| 摘要 |
Herbicidal and plant growth-regulating pyridiyloxy-phenoxyalkanecarboxylic acid derivatives of the formula <IMAGE> 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.
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