Water use efficiency of corn among the irrigation districts across the Duero river basin (Spain): Estimation of local crop coefficients by satellite images

Daniel Alberto Segovia-Cardozo, Leonor Rodríguez-Sinobas and Sergio Zubelzu

Agricultural Water Management, 2019, vol. 212, issue C, 241-251

Abstract: Irrigation in the Duero river basin accounts for 75% of total water resources. Nevertheless, irrigation in this area is paramount to maintain agricultural production. Within this context, this paper is aimed at assessing the water use efficiency (WUE), for the major crop (corn), among four irrigation districts (IDs) from 2014 to 2017. Since the WUE indicators base upon crop water requirements, these were calculated by estimating the reference evapotranspiration and the local crop coefficients Kc. First, they were estimated by satellite images and then, compared with the recommendation from the Regional Irrigation Advisory Service. Finally, the gross irrigation requirements were compared with the irrigation supply.

Keywords: Water use efficiency; Crop water requirements; Crop coefficient; Irrigation requirements; Remote sensing; Satellite images (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:212:y:2019:i:c:p:241-251

DOI: 10.1016/j.agwat.2018.08.042

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