A compound of formula (I) wherein, R 1 is hydrogen; R 2 is C 2-8 -alkyl; R 3 is methyl; or R 4 and R 5 are independently selected from the group consisting of hydrogen, X, CN, S(O) n R', OR", C 1-8 -alkyl, C 2-8 -alkenyl, C 2-8 -alkynyl, C 1-8 -haloalkyl and C 3-8 -cycloalkyl; R 6 and R 7 are independently selected from the group consisting of hydrogen, X, CN, OR', C 1-6 -alkyl, C 2-6 -alkenyl, and C 3-6 -cycloalkyl; R 8 and R 9 are independently selected from the group consisting of hydrogen, X, CN, (C=O)-R", C 1-6 -alkyl, C 1-6 -alkoxy; or R 8 and R 9 together with the atom to which they are attached may form a group of =C(R'R′′′), or =NR′′′; A is selected from the group consisting of C 6 -aryl; said ring A is optionally substituted by one or more groups of R 10 ; R 10 is selected from the group consisting of X, CN, NOz, N(R") 2 , S(O) n R", C 1-6 -alkyl, C 1-8 -haloalkyl, C 1-6 -alkoxy, C 1-6 -alkylthio, C 1-6 -haloalkoxy, C 1-6 -haloalkylthio, C 3-6 -cycloalkyl, C 3-8 -cycloalkyloxy, C 3-8 -cycloalkylthio; X represents halogen; R' is selected from the groups consisting of hydrogen, straight chain or branched chain C 1-6- alkyl and cyclic C 3-8 -alkyl; wherein each group of R' is optionally substituted by one or more X; R" is selected from the groups consisting of hydrogen, NR' 2 , OR', straight chain or branched chain C 1-6 -alkyl, C 1-6 -haloalkyl and cyclic C 3-8 -alkyl; wherein each group of R" is optionally substituted by one or more groups selected from the group consisting of X, R', OR', and CN, R'" is selected from the groups consisting of hydrogen, straight chain or branched chain C 1-6 -alkyl and cyclic C 3-8 -alkyl; all of the groups mentioned above may be substituted by one or more X; n represents an integer wherein, n=0, 1 or 2; and agronomically acceptable salts, or stereo-isomers thereof. R 1 is hydrogen; R 2 is C 2-8 -alkyl; R 3 is methyl; or R 4 and R 5 are independently selected from the group consisting of hydrogen, X, CN, S(O) n R', OR", C 1-8 -alkyl, C 2-8 -alkenyl, C 2-8 -alkynyl, C 1-8 -haloalkyl and C 3-8 -cycloalkyl; R 6 and R 7 are independently selected from the group consisting of hydrogen, X, CN, OR', C 1-6 -alkyl, C 2-6 -alkenyl, and C 3-6 -cycloalkyl; R 8 and R 9 are independently selected from the group consisting of hydrogen, X, CN, (C=O)-R", C 1-6 -alkyl, C 1-6 -alkoxy; or R 8 and R 9 together with the atom to which they are attached may form a group of =C(R'R′′′), or =NR′′′; A is selected from the group consisting of C 6 -aryl; said ring A is optionally substituted by one or more groups of R 10 ; R 10 is selected from the group consisting of X, CN, NOz, N(R") 2 , S(O) n R", C 1-6 -alkyl, C 1-8 -haloalkyl, C 1-6 -alkoxy, C 1-6 -alkylthio, C 1-6 -haloalkoxy, C 1-6 -haloalkylthio, C 3-6 -cycloalkyl, C 3-8 -cycloalkyloxy, C 3-8 -cycloalkylthio; X represents halogen; R' is selected from the groups consisting of hydrogen, straight chain or branched chain C 1-6- alkyl and cyclic C 3-8 -alkyl; wherein each group of R' is optionally substituted by one or more X; R" is selected from the groups consisting of hydrogen, NR' 2 , OR', straight chain or branched chain C 1-6 -alkyl, C 1-6 -haloalkyl and cyclic C 3-8 -alkyl; wherein each group of R" is optionally substituted by one or more groups selected from the group consisting of X, R', OR', and CN, R'" is selected from the groups consisting of hydrogen, straight chain or branched chain C 1-6 -alkyl and cyclic C 3-8 -alkyl; all of the groups mentioned above may be substituted by one or more X; n represents an integer wherein, n=0, 1 or 2; and agronomically acceptable salts, or stereo-isomers thereof. <EOS>