GreenSeekerTM Variable Rate Applicator Equipment and Applications

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GreenSeekerTM Variable Rate ApplicatorEquipment
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
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GreenSeekerTM Sensor Light Detection and Filtering
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Sensor Function
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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 24x 24 area applying the target rate on
  85 of that area

Valve Valve 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 Controller
Power Supply
Pressure Controller
Flow Meter and Pressure Sensor
Flow Control Valve
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0.5
Visible
Near Infrared
Measure of living plant cells ability to reflect
infrared light
Reflectance ()
0.25
PhotosyntheticPotential
Plant Reflectance
0.00
450
550
650
750
850
950
1050
500
600
700
1000
900
800
Wavelength (nm)
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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 Rate
Sensor 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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IKONIS Satellite Image of a Wheat Field Near
Covington, Oklahoma
NDVI Map
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Wheat - Hennessey, Ok
NDVI Map
0.77 to 0.85 NDVI 52 to 59 lb/ac N
As Applied Map
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
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NDVI Cassidy, OK - Wheat P Strip and 2 NRich
Strips
NRichStrips
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GreenSeeker RT200
GreenSeeker RT500
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RT200 and RT 500 Specifications

• 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 lt 0.1 s

• 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

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Sensing and Treatment Scale and Strategy
30 ft by 60 ft
RT500
RT200
High Resolution Sense and Treat Strategy
Sensed Area
Treated Area
2 ft by 2 ft
Sense, Predict, and Treat Strategy
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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 manufacturers
  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

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• 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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