Insecticidal seed coating

An insecticidal coating for a corn seed comprising:

• a) one or more binders selected from the group consisting of polymers and copolymers of polyvinyl acetate, methyl cellulose, polyvinyl alcohol, vinylidene chloride, acrylic, cellulose, polyvinylpyrrolidone and polysaccharide.
• b) An insecticidally effective amount of an insecticide according to general formula (I) ##STR4## in which A is an unsubstituted or mono- to tetrasubstituted, aromatic or non-aromatic, monocyclic or bicyclic heterocyclic radical, where one to two of the substituents of A can be selected from the group consisting of halo-C.sub.1 -C.sub.3 alkyl, cyclopropyl, halocyclopropyl, C.sub.2 -C.sub.3 alkenyl, C.sub.2 -C.sub.3 alkynyl, halo-C.sub.2 -C.sub.3 alkenyl, halo-C.sub.2 -C.sub.3 alkynyl, halo-C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkylthio, halo-C.sub.1 -C.sub.3 alkylthio, allyloxy, propargyloxy, allythio, propargylthio, haloallyloxy, haloallylthio, cyano and nitro, and one to four of the substituents of A can be selected from the group consisting of C.sub.1 -C.sub.3 alkyl, C.sub.1 C.sub.3 alkoxy and halogen;
• R is hydrogen, C.sub.1 -C.sub.6 alkyl, phenyl-C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.2 -C.sub.6 alkynyl;
• and
• X is N--NO.sub.2 or N--CN,
• or a tautomer thereof, in each case in free form or in salt form, optionally in combination with one or more insecticides selected from the group consisting of imidacloprid, imidacloprid analogs, organophosphates, phenylpyrazoles, pyrethroids, and combinations thereof,
• for the control of Diabrotica or its larvae;
• and
• c) one or more fillers
• wherein the binder forms a matrix for the insecticide and filler on the corn seed and the filler is present in an amount effective to prevent or reduce the phytotoxic effect on the corn seed caused by the insecticide.