Determination of the crop coefficient (Kc) for common bean (Phaseolus vulgaris L.) in Campos dos Goytacazes, RJ

Revista Brasileira de Engenharia Agrícola e Ambiental

Gottardo, Romildo D.²  Sugawara, Márcio T.²  Mendonça, José C.¹  Peçanha, Anderson L.²  Bernardo, Salassier²  Sousa, Elias F. de² 

[1]UENF, Campos dos Goytacazes

[2]UENF

关键词: crop water requirement;    irrigation;    evapotranspiration    INTRODUÇÃO A evapotranspiração de qualquer cultura é uma das principais informações necessárias para o manejo racional da irrigação e para fins de planejamento do uso da água;   

DOI  :  10.1590/S1415-43662007000500004

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The evapotranspiration of a crop is one of the main information required for proper irrigation management and to develop an efficient water usage plan. Among the methods to estimate the amount of water that is consumed by plants, the use of crop coefficients (Kc), associated with estimates of the reference evapotranspiration (ETo), stands as one of the most promising. This work aimed to deterime the values of Kc for different phenological phases of common bean plants (Phaseolus vulgaris L.) of the cultivar UENF-47. Determination of Kc values was performed using a weighing lisimeter and results were compared with values obtained through the FAO 56 standard. Results showed that the adjustment equations proposed by Allen et al. (1998) were adequate for fitting the values of Kc obtained in this experiment. It has been shown that the crop coefficients for phenological phases 3 and 4 proposed by Allen et al. (1998) are adequate for the conditions of crop growth observed in Campos dos Goytacazes, Rio de Janeiro state, Brazil, during the autumn/winter period.

【 授权许可】

CC BY-NC