.g.,
wherein the older leaves are darker or have a higher brown to green
ratio), spatial location on the plant (e.g., wherein the older
leaves are located lower the plant, closer to the root system), or
identified in any other suitable manner.
[0159] The treatment mechanism operation parameter values can be
selected based on ambient environment parameters. For example, the
droplet charges can be increased in response to increased wind
speed. In another example, the droplet charge, emission pressure,
size, or composition can be adjusted based on the ambient
environment temperature and/or humidity. The treatment mechanism
operation parameter values can additionally or alternatively be
selected based on geographic area output parameter maximization. In
particular, the treatment mechanism operation parameter values can
be selected to maximize the target plant parameter value for the
plant, and/or be selected based on the effect of the treatment on
secondary plants 50, as discussed above. The treatment mechanism
operation parameter values can be selected based on the system
parameters, such as the system velocity. For example, the misting
duration can be decreased in response to increased system velocity.
In a second example, the growth regulator concentration in the
working fluid can be increased in response to increased system
velocity (e.g., due to the decreased misting duration).
Alternatively, the treatment mechanism operation parameter values
can be selected based on ambient environment parameters, such as
temperature, humidity, ambient light, or any other suitable ambient
environment parameter. For example, a first amount of growth
regulator can be applied to the plant in response to a first
ambient temperature, and a second, larger amount of growth
regulator can be applied to the plant in response to a second,
higher ambient temperature. The increased amount of growth
regulator can accommodate for and/or take advantage of the
increased internal plant rate. In another example, a first amount
of growth regulator can be applied to the plant in response to a
first ambient humidity, and a second, smaller amount of growth
regulator can be applied to the plant in response to a second,
higher ambient humidity. This can accommodate for the higher dew
point due to the higher humidity. However, the treatment mechanism
operation parameter values can be selected in any other suitable
manner.
[0160] Operating the treatment mechanism to apply the growth
regulator to the plant can additionally include mixing growth
regulator into the working fluid to form a solution. The resultant
growth regulator concentration is preferably determined based on
the operation parameters, but can alternatively be predetermined or
otherwise determined.
[0161] Operating the treatment mechanism to apply the growth
regulator can additionally include applying the growth regulator to
the same plant from a first and a second side. In a system
variation in which the system traverses along the field furrows,
the treatment is preferably applied to the plant from the first
side during a first pass along a first furrow, and applied to the
same plant from a second side during a second pass along a second
furrow. In one variation, the method includes determining the
target plant parameter value for the plant S510 in response to
plant identification from a first angle, storing the target plant
parameter, treating the plant from the first angle, and, in
response to identifying the plant a second time from a second angle
different from the first (e.g., opposing the first angle), treating
the plant from the second angle based on the target plant
parameter. Alternatively, the method can include in response to
identifying the plant a second time, selecting a second set of
operation parameters for the plant based on the first set of
operation parameters, and operating the treatment mechanism in the
application mode according to the second set of operation
parameters. However, the plant can be treated from multiple angles
in any other suitable manner. The plant is preferably identified
the second time within a threshold time period after initial plant
identification (e.g., within a time window from plant
identification from the first angle, such as within the same
operating session, within an hour, etc.), but can alternatively be
identified at any other suitable time. The plant can be identified
based on a unique identifier for the plant, such as a tag, a unique
geographic position, a unique plant pattern (e.g., stomata,
sunspots, leaf edge irregularities), or any other suitable
identifier. Alternatively, the plant can be identified a second
time, wherein the selected treatment or treatment parameters can be
substantially independent from the previously selected treatment or
treatment parameters for the plant.
[0162] In one variation, the plant feature is a set of leaves,
wherein the leaf edges, petioles, or any other suitable leaf
feature can be identified within the measurement. The leaf size and
orientation are preferably estimated based on the identified leaf
features, but can alternatively be measured (e.g., using LIDAR).
The leaves are preferably subsequently used to determine interleaf
insertion points.
[0163] The working fluid can be applied to the plant or to the
ambient environment (e.g., area surrounding or adjacent the plant).
In a first example, in response to identification of a plant (e.g.,
crop) for growth promotion, the method includes spraying the plant
with a growth-promoting working fluid. Alternatively, the method
can include spraying the area surrounding the crop with
growth-retarding or necrosing working fluid (e.g., a large amount
of fertilizer, a strong acid or base, salt, spraying the plant for
a long duration, etc.). In a second example, in response to
identification of an undesired plant for necrosis or growth
retardation (e.g., a weed), the method includes spraying the plant
with a growth-retarding or necrosing working fluid. Alternatively,
the method can include spraying the area surrounding the undesired
plant with a growth-promoting working fluid, such that the plants
surrounding the undesired plant crowd out the undesired plant.
[0164] An alternative embodiment preferably implements the above
methods in a computer-readable medium storing computer-readable
instructions. The instructions are preferably executed by
computer-executable components preferably integrated with a plant
treatment system. The plant treatment system can include a plant
identification system, output parameter optimization system, and
treatment mechanism operation parameter determination system. The
computer-readable medium may be stored on any suitable computer
readable media such as RAMs, ROMs, flash memory, EEPROMs, optical
devices (CD or DVD), hard drives, floppy drives, or any suitable
device. The computer-executable component is preferably a processor
but the instructions may alternatively or additionally be executed
by any suitable dedicated hardware device.
[0165] Although omitted for conciseness, the preferred embodiments
include every combination and permutation of the various system
components and the various method processes.
[0166] As a person skilled in the art will recognize from the
previous detailed description and from the figures and claims,
modifications and changes can be made to the preferred embodiments
of the invention without departing from the scope of this invention
defined in the following claims.
* * * * *