A use of compounds of formula wherein A is a fused saturated or unsaturated, 4- to 7-membered carbocycle or a fused saturated or unsaturated, 4- to 7-membered heterocycle having 1, 2 or 3 heteroatoms or heteroatom moieties, selected from O, S, SO, SO 2, N or NR 7 as ring members, R 1 is selected from the group consisting of H and C 1 -C 6 -alkyl; R 2 is selected from the group consisting of H and C 1 -C 6 -alkyl; R 3 is selected from the group consisting of H, halogen, OH, CN, amino, NO 2, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 1 -C 6 -alkoxy, C 2 -C 6 -alkenyloxy, C 2 -C 6 -alkynyloxy, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkyl, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkoxy, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkenyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkynyl, where the aliphatic parts of the aforementioned radicals are unsubstituted, partly or completely halogenated; R 4 is selected from the group consisting of H, halogen, OH, CN, amino, NO 2, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 1 -C 6 -alkoxy, C 2 -C 6 -alkenyloxy, C 2 -C 6 -alkynyloxy, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkyl, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkoxy, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkenyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkynyl, where the aliphatic parts of the aforementioned radicals are unsubstituted, partly or completely halogenated; R 5 is selected from the group consisting of H, halogen, OH, CN, amino, NO 2, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 1 -C 6 -alkoxy, C 2 -C 6 -alkenyloxy, C 2 -C 6 -alkynyloxy, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkyl, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkoxy, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkenyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkynyl, where the aliphatic parts of the aforementioned radicals are unsubstituted, partly or completely halogenated; R 6 is selected from the group consisting of H, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkenyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkynyl, phenyl, phenyl-C 1 -C 6 -alkyl, where the aliphatic and phenyl parts of the aforementioned radicals are unsubstituted, partly or completely halogenated; R 7 is selected from the group consisting of H, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl; including their agriculturally acceptable salts for controlling unwanted vegetation. A is a fused saturated or unsaturated, 4- to 7-membered carbocycle or a fused saturated or unsaturated, 4- to 7-membered heterocycle having 1, 2 or 3 heteroatoms or heteroatom moieties, selected from O, S, SO, SO 2, N or NR 7 as ring members, R 1 is selected from the group consisting of H and C 1 -C 6 -alkyl; R 2 is selected from the group consisting of H and C 1 -C 6 -alkyl; R 3 is selected from the group consisting of H, halogen, OH, CN, amino, NO 2, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 1 -C 6 -alkoxy, C 2 -C 6 -alkenyloxy, C 2 -C 6 -alkynyloxy, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkyl, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkoxy, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkenyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkynyl, where the aliphatic parts of the aforementioned radicals are unsubstituted, partly or completely halogenated; R 4 is selected from the group consisting of H, halogen, OH, CN, amino, NO 2, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 1 -C 6 -alkoxy, C 2 -C 6 -alkenyloxy, C 2 -C 6 -alkynyloxy, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkyl, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkoxy, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkenyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkynyl, where the aliphatic parts of the aforementioned radicals are unsubstituted, partly or completely halogenated; R 5 is selected from the group consisting of H, halogen, OH, CN, amino, NO 2, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 1 -C 6 -alkoxy, C 2 -C 6 -alkenyloxy, C 2 -C 6 -alkynyloxy, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkyl, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkoxy, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkenyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkynyl, where the aliphatic parts of the aforementioned radicals are unsubstituted, partly or completely halogenated; R 6 is selected from the group consisting of H, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl, (C 1 -C 6 -alkoxy)-C 1 -C 6 -alkyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkenyl, (C 1 -C 6 -alkoxy)-C 3 -C 6 -alkynyl, phenyl, phenyl-C 1 -C 6 -alkyl, where the aliphatic and phenyl parts of the aforementioned radicals are unsubstituted, partly or completely halogenated; R 7 is selected from the group consisting of H, C 1 -C 6 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl;