This regulation establishes a time-limited tolerance for residues of hexythiazox in or on sugar beet root. This action is associated with the utilization of a crisis exemption under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) authorizing use of the pesticide on sugar beets. This regulation establishes a maximum permissible level for residues of hexythiazox in or on sugar beet root. The time-limited tolerance expires on December 31, 2019.