A field investigation was conducted to assess the incidence of pink bollworm in cotton-growing areas of Fulambri block, Chhatrapati Sambhajinagar district, Maharashtra. Ten cotton farmers cultivating different cotton genotypes across seven villages were selected for the study. Observations were recorded on boll damage, locule damage, and larval population of pink bollworm under field conditions. The results indicated considerable variation in infestation levels among the selected fields. Boll damage caused by pink bollworm ranged from 20 to 60 per cent, with an average infestation of 40 per cent. Similarly, locule damage varied between 5 and 60 per cent, recording an average of 19.75 per cent. Presence of pink bollworm larvae was also observed in several fields, with an average larval population of 0.30 larvae per 20 bolls. The findings revealed that pink bollworm infestation remains a serious threat to cotton cultivation in the region, causing substantial damage to developing bolls and locules, ultimately affecting yield and fibre quality. Variations in infestation among different genotypes and villages suggest the possible influence of crop management practices, varietal susceptibility, and environmental conditions. Continuous monitoring and adoption of integrated pest management strategies are essential for effective management of pink bollworm in cotton ecosystems of Maharashtra.

Keywords: Pink Bollworm; Cotton; Boll Damage; Locule Damage; Maharashtra.