African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Morpho-agronomic characteristics of cowpea under different environments and planting densities

Antonio Felix da Costa
  • Antonio Felix da Costa
  • Agronomic Institute of Pernambuco, Av. Gal. San. Martin, 1371 - Bonji, 50761-000, Recife, Brazil.
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Alexandre Bosco de Oliveira
  • Alexandre Bosco de Oliveira
  • Federal University of Ceará, Av. Mister Hull, 2077, 60356- 001, Fortaleza, CE, Brazil.
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Leandro Silva do Vale
  • Leandro Silva do Vale
  • Maranhão State University, Praça Gonçalves Dias, s/n, 65800-000, Balsas, MA, Brazil.
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Jose Felix de Brito Neto
  • Jose Felix de Brito Neto
  • Paraíba State University, Campus II, Sítio Imbaúba 58117-000 - Lagoa Seca, PB, Brazil.
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Ivomberg Dourado Magalhaes
  • Ivomberg Dourado Magalhaes
  • Federal University of Alagoas, Crop Production Department, Av. Lourival Melo Mota Brazil.
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Rener Luciano de Souza Ferraz
  • Rener Luciano de Souza Ferraz
  • Campina Grande Federal University. Av. Aprígio Veloso, 882, Bodocongó, Campus I - Bloco CM, 58429-140, Campina Grande, Brazil.
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  •  Received: 17 May 2017
  •  Accepted: 14 June 2017
  •  Published: 22 June 2017

Abstract

The aim of this study was to evaluate the growth and production components of cowpea ‘BRS Nova Era’ under different planting densities in two growing conditions. The experiment followed an experimental design of randomised blocks, which comprised two environments (Pesqueira and Lajedos cities, Brazil) and five planting densities (6, 8, 10, 12 and 14 plants m-1). In Pesqueira, all production components were influenced by planting density except for plant height. In Lajedo, all production components were influenced by planting density. Productivity per total area was 74.25 and 58.33% higher at a density of six plants m-1 compared to the highest density for both Pesqueira and Lajedos, respectively. The growth of cowpea under edapho-climatic conditions of Lajedos resulted in better development and productivity than in Pesqueira. Therefore, under the conditions of our study, different planting densities of the cowpea promote changes in production components and productivity, with better results obtained at a density of 6 plants m-1.

Key words: Vigna unguiculata (L.) Walp, spatial arrangements, growth, production components, productivity.