The U.S. Department of Agriculture has set a May 1 deadline for getting the Dairy Forage Research Center Farm in Sauk County into compliance with state and federal laws that protect water quality. Since 2002, all Wisconsin farmers have been required to prepare annual Nutrient Management Plans to protect our lakes, streams, and groundwater from polluted agricultural runoff. And according to the Sauk County Land Conservation Department, federal agencies such as the U.S. Department of Agriculture are not exempted from these requirements.