Wheat Nitrogen Diagnostics

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Presentation transcript:

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 194 250 125 250 125 125 250 142 100 125

NDVI

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

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

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

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

Over the 11 tons Chicken Manure Technical Adviser called me 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

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

N Rich Strip N Rich Strip

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