African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 4970

Full Length Research Paper

Influence of aqueous extracts of black angico on Pratylenchus brachyurus in cotton plants

Wéverson Lima Fonseca
  • Wéverson Lima Fonseca
  • Department of Fitotecnia, Federal University of Ceara, Fortaleza, Ceará, Brazil.
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Fernandes Antonio de Almeida
  • Fernandes Antonio de Almeida
  • Unidade Academic Agricultural Sciences, Federal University of Campina Grande, Pombal, Paraíba, Brazil.
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Rezanio Martins Carvalho
  • Rezanio Martins Carvalho
  • Department of Phytopathology, Rural Federal University of Pernambuco, Recife, Perbambuco, Brazil.
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Tarciana Silva dos Santos
  • Tarciana Silva dos Santos
  • Department of Phytopathology, Rural Federal University of Pernambuco, Recife, Perbambuco, Brazil.
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Ananda Rosa Beserra Santos
  • Ananda Rosa Beserra Santos
  • Department of Phytopathology, Rural Federal University of Pernambuco, Recife, Perbambuco, Brazil.
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Joelma Santana Rezende
  • Joelma Santana Rezende
  • Department of Phytopathology, Rural Federal University of Pernambuco, Recife, Perbambuco, Brazil.
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Maria Lúcia Tiburtino Leite
  • Maria Lúcia Tiburtino Leite
  • Department of Agriculture, Federal University of Piauí, Bom Jesus, Piauí, Brazil.
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Jeissica Taline Prochnow
  • Jeissica Taline Prochnow
  • Department of Agriculture, Federal University of Piauí, Bom Jesus, Piauí, Brazil.
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Ana Paola Pieta Rambo
  • Ana Paola Pieta Rambo
  • Department of Agriculture, Federal University of Piauí, Bom Jesus, Piauí, Brazil.
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  •  Received: 24 November 2016
  •  Accepted: 29 December 2016
  •  Published: 14 February 2019

Abstract

The root lesion nematode (Pratylenchus brachyurus) is one of the main phytosanitary problems of cotton plants in Brazil. Searching for alternatives that minimize the damages in the crop, several methods are performed aiming to manage these damages. Among them, is the use of vegetal extracts. In this sense, the aim of this study was to evaluate the potential of black angico extract (Anadenanthera macrocarpa) in the management of P. brachyurus in cotton crop. The experiment was conducted in a greenhouse at the Phytopathology Laboratory of the Federal University of Piauí in Bom Jesus-PI. The experimental design was completely randomized, in a factorial scheme (2×6), composed of two sources of extracts (leaf and bark) of black angico under six concentrations (0, 20, 40, 60, 80 and 100 g L-1), with five replications per treatment. The plants were inoculated with 1900 specimen/juveniles and eggs, 96 h after the transplanting. Sixty days after the application of extracts, some agronomic variables of the cotton and P. brachyurus were evaluated. The volume and fresh root mass showed considerable gains for all concentrations with the leaf extract. The plant height was negatively influenced by concentrations above 60.83 g L-1 for both extracts. Regarding the parasitism, all the extract concentrations, regardless of the source (leaf or bark), showed suppressiveness to P. brachyurus. Therefore, the aqueous extracts of black angico present nematicidal action and favor the development of cotton plants.

 

Key words: Gossypium hirsutum, root lesion nematode, alternative management.