Título:	Production performance of BRS Tumucumaque cowpea under different plant densities and water regimes.
Autoria:	SILVA JUNIOR, J. S. da BASTOS, E. A. CARDOSO, M. J. ANDRADE JUNIOR, A. S. de RIBEIRO, V. Q.
Afiliação:	JOSIMAR SOARES DA SILVA JÚNIOR, Colégio Agrícola, Floriano, PI; EDSON ALVES BASTOS, CPAMN; MILTON JOSE CARDOSO, CPAMN; ADERSON SOARES DE ANDRADE JUNIOR, CPAMN; VALDENIR QUEIROZ RIBEIRO, CPAMN.
Ano de publicação:	2020
Referência:	Revista Caatinga, v. 33, n. 1, p. 205 ?216, jan./mar. 2020.
Conteúdo:	Cowpea is a legume of great socioeconomic importance for the North and Northeast regions of Brazil. However, studies to evaluate its production performance when cultivated under irrigated regime and under different plant densities are necessary. The objective of this work was to evaluate the effects of different water regimes and different plant densities on grain yield, production components and water use efficiency, and on the correlation between grain yield and production components of BRS Tumucumaque cowpea cultivar. The experiment was carried out at Embrapa Meio-Norte experimental area, in Teresina, Piauí State, Brazil, from June to September 2017, in an Argissolo Vermelho-Amarelo eutrófico(Ultisol). A randomized complete block design was used, in a split-plot scheme with four replicates, in which the water regimes occupied the plots (187.7; 233.5; 263.5 and 288.7 mm) and plant densities, the subplots (12; 16; 20 and 24 plants m-2). The number of pods per plant, number of pods per square meter, pod length, dry grain yield and water use efficiency were evaluated. The maximum dry grain yield reached was 1,694.46 kg ha-1, with application of 288.7 mm and density of 20.4 plants m-2. The production component number of pods per square meter was the most correlated with dry grain yield.
Thesagro:	Água de Irrigação Densidade de Plantio Grão Produtividade Vigna Unguiculata
NAL Thesaurus:	Irrigation water Water use efficiency Cultivars
Palavras-chave:	Lâmina de irrigação Eficiência de uso da água
ISSN:	0100-316X
Digital Object Identifier:	10.1590/1983-21252020v33n122rc
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPAMN)