Abstract
The petroleum ether extract of botanicals viz, leaves of Eucalyptus terticornis, Bassia latifolia, Ocimum basilicum, Pongamia glabra, Tribulus terrestris and Tridax procumbens and rhizomes of Acorus calamus was prepared at four concentrations viz., 0.05, 0.1, 0.15 and 0.2 per cent by dissolving them in acetone. They were used to evaluate their efficacy on the biology of Sitotruga cerealella (Oliv.) The observations taken on fecundity, hatching, developmental period and adult emergence indicated that the fecundity and percentage of egg hatching was significantly lowest in grains treated with petroleum ether extract of E.terticurnis 0.2% followed by T.terrestris 0.2%. The developmental period was prolonged in grains treated with T.terrestris 0.2% and the per cent adult emergence was lowest in A.calumus 0.2 and 0.15 per cent
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