An investigation was undertaken with the objective of studying the seasonal incidence of pink bollworm in Bt cotton and its association with weather parameters at the research farm, Department of Entomology, VNMKV, Parbhani Maharashtra in the year 2022-2023. Seasonal incidence observed in a separate plot, revealed that the larval damage was maximum in 49th and 50th SMW revealing the larval population was highest before the boll opening stage of the crop and at the time of harvesting. Rosette flowers, per cent green boll damage and locule damage were observed highest in 45th, 44th and 48th SMW, respectively. In correlation with weather parameters, all the observations recorded exhibited an overall negative non-significant relation and all the parameters investigated.

Pectinophora gossypiella, Bt cotton seasonal incidence, rosette flower, green boll damage, locule damage, weather parameters

The impact of pink bollworm on rosette flower formation, fruiting bodies, green bolls, larval population, locules, and open bolls analysed in the Kharif, 2022-23. Studies analysing correlations between pest populations and weather patterns have revealed that factors such as rainfall, maximum and minimum temperatures, morning and evening relative humidity and wind speed can all affect pest populations in diverse patterns of influence

Nutalapati Vaishnavi, D.R. Kadam and Marella Sai Manoj (2024). Seasonal Incidence of Pink Bollworm Pectinophora gossypiella (Saunders) on Bt Cotton and Influence of Weather Parameters. Biological Forum – An International Journal, 16(6): 10-14.