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Ecophysiology, vigour, berry and wine characteristics of grapevines growing on and off heuweltjies

dc.contributor.authorBekker, S. J.en_ZA
dc.contributor.authorHoffman, J. E.en_ZA
dc.contributor.authorJacobs, S. M.en_ZA
dc.contributor.authorStrever, A. E.en_ZA
dc.contributor.authorVan Zyl, J. L.en_ZA
dc.date.accessioned2016-11-25T13:13:41Z
dc.date.available2016-11-25T13:13:41Z
dc.date.issued2016
dc.identifier.citationBekker, S. J., et al.2016. Ecophysiology, vigour, berry and wine characteristics of grapevines growing on and off heuweltjies. South African Journal of Enology & Viticulture, 37(2):176-192, doi:10.21548/37-2-690en_ZA
dc.identifier.issn2224-7904 (online)
dc.identifier.issn0253-939X (print)
dc.identifier.otherdoi:10.21548/37-2-690
dc.identifier.urihttp://hdl.handle.net/10019.1/99902
dc.descriptionCITATION: Bekker, S. J., et al.2016. Ecophysiology, vigour, berry and wine characteristics of grapevines growing on and off heuweltjies. South African Journal of Enology & Viticulture, 37(2):176-192, doi:10.21548/37-2-690.en_ZA
dc.descriptionThe original publication is available at http://www.journals.ac.za/index.php/sajeven_ZA
dc.description.abstractHeuweltjies are unique landscape features putatively created by the termite Microhodotermes viator through their burrowing and nest-building activities. They have been closely examined in the natural veld of the Western Cape in the recent past and are the focus of many ecological studies, but their effect in cultivated landscapes (e.g. vineyards and orchards) has remained unexplored. This study addresses the vigour and physiology of vines growing on and off heuweltjies, as well as the wine emanating from these vines. This study was conducted on Cabernet Sauvignon and Shiraz in two climatic regions of the Western Cape, namely Stellenbosch (Mediterranean climate) and Robertson (semi-arid climate) respectively, to better understand how differences in heuweltjie characteristics correspond to differences in rainfall and temperature. Through the use of ANOVAs and Fisher’s LSD post hoc tests to indicate statistical significance, it was apparent that the soil on and off heuweltjies differed significantly in respect of several physical and chemical properties. Consequently, soil water content was more favourable on heuweltjies, especially in the Stellenbosch area, where only supplementary irrigation was applied. Heuweltjies induce substantial changes in grapevine vigour and grape composition. Differences in grapevine physiology between heuweltjie and non-heuweltjie plots were subtle, but vine vigour was severely altered on the heuweltjieassociated vines, exhibiting excessive vegetative growth in Stellenbosch and leading to variations in berry and wine characteristics on and off the heuweltjies. The opposite was observed in the semi-arid climate of Robertson. The presence of heuweltjies in vineyards presents an opportunity to produce and market wines with a difference in respect of their characteristics and unique origin.en_ZA
dc.description.urihttp://www.journals.ac.za/index.php/sajev/article/view/690
dc.format.extent17 pages : illustrationsen_ZA
dc.language.isoen_ZAen_ZA
dc.publisherSouth African Society for Enology and Viticultureen_ZA
dc.subjectSoil propertiesen_ZA
dc.subjectWine and wine making -- Environmental aspectsen_ZA
dc.subjectEcophysiology of vineyardsen_ZA
dc.subjectWine sensory analysesen_ZA
dc.subjectGrapevines -- Ecophysiology -- Western Capeen_ZA
dc.titleEcophysiology, vigour, berry and wine characteristics of grapevines growing on and off heuweltjiesen_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's versionen_ZA
dc.rights.holderSouth African Journal of Enology & Viticultureen_ZA


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