Weed management in rainfed lowland rice (Oryza sativa) under transplanted conditions

A field experiment was conducted at Ghaghra-ghat, Bahraich (U.P,) on rice ( Oryza sativa L.) during wet season of 1994 and 1995. Pre-emergence applicat ion of mixture of anilofos + 2,4-DEE (0.4 + 0.5 kg/ha) recorded lower weed dry weight and higher grain yield than rest of the herbicidal mixtures and their single applications. Weed free up to 60 DAT gave higher weed control efficiency and grain yield followed by 2 hand weedings and anilofos + 2,4-D EE (0.4 + 0.5 kg/ha). Weeds caused a reduction in grain yield to the tune o f 47.85% when compared with weed free up to 60 DAT. The depletion through w eeds was the lowest in weed free up to 60 DAT whereas this treatment being on par with 2 hand weedings recorded higher N uptake by crop than other tre atments.