Effect of Herbicides in Relation to Varying Water Regimes in Controlling Weeds in Direct Seeded Puddled Rice

Anilofos at 0.45 kg ha−1 reduced density of C. iria and E. colona by 59.5 and 61.0%, respectively, resulting in 50.6% increase in grain yield over untreated. Butachlor at 1.5 kg ha−1 proved to be next effective herbicide in controlling the weeds. Metsulfuron-methyl+chlorimuron-ethyl at 4 g ha−1 provided excellent control of broad-leaved weeds and sedges. All the herbicides under test performed well when applied in presence of standing water.