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

Published online by Cambridge University Press:  19 September 2011

Bayeh Mulatu  and
Tadesse Gebremedhin
Bayeh Mulatu
Affiliation:
Ethiopian Agricultural Research Organisation, P. O. Box 2003, Addis Ababa, Ethiopia, E-mail: bayeh65@yahoo.com
Tadesse Gebremedhin
Affiliation:
Ethiopian Agricultural Research Organisation, P. O. Box 2003, Addis Ababa, Ethiopia, E-mail: bayeh65@yahoo.com
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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. (Goleoptera: Bruchidae) on stored faba bean seeds for two years at Holetta Research Centre, Ethiopia. Oils of Azadirachta indica, Milletiaie ferrnginea 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.

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.

Keywords

botanicalsAdzuki bean beetleCallosobruchus chinensisfaba beanneempyrethrumextraits de plantesbruche du haricot AdzukiCallosobruchus chinensisnimpyrèthre
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 20 , Issue 1 , March 2000 , pp. 33 - 38
Copyright
Copyright © ICIPE 2000

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