2012•Hubei nongye kexueRequires access
Effects of Wettable Powder Mixed with Quinclorac and Pyrazosulfuron for Control of Weeds in Direct Sowing Rice Fields
Jun Zhang
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Abstract
Trials were conducted to evaluate the effects of wettable powder mixed with quinclorac and pyrazosulfuron for control of weeds,as well as the effects of the absorption of nitrogen and crop yield.The results showed that 20% quinclorac and pyrazosulfuron WP had good control effects on Echinochloa crusgalli(L.) Beauv,Monochoria vaginalis(Burm.F.),Rotala indica,Cyperus difformis L.in broacasted rice fields.The overall fresh control effects and density control effects were over 94% at 150～270 g / hm2,and siginificantly higer than 50% quinclorac WP and 10% pyrazosulfuron WP.The application of 20% quinclorac and pyrazosulfuron WP siginificantly reduced the weeds absorption of nurition and water,resulting in prominent yield enhancing.