In Sahel, Callosobruchus maculatus (F.) (Coleoptera: Bruchinae) is one of the most fearsome pest of Cowpea (Vigna unguiculata Walp). To effectively combat this pest, many authors have advocated leaves Boscia senegalensis, plant commonly used by African producers in the protection of stored products. In this study, the factors that may influence the insecticidal activity of this insecticide plant in the Cowpea storage structures were examined. It is the effect of an increase in the mass of stored seeds, the effect of an increase in the numbers of insects and the effect of shelf life of broy
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