Although the use of water productivity is gaining importance for evaluating good management practices, there is no standardized framework that aids the calculations. A methodology has been developed to quantify spatial variation of crop yield, evapotranspiration (ET) and water productivity (WPET) using the SEBAL algorithm and high and low resolution satellite images. SEBAL estimated ET was validated over a wheat dominated area in the Yaqui Valley, Mexico and proved to be accurate. Estimated average wheat yields of 5.5 ton ha−1 were well within the range of measured yields reported in the literature. Area average WPET was 1.37 kg m−3 and could be considered high compared to other irrigated systems around the world It is concluded that the proposed methodology is accurate and that better knowledge of the spatial variation of WP provides valuable information for regional water managers to seek local solutions for boosting the productivity of agricultural water use by means of sharing and exchanging good management practices.
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23 August 2006
EARTH OBSERVATION FOR VEGETATION MONITORING AND WATER MANAGEMENT
10-11 November 2005
Naples (Italy)
Research Article|
August 23 2006
SEBAL For Detecting Spatial Variation Of Water Productivity For Wheat In The Yaqui Valley, Mexico
S. J. Zwart;
S. J. Zwart
1WaterWatch, Generaal Foulkesweg 28A, 6703 BS Wageningen, The Netherlands
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W. G. M. Bastiaanssen;
W. G. M. Bastiaanssen
1WaterWatch, Generaal Foulkesweg 28A, 6703 BS Wageningen, The Netherlands
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J. Garatuza‐Payan;
J. Garatuza‐Payan
2Instituto Tecnólogico de Sonora (ITSON), 5 de Febrero 818 Sur, Cd. Obregón, Sonora, Mexico
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C. J. Watts
C. J. Watts
3University of Sonora, Blvd. Encinas y Rosales, Hermosillo, Sonora 83000, Mexico
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AIP Conf. Proc. 852, 154–161 (2006)
Citation
S. J. Zwart, W. G. M. Bastiaanssen, J. Garatuza‐Payan, C. J. Watts; SEBAL For Detecting Spatial Variation Of Water Productivity For Wheat In The Yaqui Valley, Mexico. AIP Conf. Proc. 23 August 2006; 852 (1): 154–161. https://doi.org/10.1063/1.2349339
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