| abstract |
Described are herbicidal-substance combinations consisting of (1) a heterocyclic aryloxyacetamide of general formula (I) in which Het, R?1 and R2¿ are as defined in the description (i.e. a substance selected from groups) and (2) a prior art herbicidal substance selected from the group 2, comprising the phenyl- and benzothiazolylureas, dinitroanilines, triazines, triazinones, sulphonylureas, imidazolinones, pyridinecarboxamides and diphenyl ethers. Such combinations exhibit, at particular ratios of the components, synergistic effects and can be used as selective herbicides on various types of plant crop (e.g. wheat, barley and maize). Examples of such synergistic combinations are 5-trifluoromethyl-1,3,4-thiadiazol-2-yloxyacetic acid N-isopropyl-N-(4-fluorophenyl)-amide plus isoproturone, methabenzthiazurone or metribuzine. |