The invention relates to a herbicidal agent containing the following: A) one or more sulfonylureas of general formula (I) wherein R1 is C2-C4-alkoxy or CO-Ra, wherein Ra is equal to OH, C¿1?-C6-alkoxy or NR?bRc¿, wherein R?b and Rc¿ independently of each other, are the same or different and are H or C¿1?-C6-alkyl, R?2¿ is halogen or (A)¿n-NR?dRe, wherein n is equal to zero or 1, A is a group CRfRg, wherein R?f and Rg¿, independently of each other, are the same or different and are H or C1-C6-alkyl, Rd is equal to H or C¿1?-C6-alkyl and R?e¿ is H, C¿1?-C6-alkyl or an acyl radical, and wherein R?d and Re¿ can also form a heterocyclical ring; and R2 can also be H if R1 is equal to C¿2?-C4-alkoxy; R?3¿ is H or C¿1?-C6-alkyl; m is equal to zero or 1; x and Y, independently of each other, are the same or different and are C1-C6-alkyl, C1-C6-alkoxy or C1-C6-alkylthio, each of the three aforementioned radicals being unsubstituted or substituted with one or more radicals from the following group: halogen, C1-C4-alkoxy and C1-C4-alkylthio, or C3-C6-cycloalkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-alkenyloxy or C3-C6-alkynyloxy, preferably C1-C4-alkyl or C1-C4--alkoxy; and Z is equal to CH or N; and/or their salts; and B) one or more tensides containing at least 10 alkylene oxide units as a structural element.