Application of bispyribac-sodium 25 g/ha at 15 DAT recorded significantly lower total weed population  and higher grain (6.47 t/ha) and straw yield (7.66 t/ha) as compared to pretilachlort 750 g/ha at 5 DAT. The nutrient uptake by weeds for N,P and K was significantly higher with unweeded check (12.32, 2.78 and 20.28 kg/ha, respectively). Whereas the lowest uptake was noticed with bispyribac-sodium 35 g/ha at 15 DAT (1.02, 0.21 and 1.62 kg/ha, respectively). The nutrient uptake by rice for N, P, and K was significantly higher with bispyribac-sodium 25 g/ha at 15 DAT (122.66, 15.74 and 164.51 kg/ha, respectively) as compared to unweeded check (78.24, 9.99 and 105.58 kg/ha, respectively). Similar trend was observed with net returns and B:C ratio.