| 摘要 |
Compounds of Formula (1), their N-oxides and agriculturally suitable salts, are disclosed which are useful for controlling undesired vegetation, wherein A, R<1>, R<2a>, R<2b>, W, Y, and Z are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula (1) and a method for controlling undesired vegetation which involves contacting the vegetation or its environment with an effective amount of a compound of Formula (1).
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