Vol. 5, Issue 1, Part B (2023)

This study investigates the growth and productivity of Bt cotton (Gossypium hirsutum) across three distinct agro-climatic zones in India: tropical, subtropical, and arid regions. By analyzing key growth parameters and productivity indicators such as plant height, number of branches, boll weight, boll count per plant, fiber length, and fiber strength, the research aims to determine the optimal conditions for maximizing yield and improving cotton quality. Field trials were conducted from June 2022 to March 2023 using a randomized complete block design with three replications in each zone. The results showed significant differences in growth and productivity across the zones, with the tropical zone demonstrating the most favorable conditions. These findings provide valuable insights into the adaptability and performance of Bt cotton, informing agricultural practices and policy decisions to enhance productivity and economic benefits for farmers.