Herbicidal sulfonamides

A compound of the formula:

• ##STR117## wherein R.sub.1 is F, Cl, Br, CF.sub.3, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkyl, NO.sub.2, CO.sub.2 R.sub.4, SO.sub.2 R.sub.5, SO.sub.2 NR.sub.6 R.sub.7, SO.sub.2 N(OCH.sub.3)CH.sub.3, SO.sub.2 OCH.sub.2 CF.sub.3, OSO.sub.2 R.sub.5 or CH.sub.2 L;
• L is SO.sub.2 NR.sub.6 R.sub.7, OCH.sub.3, OC.sub.2 H.sub.5, CO.sub.2 CH.sub.3 or CO.sub.2 C.sub.2 H.sub.5 ;
• R.sub.2 is H, Cl, Br, F, CF.sub.3 or OCH.sub.3 ;
• R.sub.4 is C.sub.1 -C.sub.3 alkyl, CH.sub.2 CH.dbd.CH.sub.2, CH.sub.2 CH.sub.2 Cl, or CH.sub.2 CH.sub.2 OCH.sub.3 ;
• R.sub.5 is C.sub.1 -C.sub.3 alkyl or CF.sub.3 ;
• R.sub.6 and R.sub.7 are independently C.sub.1 -C.sub.3 alkyl;
• R.sub.8 is H or CH.sub.3 ;
• R.sub.9 is H or C.sub.1 -C.sub.3 alkyl;
• R.sub.3 is ##STR118## W is O or S;
• X is CH.sub.3, OCH.sub.3 or Cl;
• Y is CH.sub.3, C.sub.2 H.sub.5, OCH.sub.3, OC.sub.2 H.sub.5, CH.sub.2 OCH.sub.3, NH.sub.2, NHCH.sub.3 or N(CH.sub.3).sub.2 ;
• Z is CH or N;
• X.sub.1 is H, Cl, CH.sub.3, OCH.sub.3 or OC.sub.2 H.sub.5 ;
• X.sub.2 is CH.sub.3, C.sub.2 H.sub.5, OCH.sub.3 or OC.sub.2 H.sub.5 ;
• X.sub.3 is CH.sub.3 or OCH.sub.3 ;
• and
• Y.sub.1 is CH.sub.3 or OCH.sub.3 ;
• and their agriculturally suitable salts;
• provided that:
• (1) when W is S, then R.sub.8 is H;
• (2) the total number of carbon atoms of R.sub.6 and R.sub.7 is less than or equal to 4;
• and
• (3) when X is Cl, then Z is CH and Y is NH.sub.2, NHCH.sub.3, N(CH.sub.3).sub.2 or OCH.sub.3.