Abstract: The herbicidal agents containing a compound of the formula (A) ##STR1## in which R denotes ##STR2## in which X denotes chlorine or bromine and Y denotes H or chlorine, and R.sub.1 denotes H, alkyl, alkinyl or one equivalent of a cation, in combination with a compound of the formula (B) ##STR3## in which R.sub.2 denotes bromine or iodine and R.sub.3 denotes H, NH.sub.4, an alkali metal cation or (C.sub.1 -C.sub.8)-alkyl, or with a compound of the formula (C) ##STR4## in which R.sub.4 denotes H, (C.sub.1 -C.sub.8)-alkyl or one equivalent of a cation, with the condition that if, in formula (A), R denotes ##STR5## combinations of the compound of the formula (A) with compounds of the formula (B) are excluded.

Abstract: Combinations of herbicides of the formula (I) ##STR1## wherein R denotes H, alkyl or one cation equivalent, with herbicides of the formula (II) ##STR2## wherein X denotes Cl or Br, Y denotes H or Cl and Z denotes alkyl, and if X is Br, Y must be Cl, possess surprising synergistic properties in controlling weeds.