HERBICIDAL COMPOSITIONS CONTAINING 1,2-DIALKYL-3, 5-DIARYL-PYRAZOLIUM SALTS, AND SOME NOVEL PYRAZOLIUM SALTS

摘要

A B S T R A C TA salt of a compound of the following formula:wherein R1 is methyl; R2 is alkyl C1-C4; Y,Y', Z and Z'each independently-represent halogen, hydrogen, methyl ormethoxy; with the proviso that only one phenyl ring is sub-stituted on the carbon para to the pyrazolium ring and abroadleaf weed-or grass herbicidal nitro substituted pheno-late, polyhalocarboxylate or methyl substituted phenoxy-acetate.