Home About us MoEF Contact us Sitemap Tamil Website  
About Envis
Whats New
Research on Microbes
Microbiology Experts
Online Submission
Access Statistics

Site Visitors

blog tracking

Journal of Applied Biosciences
Vol. 86 (1), 2015

Toxicity of two plant powders as biopesticides in the management of Callosobruchus maculatus F. (Coleoptera: Chrysomelidae, Bruchinae) on two stored grain legumes

CD Chougourou, YA Zoclanclounon, A Agbaka, A Togola


Objective: The present study aimed to evaluate effects of leaf powder of Chenopodium ambrosioides (wormseed) and Adenia cissampeloides (snake climber) on insect populations and seeds weight loss percentage.
Methodology and Results: Two leaf powders were applied at 2.5%, 5% and 7.5% (wt/wt). All bioassays were conducted at 27±2°C and 70±5%RH. Insect mortality was evaluated after 2, 4 and 6 days of exposure and the
total progeny was assessed 34 days after. C. ambrosioides at 2.5% showed the best efficacy, recording 69.64% of mortality in Vigna  subterranea groundnuts and 100% of mortality in Kerstingiella geocarpa one’s, 6 days after treatment. The lowest LC50 value after 6 days was obtained with A. cissampeloides applied at 2.37g/20g of V. subterranea groundnuts and with C. ambrosioides applied at 1.38 g/20g of K. geocarpa
Conclusion and application of findings: Because of their effectiveness, the leaf powder of these plants could be recommended as grain protectant against C. maculatus.

Keywords: Botanical insecticides, pulses weevil, grain legumes, plant extracts, mortality rate.

Copyright © 2005 ENVIS Centre ! All rights reserved
This site is optimized for 1024 x 768 screen resolution