Impact of Different IPM Modules for Soybean Pod Borer Helicoverpa armigera and Predators

Field trials were carried out to study the influence of different IPM Modules on incidence of Helicoverpa armigera (Hub.) and their predators on soybean during Kharif season of the year 2009 and 2010 at Department of Entomology, Marathwada Krishi Vidyapeeth, Parbhani (Maharashtra, India). The experiment consisted of Marathwada Agricultural University (MAU) IPM modules, National Research Centre for Soybean (NRCS) IPM module, Biointensive IPM (BIPM) module, chemical control and untreated control was laid out in randomized block design with four replications. The results based on pooled data revealed that significantly minimum number of larvae of H. armigera (Hub.) was observed in MAU module (3.45 larvae/MRL) which was significantly superior over rest of the treatments. The next best results were observed in chemical control (4.60 larvae/MRL) followed by NRCS module (5.14 larvae/MRL) which were at par with each other. However BIPM module (8.29 larvae/MRL) was also found significantly superior to untreated control. Lowest per cent pod damaged by H. armigera was observed in MAU module (4.40%) which was found significantly superior to rest of the modules. The next best module was NRCS module (5.90%) followed by chemical control treatment (6.18%) which were found at par with each other and significantly superior to BIPM and untreated control. However, the next best module was BIPM (9.89%) which was found statistically significant over untreated control. Significantly maximum per cent pod damaged by H. armigera was observed in untreated control (13.94%). Highest population of predators was observed in untreated control followed by BIPM, MAU module and NRCS module which were found at par with each other. Significantly lowest population of predators was observed in chemical control. The highest I.C.B.R. 1:4.91 was obtained in MAU IPM module, followed by NRCS IPM module (1:4.73) and chemical control (1:3.71).