| 摘要 |
Herbicidal composition used in method of preventing, for a time, growth of troublesome perennial grasses and sedges by incorporation of the composition into a surface layer of the soil of a field plot infested with the tubers and/or underground stems of such weeds and primarily above such tubers and stems. The composition is made up of alpha -(2,2,2-trichloroethyl)-m-chlorostyrene or alpha -(2,2,2-trichloroethyl)-m-bromostyrene or a co-mixture thereof and a suitable liquid or solid carrier to provide an emulsifiable concentrate, a wettable powder, a tank mix, a dust composition or a granulated solid composition.
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