A field experiment was carried out at Department of Agronomy, Anbil Dharmalingam Agricultural College and Research Institute, Trichy during Rabi, 2018 to study the effect of different weed management practices on nutrient removal, nutrient uptake andgrain yield of transplanted rice. The experiment was laid out in split plot design with four main plot and five sub plot treatments and replicated thrice. The experimental plot size was 20 m². Main plot treatments were pre plant application of herbicides namely, glyphosate 2.5 kg ha^-1, glufosinate ammonium 1.0 kg ha^-1,halosulfuron methyl 67.5 g ha^-1 and control. Sub plot treatments consisted of different weed management practices in transplanted rice namely, pre emergence application of bensulfuron methyl + pretilachlor 660 g ha^-1 on 3 DAT + one hand weeding on 45 DAT, post emergence application of bispyribac sodium 25 g ha^-1 on 15 DAT + one hand weeding on 45 DAT, application of bensulfuron methyl + pretilachlor 660 g ha^-1 on 3 DAT + bispyribac sodium 25 g ha^-1 on 25 DAT, hand weeding twice at 25 and 45 DAT and unweeded control. Pre plant herbicides sprayed 15 days before puddling. The rice variety TRY 3 was grown during the course of investigation. Pre plant application of glyphosate 2.5 kg ha^-1 recorded significantly lower total weed density (18.1 and 16.7 m^-2), lower total weed dry weight (14.5 and 15.0 g m^-2) at 40 and 60 DAT respectively, lesser nutrient removal by weeds (6.25, 1.33 and 5.36 NPK kg ha^-1, respectively at 40 DAT), higher nutrient uptake by crops (124.6, 32.3 and 81.5 NPK kg ha^-1, respectively at maturity), higher dry matter production (11517 kg ha^-1) and higher grain yield(4232 kg ha^-1)than halosulfuron methyl and control. These results are closely followed by glufosinate ammonium 1.0 kg ha^-1.Among the weed management practices fallowed in transplanted rice, hand weeding twice on 25 and 45 DAT resulted significantly lower total weed density (11.8 and 9.4 m^-2), lower total weed dry weight (8.9 and 6.9 g m^-2) at 40 and 60 DAT respectively, lesser nutrient removal by weeds (3.84, 0.81 and 3.29 NPK kg ha^-1, respectively at 40 DAT), higher nutrient uptake by crops (130.6, 33.8 and 86.4 NPK kg ha^-1, respectively at maturity) and higher dry matter production (12075 kg ha^-1)than other treatments. Higher grain yield(4327 kg ha^-1) was obtained with post emergence application of bispyribac sodium 25 g ha^-1 on 15 DAT + one hand weeding on 45 DAT.

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