African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12275

Full Length Research Paper

Bioactivity of ethanolic extracts of Euphorbia pulcherrima on Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)

Viviane Tavares Almeida
  • Viviane Tavares Almeida
  • Agronomy Department, College of Agricultural Sciences, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
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Vânia Maria Ramos
  • Vânia Maria Ramos
  • Agronomy Department, College of Agricultural Sciences, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
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Matheus Barbosa Saqueti
  • Matheus Barbosa Saqueti
  • Agronomy Department, College of Agricultural Sciences, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
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Pedro Henrique Gorni
  • Pedro Henrique Gorni
  • Agronomy Department, College of Agricultural Sciences, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
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Cláudia Pacheco
  • Cláudia Pacheco
  • Agronomy Department, College of Agricultural Sciences, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
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Renato Marcos de Leão
  • Renato Marcos de Leão
  • Agronomy Department, College of Agricultural Sciences, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
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  •  Received: 12 December 2016
  •  Accepted: 24 January 2017
  •  Published: 29 March 2017

Abstract

The fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is a polyphagous species which attacks many economically important crops in several countries. This insect is an important pest of corn, and currently the most widely used control method is chemical. In order to minimize environmental impacts, other forms of control have been tried, and accordingly, the investigation of plants with insecticidal effects becomes relevant. Thus the present study was conducted in order to evaluate the effect of the ethanolic extract of Euphorbia pulcherrima (poinsettia) leaves in fall armyworm biology. Extracts were prepared from leaves of the plant E. pulcherrima collected at different phenological stages (vegetative and reproductive), oven dried, crushed and then solubilized in ethanol, yielding the ethanol extract. The extracts were set aside in 0.5 and 1% concentrations for each phenological stage of the plant, incorporated into an artificial diet and offered to the larvae of S. frugiperda. The extract of vegetative and reproductive phase of E. pulcherrima leaves in concentrations of 0.5 and 1%, has showed that it affected mortality in the larvae, increasing the larval period and reducing the weight of larvae and pupae and viability of the eggs of the caterpillars. Ethanolic extract of E. pulcherrima leaves in the reproductive phase of the plant is effective to reduce the S. frugiperda population.

 

Key words: Botanical insecticide, plant extracts, mortality, poinsettia, pest biology.