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dc.contributor.authorJones, Bruce Grayen_US
dc.date.accessioned2014-03-14T21:26:35Z
dc.date.available2014-03-14T21:26:35Z
dc.date.issued1998-12-08en_US
dc.identifier.otheretd-010599-155417en_US
dc.identifier.urihttp://hdl.handle.net/10919/40537
dc.description.abstractConservation tillage tobacco production has gained little producer acceptance since introduction in the late 1960's. Yield reductions, tobacco quality issues, unacceptable weed control, and inadequate planting equipment limited practice adoption and substantiated the need for continued research. The recent developments of a Subsurface Tiller-TransplanterTM and the herbicide SpartanTM renewed producer interest in conservation tillage and led to an investigation with both flue-cured and Virginia dark-fired tobacco. Flue-cured tobacco was transplanted into rye mulch on bedded rows and subsequently cultivated at various timings. Conservation tillage significantly reduced soil erosion approximately 92 percent and tobacco yield approximately 23 percent when row cultivation was not applied. Row cultivation significantly increased tobacco yield without increasing soil erosion. The yield of conservation tillage tobacco receiving a minimum of two cultivations was similar to conventional tobacco. The second study evaluated wheat, rye, crimson clover, and mixtures of crimson clover with either wheat or rye as cover crop mulches for conservation tillage production of Virginia dark-fired tobacco. Conservation tillage, regardless of cover crop, reduced dark-fired tobacco yields approximately 779 and 488 pounds per acre in 1996 and 1997, respectively. The removal of cover crop residue for hay did not lower tobacco yield compared to leaving residue on the soil surface. Row cultivation increased conservation tillage tobacco yield approximately 247 pounds in 1997 regardless of cover crop. The nitrogen contribution of crimson clover was minimal in both years of the study and did not affect tobacco performance.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartapplist.pdfen_US
dc.relation.haspartabstract.pdfen_US
dc.relation.haspartchap3.pdfen_US
dc.relation.hasparttitle.pdfen_US
dc.relation.haspartchap1.pdfen_US
dc.relation.haspartchap5.pdfen_US
dc.relation.hasparttoc.pdfen_US
dc.relation.haspartappdixc.pdfen_US
dc.relation.haspartchap2.pdfen_US
dc.relation.haspartacknow.pdfen_US
dc.relation.haspartappdixa.pdfen_US
dc.relation.haspartfiglist.pdfen_US
dc.relation.hasparttbllist.pdfen_US
dc.relation.haspartappdixb.pdfen_US
dc.relation.haspartchap4.pdfen_US
dc.relation.haspartappdixd.pdfen_US
dc.relation.haspartvita.pdfen_US
dc.relation.haspartchap6.pdfen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectParticle size analysisen_US
dc.subjectTobaccoen_US
dc.subjectRow cultivationen_US
dc.subjectCover cropsen_US
dc.titleImpact of Conservation Tillage on Soil Erosion and the Agronomic Performance of Flue-Cured Tobaccoen_US
dc.typeThesisen_US
dc.contributor.departmentCrop and Soil Environmental Sciencesen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineCrop and Soil Environmental Sciencesen_US
dc.contributor.committeechairReed, Thomas Daviden_US
dc.contributor.committeememberBaker, James C.en_US
dc.contributor.committeememberMorse, Ronald D.en_US
dc.contributor.committeememberJones, James L.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-010599-155417/en_US
dc.date.sdate1999-01-05en_US
dc.date.rdate2000-01-05
dc.date.adate1999-01-05en_US


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