Brian Arnall, estudiante de Maestria

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Relacion entre NDVI medido por surco versus
contra surco
Brian Arnall, estudiante de Maestria
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Nitrogen Rich Strip
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Nitrogen Rich Strip
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Response Indexvariable from year to year in the
same field
2004
1995
Long term N-P-K Experiments(1969-2004) Dr. Billy
Tucker
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Response to Fertilizer NLong-Term Wheat
ExperimentLahoma, OK 1970-2003
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Indice de Respuesta
min. 1.0max. 4.1prom. 1.7
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Response to Fertilizer N
Response to Fertilizer N
Long-Term Corn Experiment
Mead, NE, 1969
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1983
Mead, NE, 1969
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1983
Prof. R.A. Olson
Prof. R.A. Olson
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Response Index NDVI, N Rich Strip NDVI,
Farmer Practice
Residual NLegume creditsMineralizationManureN
itrate in rainfall and/or irrigation water
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Indice de Respuesta NDVI, Franja Rica con N
(FRN) NDVI, Practica del Agricultor Sensor
GreenSeeker Estado F5-F7
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Integración de componentes
Rendimiento Predicho con fertilizacion(YPN)
RI
Indice de Respuesta 0.75/0.57 1.31
N-no limitado
Practica del agricultor
Fecha de siembra
Rendimiento predicho sin fertilizacion (YP0)
Dias desde la siembra
NDVI (fecha de medida)
INSEY (NDVI/dias desde la siembra, GDDgt0)YPN
YP0 RIDosis de Fertilizacion (N asimilado
YPN N asimilado YP0)/0.7
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Procedimiento
Resultados Rend. Potencial sin N, Rend.
Potencial con N, dosis de N requerido
Entrar Rendimiento maximo para el area, fecha de
siembra sensor
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Wheat grain yield response to fertilizer N
applied using variable N rate strategies and
fixed preplant rates, Chickasha, OK,
2004. Trt Preplant Topdress Total
Method Grain NUE Gross N Rate N Rate N
Rate Yield Revenue kg/ha kg/ha kg/ha kg/ha
/ha 1 0 0 0 - 1510 - 194 2 135 0 135 All N
pre 2631 20 264 3 0 27 27 Var. NFOA 2152 57 262 4
50 12 62 Var. NFOA 2377 32 271 5 0 29 29 Flat
NFOA 1855 28 222 6 50 13 63 Flat NFOA 2647 42 305
41/ha 7 0 100 100 Flat Topdress 1781 6 174 Se
nsor CV at F5 12 (NDVI 0.3) __________________
_________________________________________ NFOA
nitrogen fertilization optimization algorithm
Flat rate fertilizer applied uniformly to the
entire treatmentGross Revenue using 52 USD /ton
of wheat and 0.62 per kg N.
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Wheat grain yield response to fertilizer N
applied using variable N rate strategies and
fixed preplant rates, Efaw, OK,
2004. Trt Preplant Topdress Total
Method Grain NUE Gross N Rate N Rate N
Rate Yield Revenue kg/ha kg/ha kg/ha kg/ha
/ha 1 0 0 0 - 2105 - 270 2 135 0 135 All N
pre 2712 11 274 3 0 25 25 Var. NFOA 2724 60 337
63/ha 4 50 9 59 Var. NFOA 2693 23 313 5 0 34 34
Flat NFOA 2587 34 314 6 50 16 66 Flat
NFOA 2724 22 314Sensor CV at F5 16 (NDVI
0.4) _____________________________________________
_______ NFOA nitrogen fertilization
optimization algorithm Flat rate fertilizer
applied uniformly to the entire treatment Gross
Revenue using 52 USD per ton of wheat and 0.62
per kg N.
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Wheat grain yield response to fertilizer N
applied using variable N rate strategies and
fixed preplant rates, Lake Carl Blackwell, OK,
2004. Trt Preplant Topdress Total
Method Grain NUE Gross N Rate N Rate N
Rate Yield Revenue kg/ha kg/ha kg/ha kg/ha
/ha 1 0 0 0 - 3297 - 424 2 135 0 135 All N
pre 4065 13 448 3 0 14 14 Var. NFOA 3650 57 461 4
50 11 61 Var. NFOA 4155 33 500 5 0 22 22 Flat
NFOA 3519 26 440 6 50 14 64 Flat NFOA 4215 33 506
58/ha 7 50 34 84 Flat pre/top 4099 16 481Sen
sor CV at F5 22 (NDVI 0.5) ___________________
_______________________________________ NFOA
nitrogen fertilization optimization algorithm
Flat rate fertilizer applied uniformly to the
entire treatment Gross Revenue using 52 USD per
ton of wheat and 0.62 per kg N. obtained from
long-term trial 601 at LCB.
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Calibration Stamp2002-2004
Ramped N Rich Strip2005
Agron. J. 2005 97 338-342
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Sello de Calibración
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Coeficiente de variacion
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Mas variabilidad sin N
Menos variabilidad con N
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Utilizacion de informacion estadisticaCoeficiente
de variacion desviacion estandar/media
NDVI 0.2CV ?
NDVI 0.4CV ?
NDVI 0.8CV ?
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NDVI 0.4CV ?
NDVI 0.4CV ?
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NDVI 0.4CV ?
NDVI 0.4CV ?
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Procedimiento Colectar NDVI del la Franja Rica
(N) o FRN, y de la practica del agricultor (notar
que el CV tambien aparece)
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CanadaArgentinaMexico
Optical Sensing Nitrogen Management Group
2005 International Corn Trials 2006 International
Corn Trials Planned
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Corn

• Sense and treat every 1-4 plants and fertilize
  accordingly
• Rates, 0-120 lb N/ac in increments of 14 lb

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• NDVI por planta (cada 0.5 cm) y medicion de
  altura utilizando ultra sonido
• Por planta NDVI
• Por planta CV

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Kent Martin, estudiante de Maestria
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GreenSeekerTM Variable Applicator Equipment and
Applications

• How the GreenSeekerTM works
• NDVI
• GreenSeekerTM RT200 RT500
• Corn and other applications

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• Sense and treat every 2 plants

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Questions
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