Herbicidal pyridinesulfonamides

A compound of the formula I or II ##STR91## wherein R is H or CH.sub.3 ;

• R.sub.1 is H, Cl, Br, SCH.sub.3 or CH.sub.3 ;
• n is 0, 1 or 2;
• W is O or S;
• Q is selected from the group consisting of ##STR92## n' is 0 or 1;
• R.sub.5, R.sub.6 and R.sub.7 are independently H or CH.sub.3 ;
• R.sub.5 ' is H, CH.sub.3, C.sub.2 H.sub.5, C.sub.1 -C.sub.3 alkylthio, SCH.sub.2 CH.dbd.CH.sub.2, SCF.sub.2 H, OCH.sub.3 or OCH.sub.2 CH.sub.3 ;
• R.sub.8 is H or Cl;
• R.sub.9 and R.sub.10 are independently H, CH.sub.3 or OCH.sub.3 ;
• R.sub.11 and R.sub.12 are independently CH.sub.3 or OCH.sub.3 ;
• W' is O, S or NR.sub.13 ;
• and
• R.sub.13 is H, C.sub.1 -C.sub.3 alkyl or CH.sub.2 CH.dbd.CH.sub.2 ;
• A is ##STR93## X is CH.sub.3, OCH.sub.3, OCH.sub.2 CH.sub.3, CH.sub.2 F, OCH.sub.2 CH.sub.2 F, OCH.sub.2 CHF.sub.2, OCH.sub.2 CF.sub.3 or CF.sub.3 ;
• Y is H, C.sub.1 -C.sub.2 alkyl, OCH.sub.3, OC.sub.2 H.sub.5, CH.sub.2 OCH.sub.3, NHCH.sub.3, N(OCH.sub.3)CH.sub.3, N(CH.sub.3).sub.2, CF.sub.3, SCH.sub.3, OCH.sub.2 CH.dbd.CH.sub.2, OCH.sub.2 C.tbd.H, CH.sub.2 OCH.sub.2 CH.sub.3, OCH.sub.2 CH.sub.2 OCH.sub.3, CH.sub.2 SCH.sub.3, ##STR94## SCF.sub.2 H or cyclopropyl;
• m is 2 or 3;
• L.sub.1 and L.sub.2 are independently O or S;
• R.sub.2 is H or CH.sub.3 ;
• R.sub.3 and R.sub.4 are independently C.sub.1 -C.sub.2 alkyl;
• Z is N;
• and
• X.sub.3 is CH.sub.3 or OCH.sub.3 ;
• provided that
• when W is S, then R is H, A is A-1, and Y is CH.sub.3, OCH.sub.3, OC.sub.2 H.sub.5, CH.sub.2 OCH.sub.3, C.sub.2 H.sub.5, CF.sub.3, SCH.sub.3, OCH.sub.2 CH.dbd.CH.sub.2, OCH.sub.2 C.tbd.CH, OCH.sub.2 CH.sub.2 OCH.sub.3, CH(OCH.sub.3).sub.2 or ##STR95## and their agriculturally suitable salts.