The invention relates to selective herbicidal compositions that comprise an effective amount of an active compound combination comprising(a) one or more compounds of the formula (I) in which Q1, Q2, R1, R2, R3 and R4 are as defined in the disclosure—and salts of the compounds of the formula (I)— and (b) at least one of the crop-plant-compatibility-improving compounds listed in the disclosure. The invention further relates to the use of these compositions for controlling undesirable vegetation and to a process for preparing the compositions according to the invention.