Type of Document	Master's Thesis
Author	Scott, James D.
URN	etd-07242012-040102
Title	Availability and distribution of nitrogen and phosphorus from sewage sludge in the plant-soil-water continuum
Degree	Master of Science
Department	Environmental Sciences and Engineering
Advisory Committee	Advisor Name Title Reneau, Raymond B. Jr. Committee Chair Boardman, Gregory D. Committee Member Kroontje, W. Committee Member Martens, David C. Committee Member
Keywords	Soils
Date of Defense	1987-05-05
Availability	restricted
Abstract Research was conducted in 1984 and 1985 to determine N and P availabilities for barley ( Hordeum vulgare L.) and com ( Zea mays L.) grown on four sludge-amended soils. Tests were conducted on the Acredale silt loam (Typic Ochraquall), Bojac loamy sand (Typic Hapludult), Davidson clay loam (Rhodic Paleudult), and Groseclose silt loam (Typic Hapludult) soils. An aerobically·digested sewage sludge from a sewage treatment plant with major industrial irrputs was applied at rates of 0, 42, and 84 dry Mg ha' 1 on the poorly-drained Acredale soil. Rates of 0, 42, 84, 126, 168, and 210 dry Mg ha'1 were applied on the well-drained Bojac, Davidson, and Groseclose soils. The 210 dry Mg ha’ 1 sludge rate supplied 3300 and 6600 kg of N and P ha’1, respectively. A 14-day anaerobic N incubation study indicated that mirreralization varied from approximately nine to four percent of sludge N from the 42 to 210 Mg ha‘ 1 application rates, respectively. Sludge application increased N uptake (rz = 0.98** to 0.99**) by the 1984 com grown on the three well-drained soils. Nitrogen balance data indicated that quantities of unrecovered N ranged from six to 21 percent where sludge was applied.
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