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Systems Approach to Nitrogen Management

Systems Approach to Nitrogen Management. Precision Nutrient Management Extension Specialist D. Brian Arnall. About myself. My Family Upbringing was not Ag. Ok State University 70 % Extension 30 % Teaching 60 % Research

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Systems Approach to Nitrogen Management

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  1. Systems Approach to Nitrogen Management Precision Nutrient Management Extension SpecialistD. Brian Arnall

  2. About myself • My Family • Upbringing was not Ag. • Ok State University • 70% Extension • 30% Teaching • 60% Research • Responsibilities' described as: If it is a commercial crop that receives commercial fertilize, you handle both

  3. My Work • Extension: • From Liming to Variable Rate Applications • Teaching: • Soil Nutrient Management • Precision Agriculture • Crops: • Wheat, Corn, Sorghums, Alfalfa, Canola, Sesame, Cotton • Research: focus on appliedresearch • Product/deliverable oriented

  4. Research • Cross Discipline: 13 PSS, 8 DASNR • N application methods and products • Sensor based N rate technologies • Large scale • Sensor development and advancement • Expansion into other crops • NUE improvement in wheat Breeding • Fertilizer Management and Weed control • N2O emission reduction • P use by wheat • Precision Technologies in Horticulture

  5. NUE in the Midwest • Nitrogen losses from agricultural landscapes in the Midwestern United States • Production and Environment • Close ties to Chesapeake Bay Counterparts • Mississippi River + Corn + Tile Drainage =Minnesota is a Target • Commodity groups know it. • The Battle: Improve NUE& Improve Yield

  6. NASS • 125 lbs N/ac over 6.7 million acres • .65 lbs N /bu • .75 assuming 50% following beans • 420,000 tons of N applied. • 08 Randall & Vetch 51-72%NUE • Increase NUE by 1% from 62.5 to 63.5 • 4000 tons N • $4 million (@.5) : $.54 / ac • 9 million Bushels : 1.2 bu/ac

  7. Systems Approach • Systems approach is a result of my Extension Experience • Not all gains are made with new tech. • Large gains possible from small things • Education on interaction’s increases adoption

  8. To Begin • Start with No-Assumptions • Initiation of a few studies • Spend time (weeks/months) with Producers • What is the current system/situation • Where do they see the future • Understand the Producer and Educator mentality

  9. Research Areas • Timing and Method • Time with Producers and Educators • Cropping Systems • Rotations • Cover Crops • Time with Peers

  10. Research Areas • Nitrogen sources and ect. • As needed • Currently active • Due to Extension Responsibility • Respect from Clientele

  11. Research Areas • In-season cues KFGO.com Agsource.crinet.com

  12. Research Areas • Resolution of application area • Driven by Producer and Landscape

  13. Research Areas • In-Season Sensors • Four Keys to Algorithm (Stanford Equation) • Yield Prediction • Via Sensor • Responsiveness • Via N-Rich Strip • Nitrogen Use Efficiency • Via BGE • N content in grain or forage • Via the Book

  14. Ties to Engineers • Close ties to those who can design and build are important.

  15. UM Expectations • Potential • Products • Impacts

  16. What Can I Bring • Experience with Fertilizer Check-off • Product Based Approach • New Perspective • Team oriented • Visibility • People

  17. Thank you!!! www.extensionnews.okstate.edu Brian Arnall 373 Ag Hall 405-744-1722 b.arnall@okstate.edu Presentations available @ www.npk.okstate.edu Twitter: @OSU_NPKFacebook.com/OSUNPK YouTube Channel: OSUNPK

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