The invention provides herbicide combinations and the use of herbicide combinations for controlling harmful plants in cereal crops wherein the herbicide combination in question comprises (A) a herbicide from the group of glufosinate derivatives of the formula (A1) in which Z represents hydroxyl, —NHCH(CH3)CONHCH(CH3)COOH or —NHCH(CH3)CONHCH[CH2CH(CH3)2]COOH, or an ester or salt thereof, and (B) a herbicide from the group of carboxylic acid derivatives of the formula (B1) in which X represents N or CH and R represents CO2H or a herbicidally active derivative thereof, and the cereal crops are tolerant, if appropriate in the presence of safeners, to the herbicides (A) and (B) present in the combination.