Karnal Bunt; Regulated Areas

We are amending the Karnal bunt regulations by removing from regulated areas any noninfected acreage that is more than 3 miles from a field or area associated with a bunted wheat kernel. This action reduces the size of the areas that are regulated because of Karnal bunt in La Paz, Maricopa, and Pinal Counties of Arizona. We are also specifying that mechanized harvesting equipment must be cleaned and disinfected before leaving a regulated area only if it has been used to harvest host crops that test positive for Karnal bunt. This action relieves restrictions on the movement of mechanized harvesting equipment from all areas regulated because of Karnal bunt. These actions will not result in a significant risk of spreading Karnal bunt.