| By field efficacy test method, this study determined the effect of 60% Butachlor+Oxadiazon EC on weeds
and investigated the close and rice safety in direct seeded rice field during 2011 in South China. The results showed that
the control efficiency on grasses weeds Echinochloa crusgalli (L.) Beauv., Leptochloa chinensis (L.) Nees and cyperaceae
weeds Cyperus iria L., Fimbristylis miliacea (L.) Vahl was good by 720耀900 g a.i./hm2 60% Butachlor+Oxadiazon EC
before rice seedling emergence in the field. The rice was safety with the recommended dose, but phytotoxicity would appear
with higher concentration and latter could return. |
