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Oviposition-Deterrent and Toxic Effects of Various Botanicals on the Adzuki Bean Beetle, Callosobruchus chinensis L.

  • Bayeh MulatuEmail author
  • Tadesse Gebremedhin
Research Article

Abstract

The oviposition-deterrent and toxic effects of seven plant species with known biological effects were tested against the Adzuki bean beetle, Callosobruchus chinensis L. (Coleoptera: Bruchidae) on stored faba bean seeds for two years at Holetta Research Centre, Ethiopia. Oils of Azadirachta indica, Milletiaie ferruginea and Chrysanthemum cineraraefolium were the most effective in partially or completely preventing egg laying, and no bruchids emerged from the few eggs laid. The Phytolacca dodecandra, Hagenia abyssinica and Schinus molle treatments had no significant effect on the bruchids and most of the eggs laid developed into adults. Eucalyptus globulus seed powder treatment caused the death of only emerging adult beetles.

Key Words

botanicals Adzuki bean beetle Callosobruchus chinensis faba bean neem pyrethrum 

Résumé

Au cours de deux ans, sept espèces de plantes reconnues pour leurs pouvoirs biologiques ont été testées sur les graines emmagasinées du haricot Adzuki pour évaluer leur pouvoir dissuasif de ponte et toxique vis-à-vis de la bruche du haricot Callosobruchus chinensis, au centre de recherche de Holetta en Ethiopie. Des huiles extraites de Azadirachta indica, Milletiaie furriginea et Chrysanthemum cineraraefolium ont été les plus effectives dans l’arrêt partiel ou complet de la ponte, et aucune éclosion ne fut observée même chez le peu d’oeufs pondus. Les traitements aux extraits de Phytolacca dodecandra, Hagenia abyssinica et Schinus molle n’ont pas révélé d’effet significatif sur les bruches et la plupart d’oeufs pondus donnaient lieu aux adultes. Le traitement à la poudre de capsules de Eucalyptus globulosus provoquait la mortalité seulement chez les adultes nouvellement éclos.

Mots Clés

extraits de plantes bruche du haricot Adzuki Callosobruchus chinensis nim pyrèthre 

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Copyright information

© ICIPE 2000

Authors and Affiliations

  1. 1.Ethiopian Agricultural Research OrganisationAddis AbabaEthiopia

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