New strains of Drechslera spp., and weed control agents and weed control compositions containing the same
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0464416A2
公开(公告)日:1992-01-08
Described are new strains of Drechslera spp., which possess herbicidal effects against all varieties of barnyard grass, i.e., Echinochloa spp. as weed but do not give any influence to crops under cultivation such as rice. Weed control agents according to the present invention, which contain one or more of the novel strains, have high safety and selectivity, thereby providing practical control effects against barnyard grass. Weed control compositions according to the present invention, which contain one or more of the new strains in combination with one or more chemical herbicides, have sufficient herbicidal effects even at dosages which are too low to permit control of weeds when they are applied singly, thereby making it possible to reduce the dosage of herbicides. The weed control compositions can therefore contribute to the prevention of environmental pollution and the occurrence of weeds with acquired pesticide resistance.
本发明描述了 Drechslera 属的新菌株,它们对所有品种的稗草(即作为杂草的 Echinochloa 属)都具有除草效果,但不会对水稻等栽培作物造成任何影响。根据本发明的杂草控制剂含有一种或多种新型菌株,具有很高的安全性和选择性,因此对稗草具有实际的控制效果。根据本发明的除草组合物含有一种或多种新菌株,并与一种或多种化学除草剂结合使用,具有足够的除草效果,即使在单独使用时,由于剂量太低而无法控制杂草,从而可以减少除草剂的用量。因此,这种除草组合物有助于防止环境污染和获得性抗药性杂草的出现。