Bioassay of Powdery Plant Extract of Hyptis Suaveolens in the Control of Insect Pest of Cowpea, Callosobruchus maculatus

The use of powdery extract of Hyptis suaveolens in the control of storage pest of cowpea Callosobruchus maculatus was studied. The experiment was conducted under laboratory conditions for 16 days for 3 consecutive times during which mortality of insect and the infestation were determined. The insecticidal activities of H. suaveolens was observed having about 60% of the insect mortality within 8 days and prevented uninfected cowpea from C. maculatus throughout the period of the experiment.