| 摘要 |
Compounds of Formula I, and their N-oxides and agriculturally-suitable salts, are disclosed which are useful for controlling undesired vegetation <IMAGE> I wherein: <IMAGE> Q-1 <IMAGE> Q-2 T is O or S; W is a single bond, O, S or NR6; X is N or CH; Y is N or CH; Z is N or CR7 provided that when Z is CR7, then Y is N; R6 is H, CH3 or OCH3; m is 1 or 2; and R1, R2, R3, R4, R5, and R7 are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula I and a method for controlling undesired vegetation which involves contacting the vegetation or its environment with an effective amount of a compound of Formula I.
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