Effects of 17% Wettable Powder Mixed with Bensulfuron Methyl and Pendimethalin for Control of Weeds in Transplanted Rice Fields

By field trials,control effect of 17% bensulfuron methyl + pendimethalin WP against weeds in transplanted rice field was studied.Besides,trials were conducted to evaluate its effects or crop yield and the absorption of nitrogen,phosphorus,kalium and moisture.The results showed that excellent weed control performance was achieved 50 days after 17% bensulfuron methyl + pendimethalin WP was applied.And with the dosage of 89.25~255.00 kg/hm2,the density control effects of Echinochloa crusgalli(L.) Beauv,Monochoria vaginalis(Burm.F.) and Cyperus difformis L.were respectively 88.45%～99.44%,97.64%～100.00% and 85.76%～99.03%,and fresh control effects of them were respectively 91.63%～98.56%,95.91%～100.00% and 86.89%～99.38% which was higher than 33% pendimethalin EC and 10% bensulfuron-methyl WP.The application of 17% bensulfuron methyl + pendimethalin WP siginificantly reduced the weeds absorption of nurition and water,resulting in prominent yield enhancing.