Plant and soil responses to field-applied flue gas desulfurization residue

• Published in: Fuel (Guildford) Vol. 78; no. 2; pp. 169 - 174
• Main Authors: Sloan, J.J, Dowdy, R.H, Dolan, M.S, Rehm, G.W
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 1999; Elsevier
• Subjects: Air pollution caused by fuel industries; Alfalfa; Applied sciences; Boron; Energy; Energy. Thermal use of fuels; Exact sciences and technology; FGD residue; Molybdenum; Pollution reduction; Stack gas and industrial effluent processing; Sulfur; Boron; Alfalfa; Sulfur; Molybdenum; FGD residue; Combustion gas desulfurization; Residue; Thermal power plant; Coal; Waste reuse; Agriculture; Flue gas purification
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/S0016-2361(98)00135-5

The objective of this study was to document the availability of flue gas desulfurization (FGD) residue-borne boron (B), sulfur (S), and molybdenum (Mo) for alfalfa ( Medicago sativa L.) uptake when applied at agronomic rates to marginally B deficient soils. The FGD residue was applied at rates of 0, 0.46 and 3.75 Mg ha −1 on a silt loam soil immediately prior to alfalfa seeding. Alfalfa yields were unaffected by these rates of residue applications, but shoot concentrations of B and S in the second cutting, and B, S, and Mo in the third cutting were increased by residue applications. Hence, FGD residue is a readily available B source, particularly later in the growing season when native soil B availability decreased.