Wheat Nitrogen Diagnostics

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Wheat Nitrogen Diagnostics in the Yaqui Valley
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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.

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1603
710
814
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On-farm Trials 2002-2003
194
250
125
125
125
250
250
142
100
125
0
0
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NDVI
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N rich Strip
Area Fertilized According to the Sensor
N rate Experiment
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Yield Potential
N Deficient Area
N Rich Strip
NDVI 0.31
NDVI 0.65
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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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300 kgN/ha Vs 180 kgN/ha No Yield Difference
300 N
0N
Don Melquiades
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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
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On-farm Trials for Validation of the Sensor
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N Rich Strip
N Rich Strip
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246 kgN/ha 6831kg Vs 123 kgN/ha 7068kg
300N
0N
No Yield Difference 0 vs 300N
Manuel Lopez de Lara