African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 5921

Full Length Research Paper

Management of Dinoderus porcellus L. (Coleoptera: Bostrichidae) infesting yam chips using varietal resistance and botanical powders of three medicinal plants

Loko Yeyinou Laura Estelle
  • Loko Yeyinou Laura Estelle
  • Laboratory of Applied Entomology, Faculty of Sciences and Technology of Dassa (FAST-Dassa), National University of Sciences Technologies Engineering and Mathematics of Abomey (UNSTIM), BP 14 Dassa, Benin.
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Gnaho Annick Christelle
  • Gnaho Annick Christelle
  • Laboratory of Applied Entomology, Faculty of Sciences and Technology of Dassa (FAST-Dassa), National University of Sciences Technologies Engineering and Mathematics of Abomey (UNSTIM), BP 14 Dassa, Benin.
  • Google Scholar
Toffa Joelle
  • Toffa Joelle
  • Laboratory of Applied Entomology, Faculty of Sciences and Technology of Dassa (FAST-Dassa), National University of Sciences Technologies Engineering and Mathematics of Abomey (UNSTIM), BP 14 Dassa, Benin.
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Orobiyi Azize
  • Orobiyi Azize
  • Laboratory of Applied Entomology, Faculty of Sciences and Technology of Dassa (FAST-Dassa), National University of Sciences Technologies Engineering and Mathematics of Abomey (UNSTIM), BP 14 Dassa, Benin.
  • Google Scholar
Dansi Alexandre
  • Dansi Alexandre
  • Laboratory of Biotechnology, Genetic Resources and Plant and Animal Breeding (BIORAVE), FAST-Dassa, UNSTIM, BP 14 Dassa, Benin.
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Tamo Manuele
  • Tamo Manuele
  • International Institute of Tropical Agriculture, 08 BP 0932, Cotonou, Benin.
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  •  Received: 26 July 2018
  •  Accepted: 13 September 2018
  •  Published: 04 October 2018

Abstract

In Benin, stored yam chips are severely attacked by Dinoderus porcellus Lesne which causes important losses. The use of medicinal plants combined with the insect-resistant yam chips can be an efficient alternative of chemical insecticides for yam chips protection. This study aims to evaluate an integrated pest management of D. porcellus using combined effects of resistant yam chips (Boniwouré, Gaboubaba, Wonmangou, and Yakanougo landraces) and leaves powder of Bridelia ferruginea Benth, Blighia sapida Juss and Khaya senegalensis Cronquist. For that, repellence, weight loss, mortality and progeny production were evaluated with Antouka commercial insecticide as positive control and untreated yam chips as negative control. The results revealed that all treatments are strongly repellent and showed important reproductive inhibition rate and remarkable inhibition of emergency of D. porcellus progeny. The weight loss due of yam chips treated with the three medicinal plants was not significantly different from those treated with Antouka, but significantly different from untreated yam chips. Only K. senegalensis at 2% (w/w) combined with Wonmangou landrace was able to achieve 66.2% of mortality after 21 days of experimentation. Hence, combination of resistant yam chips with leaves powder of these three medicinal plants could be promoted for integrated management of D. porcellus.

Key words: Dinoderus porcellus, integrated pest management, medicinal plants, resistance varietal, storage, yam chips.