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Wheat Nitrogen Diagnostics in the Yaqui Valley

Wheat Nitrogen Diagnostics in the Yaqui Valley. OBJECTIVE. To develop diagnostic tools that will help farmers apply the optimum economic nitrogen rate in wheat. To transfer this knowledge intensive technology into farmers’ fields. 1603. 710. 814. On-farm Trials 2002-2003. 194. 250. 125.

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Wheat Nitrogen Diagnostics in the Yaqui Valley

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  1. Wheat Nitrogen Diagnostics in the Yaqui Valley

  2. OBJECTIVE • To develop diagnostic tools that will help farmers apply the optimum economic nitrogen rate in wheat. • To transfer this knowledge intensive technology into farmers’ fields.

  3. 1603 710 814

  4. On-farm Trials 2002-2003 194 250 125 250 125 125 250 142 100 125 0 0

  5. NDVI

  6. N rich Strip Area Fertilized According to the Sensor N rate Experiment

  7. Yield Potential N Deficient Area N Rich Strip NDVI = 0.31 NDVI = 0.65

  8. 246 kgN/ha 6831kg Vs 123 kgN/ha 7068kg 300N 0N No Yield Difference 0 vs 300N Manuel Lopez de Lara

  9. 300 kgN/ha Vs 180 kgN/ha No Yield Difference 300 N 0N Don Melquiades

  10. 11 tons Chicken Manure Vs. 20 tons Chicken Manure No Yield Difference Union Cajeme Insisted in 150 kg N more Over the 11 tons Chicken Manure Technical Adviser called me and asked me if I was making that recommendation Cesar Valenzuela

  11. Farmer Basal N rate N rate Experiment Sensor Rec. C.Valenzuela 135 N No response 0 L.A. Amaya 150 N No response 0 S. Dabdub 175 N No response 0 J. Castro 100 N No response 0 E. Pablos 0 N 200 N 0 M. Lopez de Lara 150N No response 0 J. Felix Sacos No response 0 E. Olea 100N Lost 0 On-farm Trials for Validation of the Sensor

  12. N Rich Strip N Rich Strip

  13. 246 kgN/ha 6831kg Vs 123 kgN/ha 7068kg 300N 0N No Yield Difference 0 vs 300N Manuel Lopez de Lara

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