Estimation of evapotranspiration of forage corn supported with remote sensing and in situ measurements.

Authors

  • Arturo Reyes González INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES,AGRÍCOLAS Y PECUARIAS (INIFAP)
  • David Guadalupe Reta Sánchez INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES, AGRÍCOLAS Y PECUARIAS (INIFAP)
  • Juan Isidro Sánchez Duarte INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES, AGRÍCOLAS Y PECUARIAS (INIFAP)
  • Esmeralda Ochoa Martínez INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES, AGRÍCOLAS Y PECUARIAS (INIFAP)
  • Karla Rodríguez Hernández INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES, AGRÍCOLAS Y PECUARIAS (INIFAP)
  • Pablo Preciado Rangel INSTITUTO TECNOLÓGICO DE TORREÓN

DOI:

https://doi.org/10.28940/terra.v37i3.485

Keywords:

crop coeff icient, GreenSeeker, satellite images, vegetation index

Abstract

Irrigated agriculture requires better estimates of crop water demand. The aim of this study was to estimate the evapotranspiration (ETc) in forage corn through vegetation indices obtained in situ and estimated with remote sensing in the Comarca Lagunera, Mexico. The research was carried out in 2011 and 2012 in four 900 m2 plots irrigated with a subsurface drip irrigation system. Normalized Difference Vegetation Index (NDVI) and crop coeff icient (Kc) during crop development were determined. The initial, maximum and f inal NDVI values were 0.13, 0.79 and 0.63 for both methods and in both cycles. The maximum Kc values were obtained 54 and 48 days after sowing (DDS) with GreenSeeker, and at 61 and 59 DDS with satellite images in 2011 and 2012, respectively. The results showed a good relationship between ETc estimated in situ and ETc estimated with remote sensing (r = 0.98) for both years. Although the variation of ETc using both methods was 1.2 mm day‑1, early in the cycle and 7.4 mm day-1 to flowering start-milky grains. Water needs of forage corn were estimated with similar precision using remote sensing and in situ measurements. Therefore, both methods can be used to improve irrigation scheduling and preserve water resources in agriculture.

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Author Biographies

Arturo Reyes González, INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES,AGRÍCOLAS Y PECUARIAS (INIFAP)

Ingenieria de Riego

David Guadalupe Reta Sánchez, INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES, AGRÍCOLAS Y PECUARIAS (INIFAP)

FITOTECNIA

Juan Isidro Sánchez Duarte, INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES, AGRÍCOLAS Y PECUARIAS (INIFAP)

FORRAJES

Esmeralda Ochoa Martínez, INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES, AGRÍCOLAS Y PECUARIAS (INIFAP)

SUELOS

Karla Rodríguez Hernández, INSTITUTO NACIONAL DE INVESTIGACIONES FORESTALES, AGRÍCOLAS Y PECUARIAS (INIFAP)

FORRAJES

Pablo Preciado Rangel, INSTITUTO TECNOLÓGICO DE TORREÓN

NUTRICIÓN VEGETAL

Additional Files

Published

2019-07-15

How to Cite

Reyes González, A., Reta Sánchez, D. G., Sánchez Duarte, J. I., Ochoa Martínez, E., Rodríguez Hernández, K., & Preciado Rangel, P. (2019). Estimation of evapotranspiration of forage corn supported with remote sensing and in situ measurements. REVISTA TERRA LATINOAMERICANA, 37(3), 279–290. https://doi.org/10.28940/terra.v37i3.485

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