Efficacy of Pongamia Oil Soap against Earias vitella and Helicoverpa armigera in Okra

Field evaluation of pongamia oil soap against Earias vitella and Helicoverpa armigera infesting okra was carried out during 2018-19 at the Instructional farm in College of Agriculture, Padannakkad. The treatments consisted of 0.6, 1 and 2% pongamia oil soap, Neem oil soap (0.6%); soap solution (0.5%); quinalphos (0.05%) and control (water). Fourteen days after the third application the shoot damage was found lowest in quinalphos 25EC 0.05% (7.32) followed by pongamia oil soap 2% (12.86) and fruit damage was found lowest in quinalphos 25EC 0.05% (6.41) followed by pongamia oil soap 2% (9.60). The reduction in fruit and shoot damage may be due to the feeding deterrency of pongamia oil which remained effective for seven days and thereafter declined.