REFERENCE EVAPOTRANSPIRATION AND CROP COEFFICIENT OF CHILI PEPPER IN THE AGRESTE ALAGOANO

Knowledge of crop water requirements is essential in the management of irrigation. With this the objective of this study was to determine the reference evapotranspiration and the crop coefficient for chilli pepper culture using lysimeter drainage in greenhouse and field. Six drainage lysimeters were...

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Published inRevista brasileira de agricultura irrigada Vol. 10; no. 5; p. 883
Main Authors dos Santos, Célia Silva, dos Santos, Daniella Pereira, de Oliveira, Wanderson José, da Silva, Paulo Ferreira, Lins dos Santos, Marcio Aurélio, Pereira Brito Fontenele, Angela Jessika
Format Journal Article
LanguageEnglish
Published Fortaleza Instituto de Pesquisa e Inovação na Agricultura Irrigada - INOVAGRI 01.09.2016
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Summary:Knowledge of crop water requirements is essential in the management of irrigation. With this the objective of this study was to determine the reference evapotranspiration and the crop coefficient for chilli pepper culture using lysimeter drainage in greenhouse and field. Six drainage lysimeters were installed in two areas, from february to may 2013 on the campus of the Federal University of Alagoas. The crop coefficient was determined by the ratio between crop evapotranspiration and reference evapotranspiration, being the reference evapotranspiration estimated by the methods of Penman-Montheith (FAO-56) and Hargreaves-Samani and the crop evapotranspiration with drainage lysimeters. The Hargreaves-Samani method underestimates the reference evapotranspiration and its use must be made fit to the equation obtained in this study. The determination of crop coefficient for Hargreaves-Samani method presented underestimated results in two areas. Can be adopt the crop coefficient determined for the management in chilli pepper irrigation for Arapiraca-AL.
ISSN:1982-7679