The present invention relates to a concentrate, comprising:a) 100 to 400 g/l of a dinitroaniline；b) 5 to 100 g/l of an imidazolinone ammonium salt or substituted ammonium salt；c) 20 to 100 g/l of water；d) 15 to 150 g/l of an anionic surface-active substance which has at least one sulfonic acid group；e) 5 to 100 g/l of a polymeric, nonionic surface-active substance which has at least one polyethylene oxide group and at least one radical selected from poly-C3-C4-alkylene oxide groups；f) 50 to 250 g/l of a nonionic surface-active substance selected from ethoxylated fatty acid esters of polyhydroxyl compounds, alkyl polyglucosides, ethoxylated C4-C16-alkylphenols and ethoxylated C8-C22-alkanols；g) a hydrocarbon solvent ad 1 l； where the quantitative data of components a) to f) in g/l are based on the total volume of the active ingredient concentrate.
