International Science Community Association International Research Journal of Environmental Sciences 2319 - 1414 6 4 2017 04 22 An assessment of antifeedant potential of azadirachtin, a plant product of Azadirachta indica, against papilio demoleus L. (lepidoptera: papilionidae) larvae 1 5 EN Srinivasa Rao Vattikonda 1 Department of Zoology, Nizam College, Osmania University, Hyderabad, Telengana State, India Sabita Raja Sangam 2 Department of Zoology, Nizam College, Osmania University, Hyderabad, Telengana State, India > Research Paper 2016 8 25 2017 04 22 The lemon butterfly Papilio demoleus is the most serious pests whose larval forms causes the serious damage by cultivated species of citrus during their various stages of development. Presently scientists focus their research and efforts to develop eco-friendly pest control methods, one of the most accepted and suitable method is natural antifeedants. So controlling this larva plant products are introduced in this study the Azadirachtin a secondary metabolite isolated from Azadirachta indica was evaluated their antifeedant activity against fourth instar larvae of Papilio demoleus using no-choice leaf bioassay method, feeding activity is related to food utilization at different concentrations of 200, 150, 100 and 50ppm the antifeedant index calculated over 24 hrs. and 48 hrs. Results showed that the Azadirachtin treated larvae showed maximum antifeedant activity of 86.28% and 70.43% at 200ppm concentration. The antifeedant activity were increased with increasing concentration. Azadirachtin could also be considered for use in the management of pests. Copyright@ International Science Community Association