BIOLOGICAL EFFECT OF SOME PLANT's SEED POWDERS AND ITS CONCENTRATIONS ON KHAPRA BEETLE Trogoderma granarium (Everts) .

The results of the effect of some seed powders of Cuminum cyminum, Coriandrum sativum and Eniculum vulgre on some biological aspect of Trogoderma granarium showed a various repellancy and attractivness effects on larvae and adults of khapra beetle and the seed powder of C. cyminum exhibit a higher repellancy effects on the larvae and adults reached 42.5, 32.5% respectively, while the seed powder of C. sativum revealed a good attraction effect to the adults of khapra at a 6% concentration reached 60%. The results also showed that the seed powder of C. sativum Has a good effect in reducing the weight loss of Wheat grain at 8% concentration in comparison with the control. The seed powders of the tested plants exhibited different effects on insect rate of increase and sex ration of males and females.