GreenSeeker TM Variable Rate Applicator Equipment and Applications
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Transcript of GreenSeeker TM Variable Rate Applicator Equipment and Applications
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GreenSeekerTM Variable Rate Applicator
Equipment and Applications
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GreenSeekerTM Variable Applicator: Equipment and Applications
• How the GreenSeekerTM works
• NDVI• GreenSeekerTM RT200
& RT500• Corn and other
applications
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Sensor-BasedNitrogen Management
Variable RateNozzle System
Directionof Travel
Computer andSensor
Assembly
Decision MakingAnd Agronomic Strategy
Plant
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GreenSeekerTM Sensor Light Detection and Filtering
Detection ofReflected
NIR and RED+Sun
Target
NIR and REDModulated
Illumination
Direction
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Sensor Function
Lightgeneration
Light signal
Lightdetection
Valve settingsCalculate NDVILookup valve settingApply valve settingSend data to UI
“Sensor”Valves
andNozzles
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GREENSEEKERTM Applicator
• Sense and treat each 2 ft by 2 ft area
• Apply one of seven fertilizer rates based on the crops yield potential
• Accomplish this while driving 15 mph
• Operate day or night
• Provide the capability to detect and treat other plant problems
• Record and georeference sensor data for GIS analysis
• Sense and spot spray weeds (current Patchen technology)
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Tri-valve Set for Varying Rate• 8 Stepped rates
– OFF to 7x
• Treats 24”x 24” area applying the target rate on 85% of that area
Valve Rate
1x 2x 4x Total
0 0 0 0
1 0 0 1
0 2 0 2
1 2 0 3
0 0 4 4
1 0 4 5
0 2 4 6
1 2 4 7
1x 2x 4x
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User Interface/Central Computer
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Flow ControllerPower Supply
Pressure Controller
Flow Control Valve
Flow Meter and Pressure Sensor
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Wavelength (nm)
Ref
lect
ance
(%
)R
efle
ctan
ce
(%)
0.25
0.5VisibleVisible Near InfraredNear Infrared
450 550 650 750 850 950 1050500 600 700 1000900800
0.00
Plant ReflectancePhotosyntheticPotential
Measure of living plant cell’s ability to reflect infrared light
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Normalized Difference Vegetative Index - NDVI
• Calculated from the red and near-infrared bands
• Equivalent to a plant physical examination
• Correlated with:– Plant biomass– Crop yield– Plant nitrogen– Plant chlorophyll– Water stress– Plant diseases– Insect damage
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NRich Strip for Determining Benefit of Added Fertilizer
NRich Strip
Field RateSensor data mapped and images vectorized with SST “Toolbox” GIS software
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IKONIS Satellite
Image of a Wheat Field
Near Covington,
Oklahoma
NDVI Image of the NRich Strip
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Bottom Formerly in Alfalfa
Eroded Hillside
N-Rich 140 lb/acN-Rich 140 lb/ac
Farm Rate 70 lb/acFarm Rate 70 lb/ac
44 bu/ac farm 44 bu/ac farm
Alfalfa Field Yield Alfalfa Field Yield bu/acbu/ac
IKONIS Satellite
Image of a Wheat Field
Near Covington, Oklahoma
NDVI Map
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Wheat - Hennessey, Ok
NDVI Map
As Applied Map
0.77 to 0.85 NDVI &
52 to 59 lb/ac N
0.2 to 0. 3 NDVI &
10 to 17 lb/ac
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IKONIS False Color Imagery Cassidy, OK P Strip and 2 NRich Strips
NRich Strips
No P Strip
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NDVI Cassidy, OK - Wheat P Strip and 2 NRich Strips
No P Strip NRich
Strips
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GreenSeeker RT500
GreenSeeker RT200
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RT200 and RT 500 Specifications
• Estimated Price $15,000 for 60 ft applicator
• Senses and treats boom width by 20 to 30 feet
• Utilizes existing variable rate sprayer controllers and valves
• Combination Sense and Treat, and Sense, Predict, and Treat strategies
• Reaction time limited by existing controller and valves
• Estimated Price $60,000 for 60 ft applicator
• Senses and treats each 2 ft by 2 ft area
• Uses NTech high speed and resolution controller and valves
• Sense and Treat strategy
• Reaction time < 0.1 s
RT200 RT500
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Sensing and Treatment Scale and Strategy
2 ft by 2 ft
30 ft by 60 ft
Sensed Area
Treated Area
Sense, Predict, and Treat StrategySense, Predict, and Treat Strategy
High Resolution Sense and Treat Strategy
RT200 RT500
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Sensing and
Treatment Scale
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RT200 and RT 500 Specifications
• 6 sensors on 60+ ft boom• Can readily be mated with
existing dry fertilizer and anhydrous ammonia applicators
• Fast installation with minimal modifications
• System intended for fertilizer only
• 30 sensor on 60 ft boom• Existing dry fertilizer
applicators cannot be used with this system
• System custom installed on each manufacturer’s sprayer /boom
• Can detect and spray weeds in fallow/no-till as well as apply fertilizer
• System can be used for other crops and materials
RT200 RT500
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•Sense and treat every 2 plants•Sense and treat every 2 plants
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Hagie Sprayer - Corn
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Weed Spraying with GreenSeeker Applicator
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GreenSeekerTM N-Fertilizer Handheld Optical Sensor
• The same active lighting optical sensor used on the variable rate fertilizer applicator
• Optically measures plant biomass, total nitrogen in the crop, and plant stress
• Can sample scan a wheat field (or other crop)
• Data can use to calculated response index for added nitrogen fertilizer
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Questions
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