The comparison effect of the leaves of three indigenous plants of Senegal (Crataeva religiosa Forts, Azadirachta indica A Juss and Senna occidentalis L.)

Comparing the efficacy of contact of the leaves of three plants (Crataeva religiosa, Azadirachta indica and Senna occidentalis) on the most formidable devastator of stored cowpea seeds, Callosobruchus maculatus was reviewed in our study. Thus, the crushed leaves of these plants were impacted on the external forms of this insect (eggs and adults). With the contact of all plants, Eggs are sensitive, but their sensitivity is increased with A. indica and less important with S. occidentalis. We observe this with any impacted dose. Adults showed the same sensitivity patterns as eggs with the two lowest doses (D1 (0.00273g / cm3 ) and D2 (0.00546g / cm 3 )), but with higher doses (D3 (0.0109g / cm3 ) and D4 (0.021g / cm3 )), C. religiosa lays the pawns. The adults of this insect are extremely sensitive to the contact with the crushed leaves of this plant, which induced 100% mortalities from the 12th d (D4 (0.021g / cm3 ).) To combine leaf shreds of these plants would be an effective means of controlling C maculatus in farmers' actual cowpea storage systems.