Difluoromethyl-nicotinic indanyl carboxamides of the formula in which T represents an oxygen or sulfur atom; n represents 0; Q represents hydrogen, methylsulfonyl, ethylsulfonyl, n- or isopropylsulfonyl, n-, iso-, sec- or tert-butylsulfonyl, methoxymethyl, methoxyethyl, ethoxymethyl, ethoxyethyl, trifluoromethylsulfonyl, or trifluoromethoxymethyl; R a represents hydrogen; Y represents CR 3 R 4; R 1, R 2, R 3, R 4, R 5 and R 6 independently of one another represent hydrogen, fluorine, chlorine, bromine, iodine; C 1 -C 12 -alkyl; C 1 -C 6 -haloalkyl having 1 to 9 identical or different halogen atoms; C 3 -C 6 -cycloalkyl; (C 3 -C 6 -cycloalkyl)-C 1 -C 6 -alkyl; (C 3 -C 6 -cycloalkyl)-C 3 -C 6 -cycloalkyl; C 1 -C 12 -alkoxy; C 3 -C 6 -cycloalkyloxy; (C 3 -C 6 -cycloalkyl)-C 1 -C 6 -alkyloxy; or R 1 and R 2 can form together with the carbon to which they are attached a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl; or may form the group =C(Y 1)Y 2 or a group =N-O- R c; or R 3 and R 4 can form together with the carbon to which they are attached a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl; or may form the group =C(Y 1)Y 2; or R 5 and R 6 can form together with the carbon to which they are attached a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl; or may form the group =C(Y 1)Y 2 or a group =N-O-R c; R c represents C 1 -C 8 -alkyl; C 1 -C 4 -haloalkyl having 1 to 9 identical or different fluorine, chlorine or bromine atoms; C 3 -C 6 -cycloalkyl; (C 3 -C 6 -cycloalkyl)-C 1 -C 4 -alkyl; C 2 -C 6 -alkenyl-C 1 -C 8 -alkyl; C 2 -C 6 -alkynyl-C 1 -C 8 -alkyl; aryl-C 1 -C 4 -alkyl; Y 1 and Y 2 independently of one another represent fluorine, chlorine, bromine, methyl; ethyl, propyl, isopropyl. T represents an oxygen or sulfur atom; n represents 0; Q represents hydrogen, methylsulfonyl, ethylsulfonyl, n- or isopropylsulfonyl, n-, iso-, sec- or tert-butylsulfonyl, methoxymethyl, methoxyethyl, ethoxymethyl, ethoxyethyl, trifluoromethylsulfonyl, or trifluoromethoxymethyl; R a represents hydrogen; Y represents CR 3 R 4; R 1, R 2, R 3, R 4, R 5 and R 6 independently of one another represent hydrogen, fluorine, chlorine, bromine, iodine; C 1 -C 12 -alkyl; C 1 -C 6 -haloalkyl having 1 to 9 identical or different halogen atoms; C 3 -C 6 -cycloalkyl; (C 3 -C 6 -cycloalkyl)-C 1 -C 6 -alkyl; (C 3 -C 6 -cycloalkyl)-C 3 -C 6 -cycloalkyl; C 1 -C 12 -alkoxy; C 3 -C 6 -cycloalkyloxy; (C 3 -C 6 -cycloalkyl)-C 1 -C 6 -alkyloxy; or R 1 and R 2 can form together with the carbon to which they are attached a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl; or may form the group =C(Y 1)Y 2 or a group =N-O- R c; or R 3 and R 4 can form together with the carbon to which they are attached a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl; or may form the group =C(Y 1)Y 2; or R 5 and R 6 can form together with the carbon to which they are attached a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl; or may form the group =C(Y 1)Y 2 or a group =N-O-R c; R c represents C 1 -C 8 -alkyl; C 1 -C 4 -haloalkyl having 1 to 9 identical or different fluorine, chlorine or bromine atoms; C 3 -C 6 -cycloalkyl; (C 3 -C 6 -cycloalkyl)-C 1 -C 4 -alkyl; C 2 -C 6 -alkenyl-C 1 -C 8 -alkyl; C 2 -C 6 -alkynyl-C 1 -C 8 -alkyl; aryl-C 1 -C 4 -alkyl; Y 1 and Y 2 independently of one another represent fluorine, chlorine, bromine, methyl; ethyl, propyl, isopropyl.