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Efficacy of Azadirachta indica A. Juss Leaf Powder at Varying Concentrations Against Callosobruchus maculatus (Fab.) Infestation in Two Varieties of Stored Cowpea (Vigna unguiculata L. Walp.) in Makurdi, Nigeria

Post-harvest losses of cowpea (Vigna unguiculata L. Walp.) due to infestation by the cowpea weevil Callosobruchus maculatus (Fab.) (Coleoptera: Chrysomelidae) remain a critical constraint to smallholder food security across sub-Saharan Africa. This study evaluated the efficac...
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researchsquare.com broke the news on Thursday, June 11, 2026.
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