Abstract

This publication describes the efficacy of Boscia senegalensis for the control of the groundnut bruchid,Caryedon serratus (Ol.). Crushed B. senegalensis fresh leaves and fruits were mixed with groundnuts and stored in hermetic containers. A high sensitivity of C. serratus adults at relatively low concentrations of the plant was observed. After 24 h of exposure, fresh crushed leaves mixed with peanuts seeds at 6% (w/w) induced 100% mortality of adults. Same results were obtained with fresh crushed fruits at only 3% (w/w). Only 6% leaves or fruits of B. Senegalensis ensured a complete protection of groundnuts pods and shelled nuts against the weevil C. serratus. The results show that this natural product, which liberate enzymatically Methyl isothiocyanate could potentially protect stored groundnuts at farm level in Africa.

Key words: Boscia senegalensis, Caryedon serratus, fumigant effect, stored groundnuts, insecticidal activity.