EM4806 Horse Waste and Land Management Manual. Merry Farrington, Washington State Horse Council. This manual discusses the importance of clean water as a resource for Washington's fish, shellfish, and human populations, and how horse owners/managers can better control the impacts horses have on water quality and land condition. The discussion covers water quality protections; the effects of animal waste in waterways; backcountry horsehandling measures; land management problems such as overcrowding, overgrazing, and runof; pasture management, including the advantages and disadvantages of various grasses and legumes; and stall waste management, including bedding and flooring, waste storage and disposal, and the use of waste as a resource. Supplemented with photographs, a list of 8 key steps in establishing good pasture management, and a recommended reading list. Reprinted September 1994. 20 pages. $3.50.