VRT – Variable Rate Technology A Look Back and Into the...
Transcript of VRT – Variable Rate Technology A Look Back and Into the...
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VRT – Variable Rate Technology A Look Back and Into the Future
K e n t S h a n n o nN a t u r a l R e s o u r c e E n g i n e e r
B o o n e C o u n t y
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The State of Precision Ag
• Technology in 20 years (at least for me)
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Technologies for Soil Sampling
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Technologies for Soil Sampling
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The Basis Behind VR Fertilizer
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The Basis Behind VR Fertilizer
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Proposed Soil Test P Recommendations
Equation Output : P Rec for CornIf [Soil P1] < 45.00 Then
RESULT= ( [Corn Yield Goal] * 0.450 ) + ( 110.00 * ( 45.00 ^ 0.500 - ( [Soil P1] * 1.000 ) ^ 0.500 ) ) / [Build Years]
Else If [Soil P1] >= 45.00 Then
RESULT= [Corn Yield Goal] * 0.450 * ( 1.000 - ( 2.000 * ( ( 100.00 * ( ( [Soil P1] * 1.000 ) / 45.00 ) ) -100.00 ) ) / 100.00 )
Equation Output : P Rec for CornIf [Soil P1] < 30.00 Then
RESULT= ( [Corn Yield Goal] * 0.320 ) + ( ( 4.700 * ( 30.00 - [Soil P1] ) ) / [Build Years] )
Else If [Soil P1] >= 30.00 Then
RESULT= [Corn Yield Goal] * 0.320 * ( 1.000 - ( 2.000 * ( ( [Soil P1] / 30.00 ) - 1.000 ) ) )
Current MU Rec
Proposed MU Rec
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Effect On ChangingSoil Test P Critical ValueFrom 45 to 30 lbs/acre
Change in Total Amount of P
529 lbsor 16 lbs/acre
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VR Fertilizer Recommendation
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Variable RateFertilizer
Technology
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VR Fertilizer Application
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1939 1962 1968 1995
Historical Aerial Photos from the County FSA Office Note the farmstead and two ponds prior to 1995
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Only 95 ton of lime was appliedinstead of 294 ton if 2 ton/acre was applied as a blanket rate
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VR Lime Application
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VRT to the Next Step - Soil Sensing
Veris MSP3 ‐ Soil Mapping
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https://encirca.services.pioneer.com/umbraco/images/encirca‐yield‐targets.jpg
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Example On‐Farm Experiment –Development of Management Zones
• Use of Soil Electrical Conductivity and Past Years’ Yield Maps
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Example On‐Farm Experiment –Development of Management Zones
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Example On‐Farm Experiment –Development of Management Zones
ProductivityZone
Soil EC(mS m-1)
Nitrogen Rate
(lbs/acre)
Seeding Rate
(seeds/acre)Low 45-135 80 22,000
Medium 28-45 120 28,000
High 6-28 160 34,000
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VR Planting
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VR Planting
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Example On‐Farm Experiment –Implementation of Experiment
Corn was planted using a16-row planter. Planter was equipped with a variable rate drives to control each half of the planter. This allowed the producer to plant his half of the planter with variable seeding rate and the other half to his usual whole field rate of 28,000 seeds/acre.
GPS data was collected on the variable rate side of the planter by mounting the GPS antenna in the middle of that half of the planter.
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Results and Discussion – Yield Maps
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Results and Discussion – Yield Summary
Productivity Zone Fixed-rate seeding Variable-rate seeding
Low 115.1 123.1
Medium 141.1 144.8
High 144.5 149.5
Field Average 137.1 143.6
Yield in bushels per acre
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VR Hybrids
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Soil Sensors Continue to Evolve
Precision Planting's new SmartFirmer
• Measures soil organic matter
• Measures soil moisture
• Maps and controls• VR seeding on‐the‐go
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In‐Season Variable‐Rate Nitrogen Application
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Greenness of Corn at Side Dress6/3/04 – Miami, MO
Reference strip with 150 lbs N on 5/6
Target strip for side dress Average of 175 lbs N applied
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Greenness of Corn at Side Dress6/4/04 – Emma, MO
Reference strip with 180 lbs N on 4/19
Target strip for side dress Average of 90 lbs N applied 6/4
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Sensor-Based Nitrogen Application
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Outcomes from the sensor demos
• 55 replicated on‐farm trials• Increased corn yield by 2 bushels/acre• Reduced N use by 14 pounds/acre• Increased partial profit by $17/acre• Reduced ‘surplus N’ by 27%• Based on Missouri interpretations for sensors• Works with all N forms, placements
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Tools for Managing Nitrogen
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Tools for Managing Nitrogen
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Utilizing Drone Technology for VRT
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Turning Drone Image into N Application Map
utilizing
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Turning Drone Image into N Application Map
utilizing
Treatment Sidedress N Rate –lbs/acre
Corn Yield –bu/acre
Producer 40 207Nvision 48 209OptRx 48 206
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Future of Drones / Sensor Technology
DJI Phantom 4 with Sentera Single NIR Sensor and Standard RGB Camera
4 Band SensorGreen, Red, Red‐Edge, NIR
SunlightSensor
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Future of Drones / Sensor Technology
From DJI Phantom 3 with Sentera Single NIR Sensor and Standard RGB Camera
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For more information contact:
Kent ShannonNatural Resource Engineer
University of Missouri Extension - Boone Countyphone: 573-445-9792
email: [email protected]