The effect of partial defoliation on growth characteristics of vitis vinifera L. cv. cabemet sauvignon I. vegetative growth

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dc.contributor.authorHunter, J. J.en_ZA
dc.contributor.authorVisser, J. H.en_ZA
dc.date.accessioned2017-06-14T12:14:00Z
dc.date.available2017-06-14T12:14:00Z
dc.date.issued1990
dc.descriptionCITATION: Hunter, J. J. & Visser, J. H. 1990. The effect of partial defoliation on growth characteristics of vitis vinifera L. cv. cabemet sauvignon I. vegetative growth. South African Journal of Enology & Viticulture, 11(1):18-25, doi:10.21548/11-1-2237.en_ZA
dc.descriptionThe original publication is available at http://www.journals.ac.za/index.php/sajeven_ZA
dc.description.abstractThe effect of partial defoliation of the whole canopy on vegetative growth of Vitis vinifera L. cv. Cabernet Sauvignon was investigated. Vegetative growth of vines followed the well-known pattern for 0%, 33% and 66% defoliation, i.e. an increase until veraison followed by a decline. Partial defoliation conducted from different developmental stages had no significant effect on leaf area and main shoot length at subsequent developmental stages. The earlier defoliation was applied, the more lateral shoot length and the number of lateral shoots increased, resulting in higher total shoot lengths but no significant differences in cane mass. Partial defoliation from veraison had no effect on lateral growth. Canopy density and relative humidity decreased, while sunlight penetration and windspeed increased in the canopy with partial defoliation. The improved canopy light environment facilitates improved photosynthetic efficiency of leaves as well as development and composition of grapes.en_ZA
dc.description.urihttp://www.journals.ac.za/index.php/sajev/article/view/2237
dc.description.versionPublisher's versionen_ZA
dc.format.extent8 pages : illustrationsen_ZA
dc.identifier.citationHunter, J. J. & Visser, J. H. 1990. The effect of partial defoliation on growth characteristics of vitis vinifera L. cv. cabemet sauvignon I. vegetative growth. South African Journal of Enology & Viticulture, 11(1):18-25, doi:10.21548/11-1-2237en_ZA
dc.identifier.issn2224-7904 (online)
dc.identifier.issn0253-939X (print)
dc.identifier.otherdoi:10.21548/11-1-2237
dc.identifier.urihttp://hdl.handle.net/10019.1/101783
dc.language.isoen_ZAen_ZA
dc.publisherSouth African Society for Enology and Viticultureen_ZA
dc.rights.holderSouth African Society for Enology and Viticultureen_ZA
dc.subjectGrapevines -- Defoliationen_ZA
dc.subjectVegetative growth of vinesen_ZA
dc.subjectGrapevines -- Defoliation -- Physiological effecten_ZA
dc.subjectCabemet sauvignon I -- Vegetative growthen_ZA
dc.titleThe effect of partial defoliation on growth characteristics of vitis vinifera L. cv. cabemet sauvignon I. vegetative growthen_ZA
dc.typeArticleen_ZA
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