Open AccessCowpea response to different irrigation depths in the Submedium São Francisco River Valley, in Juazeiro, BA, Brazil
Author(s) -
Vinicius Evangelista Alves Oliveira,
Gertrudes Macário de Oliveira,
Ruy de Carvalho Rocha,
Mário de Miranda Vilas Boas Ramos Leitão,
Luciano Roniê Calado
Publication year - 2020
Publication title -
agrometeoros
Language(s) - English
Resource type - Journals
ISSN - 2526-7043
DOI - 10.31062/agrom.v27i2.26475
Subject(s) - irrigation , randomized block design , grain yield , field experiment , yield (engineering) , agronomy , water use efficiency , horticulture , biology , metallurgy , materials science
Different cowpea genotypes respond differently to water regimes and to different climatic conditions. The aim of this study was to evaluate the response of cowpea to different irrigation depths in the Submedium Sao Francisco River Valley, Brazil. The experiment was conducted at the experimental field of DTCS/UNEB, in Juazeiro, BA, Brazil, from November/2016 to January/2017, in a 2 x 5 factorial scheme randomized block design (cowpea genotypes x irrigation depths), with three replicates. The genotypes used were BRS Acaua and Canapu and irrigation depths, obtained based on 50, 75, 100, 125, and 150% of ETo. Physiological characteristics, production components and water use efficiency were analyzed. Increased irrigation depths only caused a significant effect on mass of one 100 grains. With water availability and climatic conditions observed during the experiment, BRS Acaua outperformed Canapu, with a better yield performance. BRS Acaua genotype had a better response in water use efficiency for grain yield, exceeding Canapu by 47.21%.
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