Evaluation of New Molecules against Bollworm Complex of Cotton

Investigations on new insecticides against bollworm complex of cotton were carried out at PAU, Regional Station, Faridkot during kharif 2004–05 and 2005–06. During 2004–05 season, Spinosad 45 SC @ 67.5 g ai ha⁻¹ (standard check) was found to be the most effective treatment with lowest boll damage (6.07%) and loculi damage ((268%). The seed cotton yield in case of Spinosad 45 SC with new A:D ratio @ 100 g ai ha⁻¹ was highest (3001 kg ha⁻¹). During 2005–06 season also significant differences were observed among various treatments tested, with untreated control recording the highest open boll damage (51.0%), loculi damage (21.14%) and recording lowest seed cotton yield (2114.8 kg ha⁻¹). Spinosad 45 SC @ 67.5 g ai ha⁻¹ (standard check) recorded 35.23% boll damage, 13.12% loculi damage and 3150.4 kg ha⁻¹ seed yield. The insecticide E2Y 45 20 SC @ 30g ai ha⁻¹ was also the most effective treatment recording lower boll damage (29.37%), loculi damage (11.16%) and highest seed cotton yield (3369.9 kg ha⁻¹).