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EFFECTS OF MANURE AMENDMENTS ON ENVIRONMENTAL AND PRODUCTION PROBLEMS
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 759-776 in Animal Agriculture and the Environment: National Center for Manure and Animal Waste Management White Papers. J. M. Rice, D. F. Caldwell, F. J. Humenik, eds. 2006. St. Joseph, Michigan: ASABE. .
Authors: Philip A. Moore, Jr., Brad C. Joern, Dwayne R. Edwards, C. Wes Wood, Tommy C. Daniel
A number of different problems are associated with animal manures. These include ammonia (NH3) emissions to the atmosphere, excessive non-point source phosphorus (P) runoff, exposure of humans and animals to pathogens, heavy metal contamination in surface runoff, nitrate (NO3) leaching to groundwater, odors, and nutrient imbalances for crop production. Although manure amendments cannot solve all of these problems, various amendments can be used effectively to control NH3 emissions, reduce P and heavy metal runoff, decrease pathogen levels in manure and help alleviate nutrient imbalances in manure. Manure amendments can also greatly improve solid separation in liquid manures. The only problem mentioned above where amendments have had little effect is on control of odor (Miner, 1997).