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In the present study, the influence of intercrops on the incidence of major pests of cotton was studied in different IPM modules. In Dharwad module, Amrasca devastans, Bemisia tabaci and Aphis gossypii recorded preference ratios of 1.60, 0.82 and 1.29, respectively towards bhendi. A. devastans and A. gossypii showed preference ratios of 1.51 and 1.17 respectively, towards bhendi, in TNAU IPM module whereas they did not prefer any intercrop in Guntur IPM module. B. tabaci recorded preference ratios less than one in TNAU, Guntur IPM modules and farmers’ practice towards the intercrops. Earias spp. showed more preference on bhendi and registered 2.69 and 2.08 as preference ratios in Dharwad and TNAU IPM modules whereas it showed no preference to intercrops / trap crops in Guntur module and in farmers’ practice. The preference ratios of Helicoverpa armigera were 1.08 and 1.13 on bhendi in Dharwad and TNAU IPM modules while in Guntur IPM module and farmers’ practice the intercrops were less preferred compared to cotton. The leaf eating caterpillar Spodoptera litura preferred castor, sunflower and bhendi more than that of cotton in TNAU IPM module whereas the preference was more towards castor and groundnut in Guntur IPM module. The cotton semiloopers Anomis flava, Xanthodes graellsi and Tarache nitidula recorded 0.93, 2.54 and 0.05 in Dharwad module and 1.95, 3.91 and 0.22 in TNAU module as preference ratios on bhendi, respectively. Thrips tabaci, pink boll worm Pectinophora gossypiella and stem weevil Pempherulus affinis showed no preference to the intercrops/trap crops in all the modules.
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