How to control pink bollworm in BT cotton (kapas)?

Pink bollworm control needs monitoring plus timely action, not blind spraying. Install pheromone traps at 8 to 10 per acre from squaring stage and count male moths. When you catch 8 or more moths per trap per night, or see rosetted flowers and exit holes in green bolls, start control. Release Trichogramma cards if available, and on threshold spray a recommended insecticide such as profenofos, thiodicarb, or chlorantraniliprole, rotating chemical groups so resistance does not build. Open 20 green bolls weekly to check live larvae. The biggest tools are free, do first picking on time, finish the crop and uproot stalks by January to February, and never extend the crop with frego or late irrigation. Confirm doses with your local KVK label recommendation.

A caution on sprays, do not keep repeating the same molecule because pink bollworm develops resistance very fast. Read the label for the pre harvest interval, especially once bolls are opening and you are about to pick, so there is no chemical residue on the lint. If you are unsure which groups to rotate this season, your KVK or the cotton entomologist at the state university can give the current spray window.