Thirteen plant extracts/oil viz. neem extract and oil (Azadirachta indica), karanj extract (Pongamia glabra), undi extract (Calophyllum inophyllum) oils of castor, lemongrass (Cymbopogal1 flexuous), mustard (Brassicil juncea), coconut (Cocos nucifera) sesamum (Sesamum indicum), groundnut (Arachis hypogaea), soybean (Glycine max), sunflower (Helianthus annus) and mehndi (Lawsonia inermis) @ 0.1, 0,5 and 1.0 ml/100 g broken seeds were tested to evaluate the effect on fecundity, egg viability and longevity of adults of Corcyra cephalonica. All the doses of test compounds were found to be effective in reducing the fecundity but in case of lemongrass oil, no egg laying took place as adult mortality occurred within 6–8 hrs. The reduction in egg viability varied from 17.9 to 52.2% in different plant extracts/oils. The longevity of male and female adults decreased when treated food was fed. The karanj extract was most effective and mehndi oil was least effective in reducing the fecundity, egg viability and longevity of adults.
Corcyra cephalonica, Reproductive potential, Plant products
