Effect of edible oils against Corcyra cephalonica (St.) in stored groundnut kernel

Abstract

There were seven oils viz., mustard, clove, castor, coconut, sunflower, soybean and sesame each applied at rates of 1 ml and 3 ml per 100 g of kernels as kernel protectants of groundnut. Effect of kernel protectants on fecundity revealed that no adult emergence was found on groundnut kernels treated with clove oil each at 1 ml and 3 ml per 100 g of kernels, while in case of the treatments viz., castor oil, coconut oil and sesame oil each at 3 ml per 100 g of kernels very few male moths were emerged. Among the remaining treatments, castor oil (134.67 eggs) was found most effective treatment in preventing egg laying by C. cephalonica at 3 ml per 100 g of kernels. In castor oil treatment at 1 ml per 100 g of kernels found most promising in delaying the development (58.40 days) of C. cephalonica.