Wheat Nitrogen Diagnostics in the Yaqui Valley
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Wheat Nitrogen Diagnostics in the Yaqui Valley
description
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. - PowerPoint PPT Presentation
Transcript of Wheat Nitrogen Diagnostics in the Yaqui Valley
Wheat Nitrogen Diagnosticsin 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.
On-farm Nitrogen x Variety Trials Y00-01
Location (Block)
Gra
in y
ield
(kg
/ha
) a
t 1
2%
mo
istu
re
4000
5000
6000
7000
8000 0 125 F 125 N 250
1603 710 814
On Farm Trials Year 2001-2002
Location
Gra
in y
ield
at 1
2%
moi
stu
re (
kg/h
a)
4500
5000
5500
6000
6500
7000
7500
75-0-25 125 kgN/ha0-33-66 125 kgN/ha 0-33-33 250 kgN/ha 0 kgN/ha
Block 612 Block 812
2000300040005000600070008000
1 2 3 4 5 6 7 8 9 10 11 12 13 14
N rate (kgN/ha)
Gra
in Y
ield
(kg/
ha)
194
142 250
100 125
125
125125
250
250
00
On-farm Trials 2002-2003
NDVI
N richStrip
N rate Experiment
Area Fertilized According to the Sensor
N Rich Strip N Deficient Area
NDVI = 0.65 NDVI = 0.31
Yield Potential
300N 0N
246 kgN/ha6831kg
Vs123 kgN/ha
7068kg
Manuel Lopez de Lara
No YieldDifference0 vs 300N
300 N 0N
Don Melquiades
300 kgN/haVs
180 kgN/ha
No Yield Difference
Cesar Valenzuela
11 tons Chicken ManureVs.
20 tons Chicken Manure
No Yield Difference
Union Cajeme
Insisted in 150 kg N moreOver the 11 tons Chicken Manure
Technical Adviser called me and asked me if I was making
that recommendation
Farmer Basal N rate N rate Experiment
SensorRec.
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 theSensor
N RichStrip
N RichStrip
300N 0N
246 kgN/ha6831kg
Vs123 kgN/ha
7068kg
Manuel Lopez de Lara
No YieldDifference0 vs 300N
