HERBICIDE COMPOSITION, PROCESS FOR COMBATING WEEDS, PROCESSES FOR PREPARING A REPLACED 1,2,4-TRIAZOLE- (4,3-A) PYRIDINE AND A N '- (2-PYRIDIL) REPLACED HYDRAZONE, AS WELL AS 1, 2,4-TRIAZOLO- (4,3-A) REPLACED PYRIDINES AND N '- (2-PYRIDYL) REPLACED HYDRAZONS

摘要

The invention provides herbicidal compositions comprising relates to new substituted 1,2,4-triazolo-[4,3-a]pyridines of general formula I CHEM and substituted N'-(2-pyridyl)hydrazones of general formula II CHEM in which A and R1-4 have the meanings given in the description. Many compounds are novel and form part of the invention.