|Sauer, Thomas - Tom|
Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: 10/22/1998
Publication Date: N/A
Technical Abstract: The long-term viability of confined animal production feeding operations (CAFOs) is contingent upon efficient removal and effective treatment of the waste generated. Repeated application of animal wastes may lead to elevated nutrient concentrations in receiving soils that far exceed crop requirements. Buildup of phosphorus in Ozark Highland soils has led to concern over accelerated eutrophication of regional water bodies. The objective of this research project was to create a phosphorus balance sheet to estimate the land base necessary for CAFOs to limit phosphorus accumulation under the permanent pasture, beef grazing system typical of the region. Analyses of waste generation from poultry and swine operations and current land application strategies will be discussed. Estimates of the potential impact of phosphorus-reducing dietary strategies including phytase enzyme addition and low phytic acid feed-stuffs will be presented.