The USDA, NADC )National Animal Disease Center), located in Ames, IA is seeking a contractor to plant seed corn that will be harvested as corn for use in feeding research animals at the National Anima... The USDA, NADC )National Animal Disease Center), located in Ames, IA is seeking a contractor to plant seed corn that will be harvested as corn for use in feeding research animals at the National Animal Disease Center (NADC). Vendor will be required to supervise all areas of the operation in which they are responsible.