Fate and Transport of Nitrogen at a Deep Row Biosolids Application Hybrid Poplar Tree Farm

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dc.contributor.advisorFelton, Gary Ken_US
dc.contributor.authorBuswell, Carrie Ursulaen_US
dc.contributor.departmentBiological Resources Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2006-09-12T06:04:33Z
dc.date.available2006-09-12T06:04:33Z
dc.date.issued2006-08-10en_US
dc.description.abstractThis study focused on a gravel mine reclamation site using biosolids in deep rows as a nutrient source and hybrid poplar trees as the stabilizing crop. Biosolids application rates of 481, 962, and 1443 dry Mg/ha and tree densities of 0, 716, and 1074 trees/ha and controls (0 dry Mg/ha - 0 trees/ha) were studied. Total nitrogen, ammonium, nitrite and nitrate in soil water samples from pan and suction lysimeters under and around the biosolids rows were evaluated. Total nitrogen was predominantly in the form of ammonium. Ammonium concentrations in more than half the samples were above 100 mg/L, reflecting the average biosolids concentration of 2,300 mg/kg. No significant differences (a = 0.05) were determined between application rates or tree densities, but ammonium concentration significantly decreased with distance below the biosolids row. Nitrite and nitrate nitrogen concentrations were predominantly non-detects or less than 1 mg/L, indicating that nitrification was not occurring.en_US
dc.format.extent4559244 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/3918
dc.language.isoen_US
dc.subject.pqcontrolledEngineering, Environmentalen_US
dc.subject.pquncontrollednitrogenen_US
dc.subject.pquncontrolledbiosolidsen_US
dc.subject.pquncontrolledgravel mine reclamationen_US
dc.subject.pquncontrolleddeep rowen_US
dc.subject.pquncontrolledforest cropsen_US
dc.subject.pquncontrolledlysimetersen_US
dc.titleFate and Transport of Nitrogen at a Deep Row Biosolids Application Hybrid Poplar Tree Farmen_US
dc.typeThesisen_US

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