
The insecticidal properties of H.spicigera leaf extracts (hexane, ethylacetate and methanol) tested against Callosobruchus maculatus on cowpea was carried out using Azadirachtin as a standard. Ethylacetate extract and standard azadirachtin showed the highest percentage mortality of 98% each at 72hr, while methanol, hexane and control gave percentage mortality of 75%,87% and 21% respectively. Percentage emergence of Azadirachtin standard and ethylacetate extract showed 6% and 8% while methanol, hexane and control gave percentages emergence of 18%,13% and 87% at 72hr respectively. Ethylacetate and methanol extracts showed oviposition deterrent at 3.16% and 5.56% while hexane, and control gave 11.11%, and 76.39% respectively. These results showed that ethylacetate and methanol extracts were active in controlling C.maculatus eggs laid relative to azadirachtin (2.78%) used as standard in this study. At 16wk, hexane extract showed the least percentage (2%) seed damaged while ethylacetate, methanol and control gave 5%, 23%,88% relative to standard azadirachtin (10%).The data showed ethylacetate leaf extract of H. spicigera with 3.16% oviposition deterrent,98% mortality and 6% emergences having potentials for use as a bio-control agent in post- harvest storage on grains susceptible to insect attack/infestation than methanol and hexane extracts.