A composition contains an active agent combination of: 2-(2-chloro-3-(2,2,2-trifluoroethoxymethyl)-4-methylsulfonyl-benzoyl)-cyclohexane-1,3-dione (I) and at least one of about 55 other specific herbicides, e.g. ethoxysulfuron, formasulfuron, atrazine, 2,4-D, dicamba, acetochlor, pendimethalin, diflufenican, glyphosate or glufosinate. A herbicidal composition contains an active agent combination of: (a) 2-(2-chloro-3-(2,2,2-trifluoroethoxymethyl)-4-methylsulfonyl-benzoyl)-cyclohexane-1,3-dione (I) or its salt and (b) at least one other herbicide selected from: (i) the branched aminoacid biosynthesis inhibitors ethoxysulfuron, flumetsulam, halosulfuron, imazamox, imazapyr, imazaquin, imazethapyr, metosulam, nicosulfuron, primisulfuron, prosulfuron, rimsulfuron, thifensulfuron-methyl, triflusulfuron and foramsulfuron (ii) the photosynthesis electron transport inhibitors ametryne, atrazine, bromoxynil, cyanazine, diuron, hexazinone, metribuzin, pyridate and terbuthylazine (iii) the synthetic auxins 2,4-D, clopyralid, dicamba, diflufenzopyr and fluroxypyr (iv) the fatty acid biosynthesis inhibitors butylate, EPTC and fenoxaprop-P-ethyl (v) the mitosis inhibitors acetochlor, alachlor, dimethenamid, flufenacet, mefenacet, metolachlor, thenylchlor and S-metalochlor, (6) the protoporphyrinogen oxidase inhibitors fluthiacet-methyl and carfentrazone-ethyl (vi) the hydroxyphenyl pyruvate dioxygenase inhibitors isoxaflutole, mesotrione, sulcotrione and 4-(4-trifluoromethyl-2-methylsulfonyl-benzoyl)-5-hydroxy-1-methyl-3-methylpyrazole (vii) glyphosate (viii) pendimethalin (ix) trifluralin (x) asulam (xi) triaziflam (xii) diflufenican and (xiii) glufosinate-ammonium. The weight ratio of (A) to (B) is 1-2000:2000-1. An independent claim is also included for a method for controlling undesirable weed growth, involving applying the combination of (A) and (B) to at least part of the plants or to the plant growth area. ACTIVITY : Herbicide. In post-emergence tests, the herbicidal ratin
