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Precision Ag in Oklahoma Wheat Production

Precision Ag in Oklahoma Wheat Production. By Brennan Leighton. The early days. Conventional till Plow the prairie Drought = Crop Failure Bare soil + wind = Dust Bowl. No till. Made possible by the invention of herbicides Weed control in fallow system Weedseeker

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Precision Ag in Oklahoma Wheat Production

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  1. Precision Ag in Oklahoma Wheat Production By Brennan Leighton

  2. The early days • Conventional till • Plow the prairie • Drought = Crop Failure • Bare soil + wind = Dust Bowl

  3. No till • Made possible by the invention of herbicides • Weed control in fallow system • Weedseeker • GPS, GIS, Auto steer, Overlapping swath control

  4. Soil testing • Composite 15-20 six inch cores mixed together per management zone • Send to SWFAL • Correct Ph with lime • Fertilize P and K according to % sufficiency • Nitrogen need is determined by expected yield • Apply ½ Nitrogen pre-plant and ½ to be determined mid season using Greenseeker and N rich strip or N ramp • Can use Veris rig to map soil EC, moisture content, and soil texture.

  5. How much N to apply on N rich strip?

  6. N Ramp

  7. Nitrogen Rich Strip

  8. Sensor-Based Nitrogen Rate Calculator • http://www.soiltesting.okstate.edu/SBNRC/SBNRC.php • Can also be used for predicting yield, profit, loss

  9. GreenSeeker on the History Channel • http://nue.okstate.edu/GreenSeeker_Results.htm

  10. Precision seedingP2070 Precision Hoe Drill • Covers 70 feet • Can adjust individual openers seeding depth by 1/8in increments from 0-2in • Can monitor down pressure • Can maintain fertilizer/seed separation 1 7/8 inch lateral separation and 7/8 in vertical separation with dual shoot openers

  11. Seed variety • Hybrid seed varietys can be very important for maximum yields and drought tolerance

  12. Combine technologies • Auto steer • GPS, GIS • Yield monitors • Mass flow sensors • Moisture sensors • GPS • Ground speed sensor • Programmed harvest width

  13. Yield maps

  14. Questions?

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