Estimation of Evapotranspiration ETc and Crop Coefficient Kc of Wheat, in south Nile Delta of Egypt Using integrated FAO-56 approach and remote sensing data
E. Farg; S. M. Arafat; Abd-Elwahed, Saifeldeen Mohammed; A. M. EL-Gindy;
Abstract
Crop water requirements are represented by the actual crop evapotranspiration. Estimation
of crop evapotranspiration (ETc) and crop coefficient using remote-sensing data is essential for
planning the irrigation water use in arid and semiarid regions. This study focuses on estimating the
crop coefficient (Kc) and crop evapotranspiration (ETc) using SPOT-4 satellite data integrated with
the meteorological data and FAO-56 approach. Reference evapotranspiration (ETo) were estimated
using FAO Penman-Monteith and tabled single crop coefficient values were adjusted to real values.
SPOT-4 images geometrically and radio metrically corrected were used to drive the vegetation indices
(NDVI and SAVI). Multi linear regression analysis was applied to develop the crop coefficient
(Kc) prediction equations for the different growth stages from vegetation indices. The results
showed R2 were 0.82, 0.90 and 0.97 as well as adjusted R2 were 0.80, 0.86 and 0.96 for developing,
mid-season and late-season growth stage respectively.
of crop evapotranspiration (ETc) and crop coefficient using remote-sensing data is essential for
planning the irrigation water use in arid and semiarid regions. This study focuses on estimating the
crop coefficient (Kc) and crop evapotranspiration (ETc) using SPOT-4 satellite data integrated with
the meteorological data and FAO-56 approach. Reference evapotranspiration (ETo) were estimated
using FAO Penman-Monteith and tabled single crop coefficient values were adjusted to real values.
SPOT-4 images geometrically and radio metrically corrected were used to drive the vegetation indices
(NDVI and SAVI). Multi linear regression analysis was applied to develop the crop coefficient
(Kc) prediction equations for the different growth stages from vegetation indices. The results
showed R2 were 0.82, 0.90 and 0.97 as well as adjusted R2 were 0.80, 0.86 and 0.96 for developing,
mid-season and late-season growth stage respectively.
Other data
Title | Estimation of Evapotranspiration ETc and Crop Coefficient Kc of Wheat, in south Nile Delta of Egypt Using integrated FAO-56 approach and remote sensing data | Authors | E. Farg ; S. M. Arafat ; Abd-Elwahed, Saifeldeen Mohammed ; A. M. EL-Gindy | Keywords | Actual evapotranspiration; Crop evapotranspiration; Crop coefficient; Remote sensing; Vegetation indices | Issue Date | 2012 | Source | Farg, E., S. M. Arafat, MS Abd El-Wahed, and A. M. El-Gindy. "Estimation of evapotranspiration ETc and crop coefficient Kc of wheat, in south Nile Delta of Egypt using integrated FAO-56 approach and remote sensing data." The Egyptian Journal of Remote Sensing and Space Science 15, no. 1 (2012): 83-89. | Journal | Egyptian Journal of Remote Sensing and Space Science | ISSN | 1110-9823 |
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