The invention relates to novel selective herbicides that contain an effective amount of an active combination that comprises (a) 2-(2-methoxycarbonyl-phenylsulfonylaminocarbonyl)-4-methyl-5-propoxy-2,4-dihydro-3H-1,2,4-triazole-3-one of the formula (I) and/or one or more salts of the compound of formula (I), especially the sodium salt thereof, and (b) a compound that improves the tolerability for cultivated plants and that is selected from the following groups of compounds: α-(1,3-dioxolane-2-yl-methoximino)-phenylacetonitril (oxabetrinil), α-(cyanomethoximino)-phenylacetonitril (cyometrinil), 4-chloro-N-(1,3-dioxolane-2-yl-methoxy)-α-trifluoro-acetophenonoxim (fluxofenim), 4,6-dichloro-2-phenyl-pyrimidine (fenclorim), 4-dichloroacetyl-3,4-dihydro-3-methyl-2H-1,4-benzoxazine (benoxacor), 5-chloro-quinoxaline-8-oxy acetic acid (1-methyl-hexylester) (cloquintocet), 2,2-dichloro-N-(2-oxo-2-(2-propenylamino)-ethyl)-N-(2-propenyl)-acetamide (DKA-24), 1,8-naphthalic acid anhydride, 1-(2,4-dichloro-phenyl)-5-trichloromethyl-1H-1,2,4-triazole-3 carboxylic acid-ethylester (fenchloroazolethyl), 2-chloro-4-trifluoromethyl-thiazole-5 carboxylic acid-phenylmethylester (flurazole), 3-dichloroacetyl-5-(2-furanyl)-2,2-dimethyl-oxazolidine (furilazole, MON-13900), 4-dichloroacetyl-1-oxa-4-aza-spiro[4.5]-decane (AD-67), 2-dichloromethyl-2-methyl-1,3-dioxolane (MG-191), 2,2-dichloro-N-(1,3-dioxolane-2-yl-methyl)-N-(2-propenyl)-acetamide (PPG-1292), 2,2-dichloro-N,N-di-2-propenyl-acetamide (dichlormide), N-(4-methyl-phenyl)-N'-(1-methyl-1-phenyl-ethyl) urea (dymron), 1-dichloroacetyl-hexahydro-3,3,8a-trimethylpyrrolo[1,2-a]-pyrimidine-6(2H)-one (BAS-145138), N-(2-methoxy-benzoyl)-4-(methylaminocarbonylamino)-benzolsulfonamide and other safeners and antidotes described in the description as well as 2,4-dichlorophenoxy acetic acid (2,4-D) and its derivatives.