Abstract
Extracts of Acorns calamus (L.) (sweet flag), Azadirachta indica (A. Juss) (neem) and Curcuma longa (L.) (turmeric) prepared in petroleum ether, acetone and ethanol were evaluated as growth inhibitor against Sitotroga cerealella (Oliv.). Among these extracts, petroleum ether extract of sweet flag at application rates of 1000, 500 and 250 mu g/g and its acetone extract at 1000 and 500 mu g/g completely inhibited emergence of adults. Petroleum ether extract of neem was next to sweet flag. Turmeric was less effective than neem extract especially at 1000 and 500 mu g/g application rates,