Laboratory experiments were conducted to test the antifeedant biopotency of Mantisalca duriaei (Spach) Briq. et Cavill. Chrysanthemum cinerariaefolium (trev.) Vis.), Cichorium intybus (Chicory), Inula racemosa Hook. f, Reichardia tingitana Linn. Roth, Rhaponticum acaule (L.) DC. Scorzonera undulata Vahl. Spilanthes paniculata Well ex. DC Mantisalca duriaei (Spach) Briq. et Cavill. and Tagetes minuta L. in different concentrations (0.50%, 1.0% and 2.0%) against 3rd instar, 24 hrs starved larvae of Diamond Back Moth (DMB), Plutella xylostella Linn. The plant extract of Mantisalca duriaei gave the highest antifeedancy. It is evident that Mantisalca duriaei was most effective, which have maximum protectivity with least EC values i.e. 0.011 and placed on the top on the merit, 50 where as Chromolaena odorata, the least effective gave maximum EC values i.e. 0.416. On the basis of their respective 50 EC values, the protectivity responses of selected astereceous plant are summarized as under : Mantisalca duriaei 50 (0.011) > Reichardia tingitana (0.013) > Rhaponticum acaule (0.185) > Scorzonera undulata (0.295) > Inula racemosa (0.156) > Tagetes minuta (0.164) > Spilanthes paniculata (0.212) > Chrysanthemum cinerariaefolium (0.288) > Cichorium intybus (0.392) > Chromolaena odorata (0.416), respectively.