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United States Department of Agriculture

Agricultural Research Service

Title: Effect of Byproducts Amended Poultry Litter on Phosphorus Availability to the Chesapeake Bay

Author
item Codling, Eton

Submitted to: BARC Bay Day
Publication Type: Abstract Only
Publication Acceptance Date: October 15, 2005
Publication Date: October 15, 2005
Citation: Codling, E.E. 2005. Effect of byproducts amended poultry litter on phosphorus availability to the chesapeake bay. [abstract]. BARC Bay Day.

Technical Abstract: Livestock within the Chesapeake Bay watershed produce some 44 million tons of manure each year, with 50 thousand tons of high phosphorus (P) litter produced annually on Maryland’s Eastern Shore. This high P litter is applied to agriculture. As a result, a large portion of the soils in the poultry producing area of Maryland have P in excess of crop need. Under the Clean Water Quality Act of 1998, soil with excessive amount of P cannot receive additional P after 2005. Objective was to reduce the solubility of phosphorus, in manure and soils with high levels of P using Drinking Water Treatment Residue. Adding 10% by weight of alum-based drinking water treatment residuals reduces water-soluble P by up to 95% in poultry litter. P contributions to the Chesapeake Bay can be reduced from animal manure by utilizing amendments, such as water treatment residuals.

Last Modified: 10/1/2014