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

High sourgrass threshold interfere on chick-peas development in tropical conditions

Carita Liberato do Amaral
  • Carita Liberato do Amaral
  • Programa de Pós-Graduação em Agronomia (Produção Vegetal) – Departamento de Biologia Aplicada à Agropecuária, FCAV-UNESP, Jaboticabal-SP, Brazil.
  • Google Scholar
Marcelo Claro de Souza
  • Marcelo Claro de Souza
  • Programa de Pós-Graduação em Biologia Vegetal – Departamento de Botânica, IB-UNESP, Rio Claro-SP, Brazil.
  • Google Scholar
Guilherme Bacarim Pavan
  • Guilherme Bacarim Pavan
  • Bolsista de Iniciação Científica - Departamento de Biologia Aplicada à Agropecuária, FCAV-UNESP, Jaboticabal-SP, Brazil.
  • Google Scholar
Marina Alves Gavassi
  • Marina Alves Gavassi
  • Bolsista de Iniciação Científica - Departamento de Biologia Aplicada à Agropecuária, FCAV-UNESP, Jaboticabal-SP, Brazil.
  • Google Scholar
Pedro Luis da Costa Aguiar Alves
  • Pedro Luis da Costa Aguiar Alves
  • FCAV-UNESP - Departamento de Biologia Aplicada à Agropecuária, Jaboticabal-SP, Brazil.
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  •  Accepted: 27 December 2012
  •  Published: 31 January 2013

Abstract

 

The grains of Cicer arietinum (chick-peas) is one of the richest sources of proteins among worldwide grain crops. However, 100% of chick-peas grains consumed in Brazil are imported. Aiming to contribute with agricultural technologies to yield this crop in Brazil, we studied the interference of sourgrass thresholds at the initial development of chick-peas in tropical conditions. We evaluated the competition effects of seven sourgrass densities on chick-peas crops from 15 to 45 days after sowing. These effects were evaluated according to interferences on chick-peas height, number of leaves and offshoots, stem diameter, leaf area and dry mass. We observed low interferences with up to 8 sourgrass plants m-2 and several interferences from 16 to 128 plants m-2 justifying the control of sourgrass at the initial development of chick-peas.

 

Key words: Cicer arietinumDigitaria insularis, competition, interference, weed.