Ovicidal effect of three plant essential oils on Callosobruchus maculatus F. (Col., Bruchidae)

In order to find recyclable, environment friendly and easy accessible insecticides, the essential oils of three plant species including Mentha aquatica L., M. piperita L. and Anethum graveolens L. were used against the eggs of Callosobruchus maculatus. The experiment was conducted in 6 replications using a completely randomized design of factorial experiment. The essential oils were prepared by water distillation method. Experiment was carried out at 30±2 ˚C and 60±5% R. H. under dark condition. Results show that all three plant essential oils reduced percentage of egg hatching significantly. At the concentration of 37.03 µl/lessential oils of M. aquatica, M. piperita and A. graveolens caused 100, 100 and 92.73% mortalities of eggs, respectively.Values of 50% lethal concentrationon eggs were 2.628, 3.806 and 4.468 µl/l for M. aquatica, M. piperita and A. graveolens, respectively.