The invention relates to novel compounds of the formula (I)in which R1, R2, R3, R4, R5, Y, Q and G have the meanings given above,to a plurality of processes and intermediates for their preparation and to their use as herbicides and/or pesticides.Moreover, the invention relates to selective herbicidal compositions comprising, firstly, the phenyl-substituted bicyclooctane-1,3-dione derivates and, secondly, a crop plant compatibility-improving compound.The present invention furthermore relates to increasing the activity of crop protection compositions comprising in particular phenyl-substituted bicyclooctane-1,3-dione derivates by adding ammonium salts or phosphonium salts and, if appropriate, penetrants, to the corresponding compositions, to processes for their preparation and to their use in crop protection as pesticides and/or for preventing unwanted plant growth.
