R. Srinivasarao and P. Raghuramireddy
Abstract
A field trial was conducted in five locations of Khammam District of Telangana State during kharif season of 2015 to 2017. The experimental results revealed that the significant improvement on both growth and yield attributes. The maximum growth and yield in terms of plant height (88.4, 92,5, 85.4 and 88.7cm), no of effective tillers (254, 276,243 and 257.6), no of plants (36, 42, 34 and 37) per square meter, no of panicles (245, 267,237 and 249.6) per square meter, test weight (18.3,19.5,17.6 and 18.5 g) and grain yield (6125, 6175,5260 and 5853kg ha-1) and higher gross returns (Rs.104125, 104975,89420 and 99507) pooled respectively, were higher in dry converted wet rice than manual transplanting under delayed conditions. Among the rice varieties MTU-1061 exhibited superiority with respect to plant height (93.4,98.6, 90.8 and 94.1cm), no of effective tillers (254, 276,243 and 263.3), number of plants (36, 42, 34 and 37) per square meter, no of panicles (245, 267,237 and 257.3) per square meter, test weight (18.3,19.5,17.6 and 19.7 g) and grain yield (6125, 6175,5260 and 5726 kg ha-1) and higher gross returns (Rs.104125, 104975,89420 and 97342) pooled respectively. The lowest growth and yield attributes were observed under delayed transplanting. Duly application of PE-Pyrasosulfuron ethyl 200 g ha-1 followed by 250 ml ha-1 of Bispyribacsodium herbicides showed good performance in terms of yield and yield attributes in dry convert wet rice over delayed transplanting due to reduced weed infestation, at critical period of weed competition, there by timely controlled weed growth and weeds interfere with normal crop growth by heavy competition for available nutrients, light and water.