Impacts of intercropping on the major insect pests of <i>Jatropha curcas L.</i> in south of Benin

Jatropha curcas is an oleaginous plant whose seed yield low. The present study aimed at evaluating pests associated with J. curcas. In regards to the densities, Denticera near divisella density was obtained 0.85 larvae per in sole farming and 0.70, 0.61, respectively when intercropped casava, maize cowpea. When cassava Stomphastis thraustica most encountered species a of 1.28 while 0.61 for 0.27 cowpea against 0.43 mono culture. For maize, Aulacophora africana abundant 0.47 adult plant. case D. nr had highest It also shown that grain depends intercrop. yields were from 591.75 ± 109.25kg / ha; 431.75 92.50kg 252.50 51.50kg 89.50 43.00kg/ha pure curcas, or respectively. Therefore, it important choose intercropping reduce crop.