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Managing Phosphorus Enrichment in Watersheds with high levels of Livestock and Poultry Production

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  21st Century Watershed Technology: Improving Water Quality and the Environment Conference Proceedings, May 27-June 1, 2012, Bari, Italy  12-13640.(doi:10.13031/2013.41446)
Authors:   L Mark Risse
Keywords:   Water Quality, Poultry Litter, Nutrient Management, Non-point source pollution

While the nutrients in manure are a great source of soil fertility that benefits crop production, in watersheds with dense concentrations of livestock and poultry production, nutrient enrichment in reservoirs and estuaries that must be addressed. This paper will summarize some of the strategies used to address phosphorus enrichment from animal production and identify research needs and information gaps that hinder successful solutions. Various projects and studies conducted in the Lake Allatoona and Lake Lanier Basins that serve as the source of all of Atlantas drinking water will be used to summarize the extent of the issue. Some of these include nutrient management implementation efforts, modeling and establishing TMDLs in the basins, attempts at developing and implementing nutrient trading programs and opportunities to add value and export manure nutrients from the watershed. Many of the findings will come from previously published research as will as extension and engagement programs that investigated farmer led solutions.

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