Impregnation of Packing Materials on infestation of Corcyra cephalonica Stainton in Groundnut

Thirteen plant extracts and oils viz., neem extract (Azadirachta indica), karanj extract (Pongamia glabra), undi extract (Calophyllum inophyllum), neem oil (A. indica), castor oil (Ricinus communis), lemongrass oil (Cymbopogan flexuous), mustard oil (Brassica juncea), coconut oil (Cocos nucifera), sesamum oil (Sesamum indicum), groundnut oil (Arachis hypogaea), soybean oil (Glycine max), sunflower oil (Helianthus annuus) and mehndi oil (Lawsonia inermis) at 1.0, 3.0 and 5.0% concentrations were impregnated in the packing materials of gunny and cloths bags, to evaluate the effect on grain damage, adult emergence and weight loss of Corcyra cephalonica. No infestation was recorded in impregnated gunny and cloth bags and in control up to two months of storage. The grain damage after 12 months in different treatments ranged from 1.1 to 25.0% and 1.0 to 22.1% in gunny and cloth bags, respectively. The minimum number of adults emerged in the treatment of neem extract, which was on par with karanj extract. The mean weight loss in gunny and cloth bags varied from 0.2 to 3.6% and 0.1 to 3.5%, respectively.