African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6691

Full Length Research Paper

Influence of leaf extract of Jatropha curcas on initial growth of cauliflower (Brassica oleracea var. botrytis)

Willian Cézar Nadaletti
  • Willian Cézar Nadaletti
  • Universidade Estadual do Oeste do Paraná Western Paraná State University 2069, Paraná, Brazil.
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Reinaldo Aparecido Bariccatti,
  • Reinaldo Aparecido Bariccatti,
  • Universidade Estadual do Oeste do Paraná Western Paraná State University 2069, Paraná, Brazil.
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Willian Cézar Nadaletti
  • Willian Cézar Nadaletti
  • Universidade Estadual do Oeste do Paraná Western Paraná State University 2069, Paraná, Brazil.
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Reinaldo Aparecido Bariccatti
  • Reinaldo Aparecido Bariccatti
  • Universidade Estadual do Oeste do Paraná Western Paraná State University 2069, Paraná, Brazil.
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Reginaldo Ferreira Santos
  • Reginaldo Ferreira Santos
  • Universidade Estadual do Oeste do Paraná Western Paraná State University 2069, Paraná, Brazil.
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Samuel Nelson Melegari de Souza
  • Samuel Nelson Melegari de Souza
  • Universidade Estadual do Oeste do Paraná Western Paraná State University 2069, Paraná, Brazil.
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Jhonatas Antonelli
  • Jhonatas Antonelli
  • Universidade Estadual do Oeste do Paraná Western Paraná State University 2069, Paraná, Brazil.
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Paulo André Cremonez
  • Paulo André Cremonez
  • Universidade Estadual do Oeste do Paraná Western Paraná State University 2069, Paraná, Brazil.
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Eduardo de Rossi and Fabíola Tomassoni
  • Eduardo de Rossi and Fabíola Tomassoni
  • Universidade Estadual do Oeste do Paraná Western Paraná State University 2069, Paraná, Brazil.
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  •  Received: 16 August 2013
  •  Accepted: 09 January 2014
  •  Published: 16 January 2014

Abstract

This paper aimed at evaluating the initial growth of cauliflower (Brassica oleracea var. Botrytis) subjected to various levels of aqueous extract of leaves of Jatropha (Jatropha curcas) according to the following parameters: stem diameter, stem length, root length, leaf length and leaf area, root dry mass, leaf dry mass, root fresh mass, and leaves fresh mass. The experimental design was randomly blocks with six concentrations (0, 5, 10, 20, 40, and 80%) and six replications. The study was conducted at the experimental campus of the State University of West Paraná, UNIOESTE, campus Cascavel. The statistical analysis of the results showed a significant effect of concentrations of aqueous extract of J. curcas on the initial growth of cauliflower. Except for root growth, there was a positive effect dependent on the increased concentration of crude aqueous extract.

 

Key words: Cauliflower, jatropha, allelopathy.