Herbicide agent composition

A herbicidal composition (I) comprises: (a) at least one sulfonamide herbicide; (b) at least one non-silicone surfactant and (c) at least one humectant. Independent claims are included for: (i) the preparation of (I) by mixing (a), (b) and (c), preferably by a tank mixing method; and (ii) the use of a herbicidal composition containing at least one sulfonyl urea of formula (A) (or its salt) for controlling Bromus plants. [Image] R 1COOT; R 2CH 2NHR a; R aacyl (preferably SO 2T); R 3H or T; X, Y : Q, OQ, SQ, 3-6C cycloalkyl, 2-6C alkenyl, 2-6C alkynyl, 3-6C alkenyloxy or 3-6C alkynyloxy (preferably T or OT); Z' : CH or N; Q : 1-6C alkyl (optionally substituted by one or more of halo, OT and ST); T : 1-4C alkyl. ACTIVITY : Herbicide. In post-emergence tests against Bromus tectorum, the degree of damage caused by mesosulfuron-methyl at 10 g/ha (i) alone, (ii) in combination with 300 g/ha Genapol LRO (RTM; sodium 12/14C fatty alcohol diglycol ether sulfate surfactant) at 300 g/ha or (iii) in combination with 300 g/ha Genapol LRO (RTM) at 300 g/ha plus sodium lactate (humectant) at 150 g/ha was (i) 12.5%, (ii) 12.5% or (iii) 42.5%. MECHANISM OF ACTION : Acetolactate synthetase inhibitor.