Response of Bt cotton to different plant growth regulators

Experiment was conducted at Regional Cotton Research Station, Navsari Agriculture University, Surat during 2020-2021 to 2022-23. No. of square drops were found non-significant due to different chemicals treatment. No. of boll drops were found non-significant due to different chemicals treatment in BT cotton except at 110DAS. Foliar application of Naphthelicaceatic acid @ 20 ppm at 45, 65 & 85 DAS significantly effect on Plant height, No. of boll per plant and seed cotton yield. No. of sympodia, Boll weight and leaf reddening were non-significant in among all treatments.