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Cover Crop, Rootstock, and Root Restriction Regulate Vegetative Growth of Cabernet Sauvignon in a Humid Environment

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dc.contributor.authorHatch, T. A.en
dc.contributor.authorHickey, C. C.en
dc.contributor.authorWolf, T. K.en
dc.contributor.departmentVirginia Agricultural Experiment Stationen
dc.date.accessed2014-07-09en
dc.date.accessioned2014-07-10T13:56:41Zen
dc.date.available2014-07-10T13:56:41Zen
dc.date.issued2011-09en
dc.description.abstractCover crops, rootstocks, and root restriction were evaluated as means to regulate vegetative growth of Cabernet Sauvignon grapevines in a humid environment. Treatments were arranged as a strip-split-split plot with row-middle and under-trellis cover crop (UTCC) compared to row-middle only cover crop combined with 85 cm weed-free strips in the vine row as main plots. Rootstocks Riparia Gloire (Riparia), 420A, and 101-14 were subplots, while sub-subplots comprised two treatments: vines were either planted in root-restrictive (RR) fabric bags (0.015 m(3)) at vineyard establishment or were planted without root restriction. Root restriction and UTCC were independently effective in suppressing vegetative development as measured by rate and seasonal duration of shoot growth, lateral shoot development, trunk circumference, and dormant pruning weights. Riparia was the most effective rootstock in limiting vegetative development among the three evaluated; vines grafted to Riparia had similar to 25% lower cane pruning weights than did vines grafted to 420A or 101-14. Under-trellis cover crop reduced cane pruning weights by 47% relative to vines grown on herbicide strips. Canopy architecture was generally improved by both UTCC and by root restriction, but generally unaffected by rootstock. Root restriction reduced the discrimination against C-13 assimilation in both berries and leaf laminae tissue as measured by delta C-13, while under-trellis floor management did not affect this measure of chronic water stress. The principal direct effeci of the UTCC and the root-restriction treatments was a sustained reduction in stem (xylem) water potential (psi(stem)). Stomatal conductance and net assimilation rate were depressed by increasing water deficit, particularly for root-restricted vines. Results suggest practical measures can be used to create a more favorable vine balance under conditions of variable rainfall, such as exist in the eastern United States.en
dc.description.sponsorshipVirginia Wine Boarden
dc.description.sponsorshipVirginia Agricultural Councilen
dc.description.sponsorshipViticulture Consortium:Easten
dc.format.mimetypeapplication/pdfen
dc.identifier.citationHatch, T. A.; Hickey, C. C.; Wolf, T. K., "Cover Crop, Rootstock, and Root Restriction Regulate Vegetative Growth of Cabernet Sauvignon in a Humid Environment," Am. J. Enol. Vitic September 2011 vol. 62 no. 3 298-311. DOI: 10.5344/ajev.2011.11001en
dc.identifier.doihttps://doi.org/10.5344/ajev.2011.11001en
dc.identifier.issn0002-9254en
dc.identifier.urihttp://hdl.handle.net/10919/49439en
dc.identifier.urlhttp://www.ajevonline.org/content/62/3/298.fullen
dc.language.isoenen
dc.publisherAmerican Society for Enology and Viticultureen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectcanopy managementen
dc.subjectcover cropsen
dc.subjectrootstocksen
dc.subjectroot restrictionen
dc.subjectvineen
dc.subjectbalanceen
dc.subjectwater-use efficiencyen
dc.subjectdeficit irrigationen
dc.subjectfruit compositionen
dc.subjectvitis-viniferaen
dc.subjectmediterranean climateen
dc.subjectintercropping systemen
dc.subjectisotopeen
dc.subjectcompositionen
dc.subjectwine qualityen
dc.subjectgrapevinesen
dc.subjectvineyarden
dc.subjectbiotechnology & applied microbiologyen
dc.subjectfood science & technologyen
dc.subjecthorticultureen
dc.titleCover Crop, Rootstock, and Root Restriction Regulate Vegetative Growth of Cabernet Sauvignon in a Humid Environmenten
dc.title.serialAmerican Journal of Enology and Viticultureen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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