Article Sidebar
Article Details
Issue
Section
Articles
The Editorial Board of AgroScience and the Faculty of Agriculture, University of Nigeria, Nsukka are committed to disseminating the research publications in AgroScience Journal as widely as possible. In line with this commitment, the Editorial Board of AgroScience has adopted the policy of Open Access, with the content licensed under Creative Commons Attrition License (CCBY). On this premise, every author grants to the Faculty of Agriculture, University of Nigeria, Nsukka irrevocable, nonexclusive permission to exercise the copyright in the article for the purpose of open dissemination.
Main Article Content
Laboratory evaluation of the toxicity of methanolic extract of African bush tea seed (Hyptis suaveolens poit.) of the cowpea beetle (Callosobruchus maculates fabricius).
Abstract
Powdered seeds of Hyptis suaveolens Poit. (Labiatae) were extracted with methanol at 64-650 C in Soxhlet extraction unit. The extract was placed over a water bath at 600C to evaporate the methanol which was used as solvent. Newly emerged adults of Callosobruchus maculates F. (about 2-day old) were used in the evaluation of the toxicity of this extract. Different concentrations obtained by diluting the extract with acetone were prepared for use. The experiment was conducted in the laboratory at 25 + 20 C and 70 + 5% relative humidity. At all concentrations the extract had significant effect (P < 0.05) on C. maculates compared to the extract-free control (acetone alone).
Keywords: Callosobruchus maculates, evaluation, Hyptis suaveolens, methanolic extract.
Agro-Science Vol. 7 (2) 2008: pp. 114-117
