Herbicidal compositions

A composition comprising a synergistic herbicidally effective amount of:

• (a) a urea herbicide having the formula (I)
• R11N(R12)CON(R13)R14 (I)
• wherein R11 represents an optionally substituted phenyl or thiadiazol-2-yl group, R12 represents hydrogen or straight or branched chain alkyl having from 1 to 6 carbon atoms, R13 represents straight or branched chain alkyl having from 1 to 6 carbon atoms or a 2-methylcyclohexyl group and R14 represents hydrogen or straight or branched chain alkyl or alkoxy having from 1 to 6 carbon atoms with the exception of diuron;
• and
• (b) a 4-benzoylisoxazole herbicide or a 2-cyano-1,3-dione herbicide, an enolic tautomeric form thereof, or an agriculturally acceptable salt or metal complex thereof;
• in association with an agriculturally acceptable diluent and/or carrier;
• wherein the urea herbicide of (a) and the 4-benzoylisoxazole herbicide or 2-cyano-1,3-dione herbicide, enolic tautomeric form thereof, or agriculturally acceptable salt or metal complex thereof of (b) have a synergistic herbicidal effect.