Effect of some plant oils to control pest insects of Rusty flour beetle, Tribolium castaneum and Small grain borer, Rhyzopertha dommica

This study was carried out to investigate the effect of four kinds of plant oils to control insects Tribolium castaneum and Rhyzopertha dommica. Heliantjus annus and Communis ricinus oils were used aginst T. castaneum and Olea europea and Nucifera cocos oil aginst R. dommica. The plant oils were used in three concentrations of 2.5, 5, and 7.5ml/kg. The results showed different effects of the used oils and concentration, however, all oil had effective role in decreasing number of larvae and pupae, and adult pest’s Coconut oil was also more effective than the others at 2.5, 5, and 7.5ml/kg.