Vol. 9, Special Issue 3, Part D (2025)

Experiment was conducted at Regional Cotton Research Station, Navsari Agriculture University, Bharuch during 2019-20 to 2021-22. Experiment comprised of 13 treatments in Bt cotton under rainfed condition with 4 replication. All treatments were applied 30 days after cessation of rain. Biochemical parameters were analyzed 7 days after treatment application. Yield and yield attributes were recorded at harvest. Relative water content and chlorophyll stability index were found significantly higher in T₄ treatment (87.18% and 96.10 except T₁) while specific leaf weight was higher in T₁₁ treatment. Proline content was found highest in T₆ followed by T₃. Plant height, No. of sympodia were significantly differed among treatments. No. of boll per plant was significantly highest in T₁₁ and T₁₃ treatments while boll weight was higher in T₃ treatment followed by T₄ and T₁₃. Seed cotton yield was found higher in T₄ treatments.