There are six Management Units in Pullman, Washington, conducting research on grain and legume genetics, plant germplasm introduction and testing, animal diseases, integrated pest management, soil erosion, air and water quality, cereal crop diseases, wheat root diseases and biological control. ARS in Pullman is located primarily on the Washington State University campus.  Research is done on campus as well as several sites throughout Washington State, including Mount Vernon, Walla Walla, Central Ferry and Lind, as well as Arizona, California, Alaska, Montana, and Idaho, including a research site on the University of Idaho campus.