Pyridine derivatives and their use as herbicides

摘要

Pyridine derivatives of the formula <IMAGE> (I) where R1 is alkylideneaminoxy which is unsubstituted or monosubstituted or disubstituted by alkoxy, alkylthio or phenyl, cycloalkylideneaminoxy which is unsubstituted or monosubstituted or disubstituted by alkyl, succinyliminoxy or azolyl which is unsubstituted or monosubstituted or disubstituted by alkyl or halogen, R2 and R3 are each alkyl, haloalkyl, alkoxy, haloalkoxy or alkylthio, R4 is hydrogen, halogen, alkyl, haloalkyl or alkoxy, and Z is nitrogen or the methine group, and their use for combating unwanted plant growth.