African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Consortium of maize and cowpea in organic farming - dry grain production

Áurea I. A. Fonseca e Souza
  • Áurea I. A. Fonseca e Souza
  • Department of Agricultural Sciences, Federal Rural University of Amazon, Av. Pres. Tancredo Neves, 2501, CEP 66077-830, Belém, Pará, Brazil.
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Kerolém P. S. Cardoso
  • Kerolém P. S. Cardoso
  • Department of Agricultural Sciences, Federal Rural University of Amazon, Av. Pres. Tancredo Neves, 2501, CEP 66077-830, Belém, Pará, Brazil.
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Ana E. de A. Brito
  • Ana E. de A. Brito
  • Department of Agricultural Sciences, Federal Rural University of Amazon, Av. Pres. Tancredo Neves, 2501, CEP 66077-830, Belém, Pará, Brazil.
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Glauco A. S. Nogueira
  • Glauco A. S. Nogueira
  • Department of Agricultural Sciences, Federal Rural University of Amazon, Av. Pres. Tancredo Neves, 2501, CEP 66077-830, Belém, Pará, Brazil.
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Fábio C. Coelho
  • Fábio C. Coelho
  • Centro de Ciências e Tecnologias Agropecuárias, University Estadual Norte Fluminense, CEP 28013-602, Campos dos Goytacazes - RJ, Brazil.
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Jocarla A. Crevelari
  • Jocarla A. Crevelari
  • Centro de Ciências e Tecnologias Agropecuárias, University Estadual Norte Fluminense, CEP 28013-602, Campos dos Goytacazes - RJ, Brazil.
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Anna C. S. Oliveira
  • Anna C. S. Oliveira
  • Departamento de Unidade de Estudos de Agronomia, University Estadual do Maranhão, Cidade Universitaria Paulo VI, CEP 65055-310, São Luís - MA, Brazil.
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Aurilena A. Silva
  • Aurilena A. Silva
  • Centro de Ciências e Tecnologias Agropecuárias, University Estadual Norte Fluminense, CEP 28013-602, Campos dos Goytacazes - RJ, Brazil.
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Cândido F. Oliveira Neto
  • Cândido F. Oliveira Neto
  • Department of Agricultural Sciences, Federal Rural University of Amazon, Av. Pres. Tancredo Neves, 2501, CEP 66077-830, Belém, Pará, Brazil.
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Diana J. P. Sousa
  • Diana J. P. Sousa
  • Department of Agricultural Sciences, Federal Rural University of Amazon, Av. Pres. Tancredo Neves, 2501, CEP 66077-830, Belém, Pará, Brazil.
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Jessica S. S. Teixeira
  • Jessica S. S. Teixeira
  • Department of Agricultural Sciences, Federal Rural University of Amazon, Av. Pres. Tancredo Neves, 2501, CEP 66077-830, Belém, Pará, Brazil.
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  •  Received: 03 October 2017
  •  Accepted: 26 October 2017
  •  Published: 16 November 2017

Abstract

Intercropping of maize and cowpea is widely used by Brazilian family farmers. The aim of this work is to compare the grain yield of two maize cultivars, and one cultivar of cowpea in organic system. Treatments of monoculture of cowpea (Poços de Caldas) and maize ('BR106' and 'AG1051') and intercropping were used. A randomized block design with four replicates in an area under conversion to organic production system was used. The experiment was conducted in the period of October 2012 to March 2013, corresponding to the periods of spring/summer. The maize alone was on average, 26.5 cm taller and grain yield was 28% higher than in the intercropping. The cowpea intercropped with maize 'AG 1051' was 3.8 cm taller than the intercropped with 'BR 106'. In monoculture, the cowpea presented more (0.7 and 1.2 grain per pod when intercropped with 'AG 1051' and 'BR 106', respectively). The cowpea monoculture resulted in 2.4 pods per plant than in intercropping and productivity was 5.4 times higher than that of the intercropping. The cowpea intercropped with 'BR 106' was efficient, while that with 'AG1051' was inefficient in terms of land equivalent coefficient.

Key words: Vigna unguiculata, Zea mays, land equivalent coefficient.