Estimativa da evapotranspiração de referência diária para a região de Dourados, MS, pelos métodos Hargreaves-Saminani e Camargo.

Abstract

The aim of this work was to evaluate the Hargreaves-Samani and Camargo methods to estimate daily reference evapotranspiration (ET0), in Dourados region, Mato Grosso do Sul State, Brazil. ET0 was measured by a weighing lysimeter. The estimated performance was visually and statistically evaluated. Daily ET0 estimated by Hargreaves-Samani method showed a good permormance, while Camargo method just presented regular performance, tending to underestimate ET0.