Biphenyl substituted spirocyclic ketoenol derivatives (I), are new. Biphenyl substituted spirocyclic ketoenol derivatives of formula (I), are new. X : halo, (halo)alkyl or (halo)alkoxy； Z : optionally substituted fluorophenyl； W 1>；, Y 1>；H, halo, (halo)alkyl or (halo)alkoxy； CKE : pyrrolone derivative of formula (a) or furone derivative of formula (b)； CAB 1>；optionally saturated cyclic compound (optionally substituted and containing at least a heteroatom)； G : H, E or a group of formula (-CO-R 1>；), (-C(=L)-M-R 2>；), (-SO 2-R 3>；), (-P(=L)(R 4>；)(R 5>；)) or (-C(=L)-N(R 6>；)(R 7>；))； E : metal ion or ammonium ion； L, M : O or S； R 1>；alkyl, alkenyl, alkoxyalkyl, alkylthioalkyl, polyalkoxyalkyl (all optionally substituted with halo), cycloalkyl (interrupted through at least a heteroatom and optionally substituted with halo, alkyl or alkoxy), phenyl, phenylalkyl, hetaryl, phenoxyalkyl or hetaryloxyalkyl； R 2>；alkyl, alkenyl, alkoxyalkyl, polyalkoxyalkyl (all optionally substituted with halo), cycloalkyl, phenyl or benzyl (all optionally substituted)； R 3>；-R 5>；alkyl, alkoxy, alkylamino, dialkylamino, alkylthio, alkenylthio, cycloalkylthio (all optionally substituted with halo) or phenyl, benzyl, phenoxy or phenylthio (all optionally substituted)； and either R 6>；, R 7>；alkyl, cycloalkyl, alkenyl, alkoxy, alkoxyalkyl (all optionally substituted with halo), phenyl or benzyl (both optionally substituted) or H； or NR 6>；R 7>；a ring optionally interrupted by O or S. Independent claims are included for: (1) the preparation of (I)； (2) an agent comprising active substance combination of (I) and at least a compound, which improves the compatibility of culture plant, e.g. 4-dichloroacetyl-1-oxa-4-aza-spiro[4.5]-decane, 1-dichloroacetyl-hexahydro-3,3,8a-trimethylpyrrolo[1,2-a]-pyrimidin-6(2H)-one, 4-dichloroacetyl-3,4-dihydro-3-methyl-2H-1,4-benzoxazine, 5-chloro-quinolin-8-oxy-acetic acid-(1-methyl-hexylester), 3-(2-chloro-benzyl)-1-(1-met
