Herbicidal 2,6-substituted pyridines

摘要

A herbicidal composition which comprises a carrier and, as active ingredient, a compound of the general formula in which each of n and m independently is 0 or 1; each of Ar<1> and Ar<2> independently represents an aryl group, at least one of Ar<1> and Ar<2> being substituted by one or more of the same or different substituents selected from halogen atoms, alkyl groups, alkoxy groups, haloalkyl groups and haloalkoxy groups; and R<1> represents a hydrogen atom, or an alkyl, alkylthio or haloalkyl group having from 1 to 4 carbon atoms, and R<2> represents a hydrogen or a halogen atom provided that at least one of R<1> and R<2> represents a hydrogen atom. Certain compounds of formula I are novel.