African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6688

Full Length Research Paper

Potential of aqueous neem extract for Thaumastocoris peregrinus control

Andressa Layane Ferreira Linhares
  • Andressa Layane Ferreira Linhares
  • Institute of Agricultural Sciences, Federal University of Minas Gerais, Montes Claros, Minas Gerais, Brazil.
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Mauricélia Ferreira Almeida
  • Mauricélia Ferreira Almeida
  • Center of Agrarian Sciences, State University of the Tocantina Region of Maranhão, Imperatriz, Maranhão, Brazil.
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Edmar de Souza Tuelher
  • Edmar de Souza Tuelher
  • Promip Integrated Pest Management Ltd., Conchal, São Paulo, Brazil.
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Michela Costa Batista
  • Michela Costa Batista
  • Center for Higher Studies of Balsas, State University of Maranhão, Balsas, Maranhão, Brazil.
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Roldão Carlos Andrade Lima
  • Roldão Carlos Andrade Lima
  • School of Agronomic Sciences, Paulista State University, Botucatu, São Paulo, Brazil.
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Adriana de Sousa Freitas
  • Adriana de Sousa Freitas
  • Center of Agrarian Sciences, State University of the Tocantina Region of Maranhão, Imperatriz, Maranhão, Brazil.
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Bianca Pinheiro da Costa Neiva
  • Bianca Pinheiro da Costa Neiva
  • Center of Agrarian Sciences, State University of the Tocantina Region of Maranhão, Imperatriz, Maranhão, Brazil.
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Brunna Tavares da Silva Brito Sousa
  • Brunna Tavares da Silva Brito Sousa
  • Gurupi University Campus, Federal University of Tocantins, Gurupi, Tocantins, Brazil.
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Kaio Lucena Vidal
  • Kaio Lucena Vidal
  • Institute of Agricultural Sciences, Federal University of Minas Gerais, Montes Claros, Minas Gerais, Brazil.
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Jeferson Pereira da Silva
  • Jeferson Pereira da Silva
  • Institute of Agricultural Sciences, Federal University of Minas Gerais, Montes Claros, Minas Gerais, Brazil.
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Raylson Marcelo Fernandes de Lima
  • Raylson Marcelo Fernandes de Lima
  • Faculty of Medical Sciences of Santa Casa de São Paulo, São Paulo, Brazil.
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Yago Luan Santos Vila Nova
  • Yago Luan Santos Vila Nova
  • Santa Terezinha Faculty of Education, Imperatriz, Brazil.
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Nayane Ketley Ferreira Linhares
  • Nayane Ketley Ferreira Linhares
  • Alliance Metropolitan College, Faculty of Administration, Paulista University, São Paulo, Brazil.
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  •  Received: 27 December 2021
  •  Accepted: 08 February 2022
  •  Published: 28 February 2022

Abstract

Eucalyptus cultivation has undergone great expansion in recent years due to the increase in commercial production of this wood for the paper, cellulose and steel industries. One of the main factors responsible for production losses is insect attack. The main insect that acts as a pest, devastating eucalyptus plantations is Thaumastocoris peregrinus, being controlled through the application of synthetic insecticides. The objective was to evaluate the potential of the aqueous extract of neem leaves for the alternative control of T. peregrinus. The survival of T. peregrinus was evaluated in two experiments with higher (20, 40, 60 and 80%) and lower (1, 5, 10 and 20%) concentrations of aqueous extract of neem leaf. The experiment took place under laboratory conditions at a controlled temperature of 25 ± 2°C. In the first experiment, higher concentrations were more effective in reducing survival. In the second experiment, the lowest concentrations reduced less effectively. It is concluded that the aqueous extract of neem leaves in higher concentrations has an insecticidal effect against T. peregrinus, reducing the survival of adults of this species.

Key words: Insecticidal effect, forest pest, survival, toxicity.