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dc.contributorVirginia Water Resources Research Centeren
dc.contributor.authorMostaghimi, Saieden
dc.contributor.authorDeizman, Marcia M.en
dc.contributor.authorDillaha, Theo A. IIIen
dc.contributor.authorHeatwole, Conrad D.en
dc.contributor.authorPerumpral, John V.en
dc.date.accessioned2014-03-15T17:14:43Zen
dc.date.available2014-03-15T17:14:43Zen
dc.date.issued1988en
dc.identifier.urihttp://hdl.handle.net/10919/46603en
dc.description.abstractA rainfall simulator was used to study the effects of tillage system and sludge application method and rate on runoff, sediment, phosphorus (P), and nitrogen (N) losses from agricultural lands. Surface application and incorporation of sludge were studied. Anaerobically digested sewage sludge was applied at rates supplying 0, 75, and 150 kg/ha of plant-available N. These rates resulted in applications of 0, 115, and 230 kgP /ha, respectively. A total of 90 mm of rainfall, with an intensity of 40-45 mm/hr, was applied to sixteen 0.01 ha plots, on a silt loam soil. Runoff water samples were collected from plot discharge and later analyzed for sediment and nutrient contents. No-till was found to be effective in reducing runoff and sediment losses. Runoff and sediment losses decreased as sludge application rates increased, regardless of the tillage system. The surface application of sludge was more effective in reducing sediment losses than sludge incorporation. Nutrient concentrations and yields were greater from conventional tillage plots than from no-till plots. Surface application of sludge to conventional tillage plots resulted in higher concentrations and yields of most forms of P and N, relative to incorporated sludge treatments. Sediment-bound and total-P yields were less from sludgetreated plots than from the control treatments due to decreased erosion and runoff as a result of sludge application. With respect to sediment and nutrient yields in surface runoff, no-till appears to be a safer alternative for disposal of sewage sludge than conventional tillage. The structural characteristics of the soil under the two tillage systems are also discussed.en
dc.format.extentxi, 81 pagesen
dc.format.mimetypeapplication/pdfen
dc.language.isoen_USen
dc.publisherVirginia Water Resources Research Center, Virginia Polytechnic Institute and State Universityen
dc.relation.ispartofseriesBulletin (Virginia Water Resources Research Center) ; 162en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccTD201 .V57en
dc.subject.lcshSewage sludge as fertilizeren
dc.subject.lcshSoil conservationen
dc.subject.lcshTillageen
dc.subject.lcshNo-tillageen
dc.subject.lcshRunoffen
dc.subject.lcshSoils -- Compositionen
dc.titleTillage effects on runoff water quality from sludge-amended soilsen
dc.typeReporten
dc.contributor.departmentVirginia Water Resources Research Centeren
dc.identifier.oclc18616496en
dc.type.dcmitypeTexten


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