This regulation establishes a tolerance for residues of the insecticide cyfluthrin: [cyano[4-fluoro-3-phenoxyphenyl]-methyl-3-[2,2- dichloroethenyl]-2,2-dimethyl-cyclopropanecarboxylate] in or on potatoes at 0.01 parts per million (ppm). It also removes time limitations for tolerances for residues of cyfluthrin on sweet corn, field corn, and pop corn (including forage and fodder). Bayer Corporation requested this tolerance under the Federal Food, Drug, and Cosmetic Act, as amended by the Food Quality Protection Act of 1996.