Studies on Method of Establishment and Weed Management Practices on Growth and Yield of Rice (Oryza sativa L.) Under Irrigated Condition.

The field experiment was conducted during the Kharif season of, 2018 at Agronomy Research Farm of Narendra Deva University of Agriculture and Technology (Kumarganj) Ayodhya (U.P.). The experiment consisted of three rice establishment method viz; transplanting, drum seeded and direct-seeded method and five weed management technique viz; Pyrazosulfuron-ethyl 10% WP @ 30 g/ha at 5 days after sowing(DAS)/days after transplanting (DAT), Almix (chlorimuron-ethyl + Metsulfuron-methyl) @ 4 g/ha at 10 DAS/DAT, Bispyribac-sodium @ 25 g/ha at 30 DAS/DAT, Hand weeding at 20 and 40 DAS/DAT and Weedy check making fifteen treatment combination which was assigned in a factorial RBD replicated thrice. Results showed that the transplanting method of rice establishment promoted growth attributes viz; the plant height, number of tillers, leaf area index, dry matter accumulation at all crop stages except 30 days stages, the yield attribute viz; effective tiller, length of panicle, number of grain/panicle and test weight, biological, grain and straw yield ha-1 over Drum and Direct methods of rice establishment of NDR-2065 variety of rice. The use of hand weeding practices twice of weed management techniques enhanced the growth parameters viz. initial plant population, plant height, number of tillers, leaf area index and dry matter accumulation, yield attributes viz; effective tiller, number of grain/panicle, length of panicle, test weight, yields viz; biological yield, grain yield, straw yield and harvest index followed by bispyribac sodium @ 25 g ha-1 at 30 DAS/DAT, Pyrazosulfuron-ethyl 10% WP @ 30 g ha-1, Almix @ 4 g ha-1 and Weedy check during study year, respectively. Therefore, used method of transplanting for rice establishment with two hand weeding practices of weed management technique proved to be growth and yield attributes and yields of NDR-2065 variety of rice during study year. [ABSTRACT FROM AUTHOR]