Karnal Bunt; Regulated Areas in Arizona, California, and Texas

We are amending the Karnal bunt regulations to make changes to the list of areas or fields regulated because of Karnal bunt, a fungal disease of wheat. We are adding the Buckeye/Pretoria area of Maricopa County, AZ, to the list of regulated areas. We are also removing Throckmorton and Young Counties, TX, portions of Riverside County, CA, and certain areas in La Paz, Maricopa, and Pinal Counties, AZ, from the list of regulated areas based on our determination that those fields or areas meet our criteria for release from regulation. These actions are necessary to prevent the spread of Karnal bunt to noninfected areas of the United States and to relieve restrictions on certain areas that are no longer necessary.