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dc.contributor.authorMutter, Rodney N.en
dc.date.accessioned2014-03-14T21:40:41Zen
dc.date.available2014-03-14T21:40:41Zen
dc.date.issued1994en
dc.identifier.otheretd-07212009-040409en
dc.identifier.urihttp://hdl.handle.net/10919/43791en
dc.description.abstractPrevious research has shown that crop land application of alum sludge can be a valuable method of residuals disposal and has been demonstrated to cause no adverse effects on soil properties and crop yields. Studies have shown that with good soil management practices essential plant macronutrient levels can be maintained to support good crop growth. This study investigated the application of water treatment residuals in both field studies and greenhouse pot studies in order to determine the effects on soils properties and crop yields. Alum sludge collected from the Blacksburg-Christiansburg-VPI Water Authority and Radford Water Treatment Plant was land applied in the Spring of 1992. Two separate crop rotations, corn followed by wheat, were grown and harvested during the two-year field study. A greenhouse pot study using lettuce and radish plants was initiated in the Spring of 1993. Soil and plant tissue samples were collected and analyzed for the field and greenhouse studies. Harvest yields were also carefully monitored and recorded. The results of the laboratory analysis provided information on nutrient concentrations in soil and uptake by plants, and also soil and plant tissue elemental accumulations. Alum and PACI sludge at loading rates of up to 2.5% had no negative impacts on wheat yield. The growth study using lettuce and radish plants concluded that residual additions at low levels improved crop yield and that residual aging prior to land application was essential for good yield.en
dc.format.extentxiii, 110 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.isformatofOCLC# 30502836en
dc.relation.haspartLD5655.V855_1994.M888.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.M888en
dc.subject.lcshAlumen
dc.subject.lcshCrop yieldsen
dc.subject.lcshSewage sludge as fertilizeren
dc.subject.lcshSoils -- Phosphorus contenten
dc.titleAn assessment of cropland application of alum sludgeen
dc.typeThesisen
dc.contributor.departmentEnvironmental Engineeringen
dc.description.degreeMaster of Scienceen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelmastersen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.disciplineEnvironmental Planningen
dc.type.dcmitypeTexten
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07212009-040409/en
dc.date.sdate2009-07-21en
dc.date.rdate2009-07-21en
dc.date.adate2009-07-21en


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