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Avaliação da evapotranspiração de referência na região de Seropédica- RJ, utilizando lisímetro de pesagem e modelos matemáticos

2009; UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; Volume: 4; Issue: 2 Linguagem: Inglês

10.5039/agraria.v4i2a13

ISSN

1981-1160

Autores

Vinicius Rios Barros, A.P. Souza, D.C. Fonseca, Leonardo Batista Duarte da Silva,

Tópico(s)

Environmental and biological studies

Resumo

The present study aimed to evaluate the estimate of reference evapotranspiration (ETo) for the region of Seropédica, RJ, correlating measures obtained with weighing lysimeter and Penman-Monteith - FAO 56 (PMF), Hargreaves-Samani (HS), Camargo (CA), Priestley-Taylor (PT), Makking (MA) and Pan Class A (PCA) methods. The values of ETo estimated by PMF, PT and MA were well correlated to those determined by the weighing lysimeter, whereas the HS and CA methods showed unsatisfactory adjustment with the lysimeter data. The estimated mistakes from the adjusted methods for the region of Seropédica are acceptable for use in design and management irrigation systems. Another interesting alternative is the use of the Pan Class A method, due to the feasible handling and low cost, so that it can be installed near the field.

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