To amend conservation and biofuels programs of the Department of Agriculture to promote the compatible goals of economically viable agricultural production and reducing nutrient loads in the Chesapeake Bay and its tributaries by assisting agricultural producers to make beneficial, cost-effective changes to cropping systems, grazing management, and nutrient management associated with livestock and poultry production, crop production, bioenergy production, and other agricultural practices on agricultural land within the Chesapeake Bay watershed, and for other purposes.