Performance of four Bt and non Bt cotton hybrids with three irrigation levels and two water saving practices were studied during summer, 2007 and 2008 on clayey soils. The application of irrigation at 75 mm CPE significantly increased the number of sympodia and green bolls/plant. However, the monopodia and plant height was found significantly more under 50 mm CPE irrigation than 100 mm CPE. Water saving practices did not show any significant effect on morphological traits and quality parameters. Bt and non Bt cotton hybrids expressed their genetical potential. The height was significantly more in Kashinath Bt than all other cotton hybrids owing to its genetical character, while green bolls, sympodia and boll weight were significantly more in Dhroov Bt than other cotton hybrids. The maximum seed cotton was obtained in Dhroov Bt (31.46 q/ha) than Dhroov non Bt (27.48 q/ha) followed by Kashinath Bt (20.21 q/ha) and Nathbaba non Bt (24.61 q/ha). Kashinath Bt found significantly superior in quality parameters than other cotton hybrids.
