alexa Synergistic Bioefficacy of Botanical Insecticides against Zabrotes subfasciatus (Coleoptera: Bruchidae) a Major Storage Pest of Common Bean | OMICS International | Abstract

Journal of Agricultural Science and Food Research
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Research Article

Synergistic Bioefficacy of Botanical Insecticides against Zabrotes subfasciatus (Coleoptera: Bruchidae) a Major Storage Pest of Common Bean

Tamiru A1*, Bayih T2,3 and Chimdessa M3

1International Centre of Insect Physiology and Ecology, Ethiopia

2Hawassa University, PO Box 05, Hawassa, Ethiopia

3Haramaya University, PO Box 138, Dire Dawa, Ethiopia

*Corresponding Author:
A Tamiru
International Centre of Insect Physiology and Ecology
PO Box 30772-00100, Nairobi, Kenya
Tel: +254735875848
Fax: +254208632001
E-mail: [email protected]

Received Date: October 30, 2016; Accepted Date: November 17, 2016; Published Date: November 29, 2016

Citation: Tamiru A, Bayih T, Chimdessa M (2016) Synergistic Bioefficacy of Botanical Insecticides against Zabrotes subfasciatus (Coleoptera: Bruchidae) a Major Storage Pest of Common Bean. J Fertil Pestic 7: 171. doi:10.4172/2471- 2728.1000171

Copyright: © 2016 Tamiru A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

This experiment was conducted to determine possibilities of synergism among insecticidal plants against Z. subfasciatus with a view of augmenting potency and reducing dosage rates. Leaf and seed powders of five insecticidal plants, namely Jatropha curcas (L.), Datura stramonium (L.), Chenopodium ambrosioides (L.), Schinus molle (L.) and Azadrachta indica (A. Juss) were mixed to 1% and 2%w/w unitary and binary formulations. The synthetic insecticide primiphos methyl at the rate of 0.1/100 gm grain dust and untreated grains were used as positive and negative controls, respectively. Most binary formulation had better efficacy than their constituent unitary formulation especially at lower dosage rates. Synergistic combination of botanical powders resulted in highest adult mortality, F1 progeny reduction and lowest weevil perforation index and weight loss comparable to chemical standard primiphos methyl. Among the botanical combinations, bean seeds treated with binary formulation of C. ambrosioides with D. stramonium, J. curcas and S. molle gave the best efficacy in controlling Z. subfasciatus.

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