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Provedor de dados:  Rev. Ciênc. Agron.
País:  Brazil
Título:  Agronomic evaluation of cowpea as a function of weed control with herbicides and different combinations
Autores:  Souza,Wando Wilson de Oliveira
Oliveira,Alexandre Bosco de
Dutra,Alek Sandro
Nunes,Renato Leandro Costa
Cavalcante,Robson Assunção
Data:  2016-12-01
Ano:  2016
Palavras-chave:  Vigna unguiculata (L.) Walp
Chemical control
Competition from weeds
Resumo:  ABSTRACT Cultivation of the cowpea is important in various regions of Brazil, but competition from weeds is one of the factors which limit productivity. The aim of this study therefore was to evaluate the pre-plant selectivity and efficiency of different herbicides, and combinations of herbicides, in the cowpea [Vigna unguiculata (L.) Walp.]. An experiment was carried out in a randomised block design, in lots split over time and with three replications, using a 4 x 7 factorial scheme, where the treatments consisted of: glyphosate, glyphosate + imazethapyr, glyphosate + flumioxazin, glyphosate + imazethapyr + flumioxazin, glyphosate + ready mix (imazethapyr & flumioxazin), and two control treatments (one with no weeding and one with manual weeding). The treatments were evaluated in combination with four different sowing times, i.e. immediately after application of the herbicides, and at five, ten and fifteen days after application (DAA). The combination of glyphosate + flumioxazin at 15 DAA, gave the highest mean productivity, 1,105.32 kg ha-1, followed by manual weeding with 1,027.37 kg ha-1. The herbicide mixtures of glyphosate + imazethapyr + flumioxazin caused phyto-toxicity in the cowpea crop, limiting the production components. The best strategies for weed control in this crop are manual weeding with seeding at 10 DAA, as well as the application of a glyphosate + flumioxazin mixture with seeding at 15 DAA.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Universidade Federal do Ceará
Relação:  10.5935/1806-6690.20160081
Formato:  text/html
Fonte:  Revista Ciência Agronômica v.47 n.4 2016
Direitos:  info:eu-repo/semantics/openAccess

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