Efficacy of New Generation Herbicides on Yield and Economics of Direct Seeded Rice

A field experiment was conducted during kuruvai season of 2020 to evaluate the efficacy of new generation herbicides on yield and economics of direct seeded rice. The major weeds found were Echinochloa crus-galli, Echinochloa colonum among grasses, Cyperus rotundus, Cyperus difformis among sedges and Bergia Capensis, Eclipta alba among broad-leaved weeds. The results revealed that, early post emergence application of bispyribac sodium (200ml/ha) followed by (fb) one hand weeding on 40 DAS recorded significantly lower weed population at 30 and 60 DAS, lower weed dry matter production at 30 and 60 DAS, higher weed control index and higher grain yield (5695 kg/ha), net returns (Rs.68568/ha) and higher returns per rupee invested (Rs.2.43).