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dc.contributor.authorFinger, Sarah Adineen_US
dc.date.accessioned2014-03-14T20:38:38Z
dc.date.available2014-03-14T20:38:38Z
dc.date.issued2000-05-02en_US
dc.identifier.otheretd-05262000-10430032en_US
dc.identifier.urihttp://hdl.handle.net/10919/33251
dc.description.abstractIn field experiments conducted in northern Virginia during 1998, oils reduced photosynthesis, fruit maturity, and crop yield. Three applications of a 1.5% (v/v) oil/water emulsion were made to Chardonnay and Cabernet Sauvignon vine canopies at 6200 L/ha (Chardonnay) and 2440 L/ha (Cabernet Sauvignon). Net assimilation rate (NAR), soluble solids concentration (SSC), and berry size were reduced by oil treatments when compared to an untreated control. Also in 1998, a 1.5% (v/v) oil/water emulsion at 5550 L/ha and 4680 L/ha was applied to 23 wine grape cultivars. Eleven cultivars had significant foliar injury but injury was not related to reductions in fruit maturity. Experiments conducted in 1999 determined if reduced spray volumes or applications to only the fruit zone minimize reductions in NAR and SSC. Chardonnay and Cabernet Sauvignon were treated with JMS Stylet oil (1.5%) using 5600 L/ha or 1870 L/ha applied to the whole canopy or 930 L/ha applied to the fruit zone. The NAR of 5600 L/ha treated Cabernet Sauvignon was significantly lower than the NAR of control and other oil treatments on three measurement dates. The NAR of Chardonnay in the 5600 L/ha treatment was significantly lower than the NAR of control treatments in three measurements. Cabernet Sauvignon SSC was reduced by the 5600 L/ha and 1870 L/ha treatments, relative to the water treated control, on three sample dates but not at harvest. The SSC of Chardonnay in the 5600 L/ha treatment was reduced at harvest as compared to all other treatments. The SSC of Chardonnay in the 1870 and 930 L/ha treatments was reduced relative to the water control. Low volumes of oil caused less reduction in NAR and SSC; however, there are concerns about the efficacy of oils used at low volumes due to poor coverage.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartFingerETD.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.subjectnet assimilation rateen_US
dc.subjectsoluble solidsen_US
dc.subjectVitis viniferaen_US
dc.titleEffects of Horticultural Oils on Photosynthesis, Fruit Maturity, and Yield of Wine Grapesen_US
dc.typeThesisen_US
dc.contributor.departmentHorticultureen_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.disciplineHorticultureen_US
dc.contributor.committeechairWolf, Tony K.en_US
dc.contributor.committeememberBarden, John A.en_US
dc.contributor.committeememberBaudoin, Antonius B. A. M.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05262000-10430032/en_US
dc.date.sdate2000-05-26en_US
dc.date.rdate2001-05-26
dc.date.adate2000-05-26en_US


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