| abstract |
A herbicidal composition which comprises a carrier and, as active ingredient, a N-aryl triazole of the general formula I:- <CHEM> wherein 2 of X1, X2 and X3 represent a nitrogen atom and the third represents a group C-R2; Z represents a covalent bond, a methylene or imino group, or an oxygen or sulphur atom; R1 represents an optionally substituted alkyl, aralkyl, alkenyl, cycloalkyl, cycloalkenyl, heteroaryl or aryl group; R2 represents a hydrogen or halogen atom or an optionally substituted aryl or alkyl group; and Ar represents an optionally substituted aryl group; the use of such triazoles as herbicides; certain novel triazoles within formula I and their preparation. |