ESTIMATIVA DA DEMANDA DE ÁGUA DA CULTURA DA CANA-DE-AÇÚCAR IRRIGADA UTILIZANDO SENSORIAMENTO REMOTO
DOI:
https://doi.org/10.15809/irriga.2021v1n4p678-686Abstract
The present work aimed to estimate the water demands of the sugarcane crop irrigated by the central pivot system, through the application of the SAFER (Simple Algorithm for Evapotranspiration Retrieving) algorithm. The study was carried out in a commercial area, in the city of Nova Independência, SP, comprising the 2020/21 harvest. Images from the Landsat 8 and Sentinel 2 satellites and agrometeorological data were used to estimate the ETa/ETo ratio and actual evapotranspiration (ETa). The highest values of ETa observed were between 3.4 and 4.4 mm day-1, while the highest values of the ETa/ETo ratio were 0.7 and 0.8, and despite similar behavior to similar works, they are smaller than those indicated in the literature.
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