PYRIDYLOXY-PHENOXY-ALKANOIC ACID DERIVATIVES , PROCESSES FOR THEIR PREPARATION AND THEIR USE AS HERBICIDES OR PLANT GROWTH REGULATORS

摘要

Herbicidal and plant growth-regulating pyridyloxy-phenoxyalkanecarboxylic acid derivatives of the formula wherein A is cyano or carboxyl, an ester, thioester or amido radical or the salt of the carboxylic acid with a cation or a quaternary ammonium group, Z is hydrogen, halogen, cyano, nitro, C1-C4 alkyl or C1-C4 alkoxy, D is hydrogen, halogen, cyano, nitro or C1-C4 alkoxy, E is halogen, trifluoromethyl or cyano.