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Soil water availability for drip-irrigated common bean crop

ABSTRACT Minimum limits of soil water storage should be established for the irrigation management of crops, in order to satisfactorily provide water to plants. This study aimed to define the soil water availability factor (f factor) that provides the maximum agronomic yield and maximum water-use eff...

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Published in:Pesquisa agropecuária tropical 2020, Vol.50, p.e57367
Main Authors: Santos, Edson Fagne dos, Santos, Silvanio Rodrigues dos, Carvalho, Abner José de, Aspiazu, Ignácio, Oliveira, Polyanna Mara de
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Language:English
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Summary:ABSTRACT Minimum limits of soil water storage should be established for the irrigation management of crops, in order to satisfactorily provide water to plants. This study aimed to define the soil water availability factor (f factor) that provides the maximum agronomic yield and maximum water-use efficiency for drip-irrigated common bean cultivars. The experiment was carried out in a randomized block design, with four replications. The treatments were arranged in split plots, with the plots consisting of f factors (0.20, 0.35, 0.50, 0.65 and 0.80) and subplots consisting of common bean cultivars (BRS Pérola and BRS Estilo). The use of f factors between 0.30 and 0.35 is recommended for common bean crops to obtain the maximum agronomic yield and maximum water-use efficiency. The BRS Estilo cultivar presents a water-use efficiency 16 % higher than the BRS Pérola. RESUMO Limites mínimos de armazenamento de água no solo devem ser estabelecidos para o manejo de irrigação das culturas, a fim de fornecer água às plantas de maneira satisfatória. Objetivou-se definir o fator de disponibilidade de água no solo (fator f ) que proporcione o máximo rendimento agronômico e a máxima eficiência no uso de água de feijoeiro-comum irrigado por gotejamento. O experimento foi conduzido em delineamento de blocos ao acaso, com quatro repetições. Os tratamentos foram arranjados em esquema de parcelas subdivididas, sendo as parcelas compostas pelos fatores f (0,20; 0,35; 0,50; 0,65; e 0,80) e as subparcelas pelas cultivares BRS Pérola e BRS Estilo. Recomenda-se a utilização de fator f entre 0,30 e 0,35 para a obtenção de máximo rendimento agronômico e máxima eficiência no uso de água pelo feijoeiro-comum. BRS Estilo apresenta eficiência no uso de água 16 % maior que BRS Pérola.
ISSN:1517-6398
1983-4063
1983-4063
DOI:10.1590/1983-40632020v5057367