Vol. 11, Issue 9 (2022)

Author(s):
Priya, Dr. RK Shukla, Dr. TD Pandey, Dr. Dinesh Pandey, Dr. Yushma Sao, Dr. NK Chaure and Potnuru Leena's

Abstract:
During the kharif season 2021, a field experiment was conducted at the Instructional-cum-Research Farm, Barrister Thakur Chhedilal College of Agriculture and Research Station, Bilaspur (C.G.) to evaluate the "Studies on weed management under transplanted rice condition." The experiment was laid out with 7 treatments viz., T₁: Weed control, T₂: One hand weeding at 20 DAT, T₃: Two hand weeding at 20 and 40 DAT, T₄: Pyrazosulfuron-ethyl @ 20 g a.i./ha as pre emergence, T₅: Bispyribac sodium @ 25 g a.i./ha as post emergence, T₆: Pyrazosulfuron-ethyl @ 20 g a.i./ha as pre emergence at 0-5 DAT + Bispyribac sodium @ 25 g a.i./ha as post emergence and T₇: Weed free in randomised block design with three replications. Among the different weed management practises at 30, 60, 90 DAT and at harvest, weed control (T₇) allowed the lowest total weed density (2.79 and 3.13 m̄²), fresh and dry weight of weed (4.41 and 2.22, 4.97 and 2.47 g m-2), and highest weed control efficiency (75.05 and 80.97%) and was found to be very effective against weed flora in transplanted rice, followed by Pyrazosulfuron ethyl @ 20g a.i./ha as PE at 0-5 DAT + Bispyribac sodium @ 25g a.i./ha as a PoE at 20-25 DAT. According to the data, significant improvements in growth parameters, yield attributes, and seed yield (5066 kgha^-1) were obtained.