Studies were carried out on the effect of micronutrients on spotted bollworm, Earias vittella F. infestation and yield components in cotton crop under field conditions. Cotton variety (CRIS-134) was sown in randomized block design with seven treatments including control (check) and was replicated three times on May 22, 2004-2005. Three micronutrients Bonus®, Dawn ®and Power® were applied three times at 79, 95 and 109 days after sowing. The results indicated that there was no significant effect of removal of leaves and fruiting bodies on infestation of bollworm. However, application of micronutrients significantly affected the bollworm infestation. There was significant effect of micro-nutrients on boll volume and opening of bolls in different micronutrients applied plots. The maximum yield was obtained from Bonus® applied plots than other micronutrients applied plots.
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