Describes P loss from Spodosols, explains the relationship between SPSC and water quality, and examines various P-impacted soils in the Lake Okeechobee Basin, with emphasis on what happens to P after a dairy is abandoned, what soil factors should be considered for sustainable dairy farming, and the role of the SPSC as a tool to indicate the amount of P that can be added before the soil becomes an environmental risk.
Describes how different P sources affect P storage and release from impacted soils, which in turn affects water quality of nearby water bodies. Discusses the relationship between manure components and P release, including P source characteristics such as P solubility that must be accounted for when evaluating P loss risk during land application of organic amendments. Details examples of P losses from different P sources and the relationships between the amounts of P leached and WSP and TP concentrations.
Discusses how to reduce P loss from soils though addition of amendments, with a focus on water treatment residues (WTRs) and biochar amendments.
Examines differences in P loss risk from natural and anthropogenic sources of P (e.g., dairies or inorganically-fertilized soils), paying particular attention to some of the other components of the P source.
Discusses phosphorus storage and release from P-impacted wetland soils and describes conventional risk assessment techniques and the use of SPSC for wetland soils.