| 摘要 |
The novel herbicidal active ingredient combinations consisting of (1) a heteroaryloxyacetamide of the general formula (I) <IMG> (I) in which Het, R1 and R2 have the meanings given in the description (= active ingredients of group 1) and (2) a known herbicidal active ingredient from group 2, which comprises the substance classes consisting of the phenyl- and benzothiazolylureas, dinitroanilines, triazines, triazinones, sulphonylureas, imidazolinones, pyridinecarboxamides and diphenyl ethers, exhibit synergistic effects in certain weight ratios and can be used as selective herbicides in various crop plants (for example wheat, barley and maize). Synergistic active ingredient combinations of N-iso-propyl-N-(4-fluorophenyl)-(5-trifluoromethyl-1,3,4-thiadiazol-2-yl-oxy)-acetamide and isoproturon, methabenzthiazuron or metribuzine may be mentioned as examples.
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