Effect of pre- and post-emergence herbicides on weed flora in direct seeded rice (Oryza Sativa l.) under eastern Uttar Pradesh condition

Abstract

An experiment was conducted during the Kharif 2022 at Agricultural Research Farm of the Tilak Dhari Post Graduate College Jaunpur U. P. The experiment was laid out in RBD with ten treatments including viz. three levels of Bispyribac sodium post-emergence (PoE), Butachlor pre-emergence (PE), Pendimethalin (PE), Pendimethalin (PE) followed by (fb)one hand weeding, Pretilachlor (PoE), two hand weeding, Weedy check and weed free and three replications for efficient weed management in dry cultivated rice. Significantly lower weed flora was recorded with weed-free, which was at par with two-hand weeding at 20 and 40 DAS, pendimethalin 1000 g/ha (PE) fb one-hand weeding at 40 DAS. Similarly, the highest weed control efficiency (WCE) and the lowest weed index (WI) were also recorded with weed-free treatment followed by two-hand weeding and pendimethalin1000 kg/ha (PE) fb one-hand weeding at 40 DAS.