TY - JOUR
T1 - Effect of coal combustion by-products on phosphorus runoff from a coastal plain soil
AU - Johnson, Keisha N.
AU - Allen, Arthur L.
AU - Kleinman, Peter J.A.
AU - Hashem, Fawzy M.
AU - Sharpley, Andrew N.
AU - Stout, William L.
PY - 2011/1
Y1 - 2011/1
N2 - Coal combustion by-products can lower soil phosphorus (P) solubility, but few studies have assessed their effect on runoff P. A soil with elevated P content was amended with fluidized bed combustion ash, flue gas desulfurization gypsum, and anthracite refuse ash at rates of 0-40 g kg-1 soil, and runoff from small plots was monitored over 3 years. In the first year, by-products lowered dissolved P in runoff by up to 47% below the untreated control; however, effects did not persist into the remaining years of the study. Total P losses were not significantly affected by coal combustion by-products, likely because of elevated particulate P losses. Water-extractable P was up to 40% less in treated soils than in untreated soils across the 3 years. Results demonstrate that although coal combustion by-products readily lower P solubility in soils, their impact on P losses in runoff can be undermined by erosional processes.
AB - Coal combustion by-products can lower soil phosphorus (P) solubility, but few studies have assessed their effect on runoff P. A soil with elevated P content was amended with fluidized bed combustion ash, flue gas desulfurization gypsum, and anthracite refuse ash at rates of 0-40 g kg-1 soil, and runoff from small plots was monitored over 3 years. In the first year, by-products lowered dissolved P in runoff by up to 47% below the untreated control; however, effects did not persist into the remaining years of the study. Total P losses were not significantly affected by coal combustion by-products, likely because of elevated particulate P losses. Water-extractable P was up to 40% less in treated soils than in untreated soils across the 3 years. Results demonstrate that although coal combustion by-products readily lower P solubility in soils, their impact on P losses in runoff can be undermined by erosional processes.
UR - http://www.scopus.com/inward/record.url?scp=79953148734&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79953148734&partnerID=8YFLogxK
U2 - 10.1080/00103624.2011.552660
DO - 10.1080/00103624.2011.552660
M3 - Article
AN - SCOPUS:79953148734
SN - 0010-3624
VL - 42
SP - 778
EP - 789
JO - Communications in Soil Science and Plant Analysis
JF - Communications in Soil Science and Plant Analysis
IS - 7
ER -