Terroir 1996 banner
IVES 9 IVES Conference Series 9 The developement of vineyard zonation and demarcation in South Africa

The developement of vineyard zonation and demarcation in South Africa

Abstract

[English version below]

L’histoire de viticulture de l’Afrique du Sud embrasse 340 ans, et a commencé, à la province du Cap, où les colonisateurs hollandais ont planté les premières vignes. L’arrivée des Huguenots français en 1688 a avancé, le développement. Les vins de Constantia deviennent renommés, et ainsi ils sont les premiers “vins d’origine” de l’Afrique du Sud. Pendant l’occupation britannique de la province du Cap en 1806, la viticulture a développé, davantage, dû à l’inaccessibilité, de l’Europe et ses vins pendant cette période. On a plant, la plupart des vignobles à la région côtière du sud-ouest, aux environs de la province du Cap, et aux vallées limitrophes. Ces régions sont toujours productrices principales de vin. Vers 1850, les exportations de vin étaient très limitées, dû à la détérioration de la qualité de vin. Ce fait a résulté du manque de contrôle d’origine et de qualité. L’industrie a reconnu ce problème, ce qui mène à la fondation d’un système de contrôle de Vin d’Origine en 1973. Des experts techniques font la démarcation des secteurs de vin, en employant quatre catégories. Ces sont: (1) Régions, (2) Districts, (3) Circonscriptions (‘Wards’), et (4) Domaines. Faute d’assez de traditions, d’expérience et des données expérimentales (contrasté avec les pays européens de viticulture), la philosophie sud-africaine de démarcation embrasse l’identification des unités de terrain naturel, en employant des données techniques qui sont disponibles.

The 340 year old history of viticulture in South Africa started with the first planting of vines by the Commander of the first Dutch settlers at the Cape. Further expansion was encouraged by succeeding Governors and also stimulated by the arrival of the French Huguenots in 1688. Constantia wines became internationally famous and thus were the first ‘wines of origin’ from South Africa. After the British occupation of the Cape in 1806, viticulture was further stimulated due to the inaccessibility of Europe and its wines to Britain at that stage. Vineyards were mainly established in the south-western coastal zone around the Cape and in adjacent Inland River valleys were irrigation water was available. These areas, characterized by a Mediterranean climate, are still the main wine producing regions today. Towards 1850, wine exports reached an ail time low because of the deterioration in wine quality, mainly as result of the absence of control over origin and quality. This problem was realized by the industry and resulted in a Wine of Origin Control system since 1973. Demarcation of existing vineyards was, and still is, done by technical experts, using four categories, viz. (1) Regions, based on broad geographical features and administrative boundaries; (2) Districts, based on geographical and macro climatic features; (3) Wards, essentially based on uniform soil, climatic and ecological patterns; and (4) Estates, based on the concept of singular ownership of vineyards and wine being produced on the estate. To demarcate Wards, land type maps are used. Land types are a concept unique to South Africa and are defined as a class of land over which the macro climate, the terrain form and soil pattern each displays a marked uniformity. Land types differ from each other in terms of macro climate, terrain form or soil pattern, or combinations of these natural factors. Lacking sufficient tradition, experience and experimental information, compared to the old word wine countries, the philosophy behind demarcation in South Africa is to identify natural terrain units, using available technical information, and then allowing such units to develop and demonstrate particular wine styles and character, rather than demanding proof of uniqueness before demarcation is done.

DOI:

Publication date: March 2, 2022

Issue: Terroir 1998

Type: Article

Authors

D. SAAYMAN

Dept. Of Soil Science, University of Stellenbosch, P/Bag X1, Matieland, 7602, RSA

Tags

IVES Conference Series | Terroir 1998

Citation

Related articles…

Managing extraction of colour, tannin and methoxypyrazines in Pinot noir grapes treated by leaf removal

Managing extraction of tannins and green aroma compounds attributed from methoxypyrazines in winemaking is crucial for producing high quality Pinot noir wine. This study1 investigated the impact of leaf removal on concentrations of anthocyanins, tannins, and methoxypyrazines in Pinot noir grapes and resultant wines.

Management of water status in vineyards: meta-analysis of its effects on yield and grape composition

Mediterranean vineyards have been traditionally grown under rainfed conditions, but in recent decades the irrigated area has increased significantly, seeking to minimize the adverse effects of severe water stress on grape quality and yield. Given the large area occupied by vineyards, and the increasing scarcity of water resources, it is necessary to develop strategies for the optimization and efficient use of water to reduce the risk of its overexploitation. The present study aims at valorizing previous knowledge generated in different research projects by means of a meta-analysis of the effects of water status management on vineyard performance.

A meta-analysis of the ecological impact of viticultural practices on soil biodiversity

Viticulture is facing two major challenges – climate change and agroecological transition. The soil plays a pivotal role in these transition processes. Therefore, soil quality and adequate soil management are key levers for an ecologically and economically sustainable viticulture. Over the last 15 years, numerous studies evidenced strong effects of viticultural practices on the soil physical, chemical and biological quality. However, to date a global analysis providing a comprehensive overview of the ecological impacts of viticultural practices on soil biological quality is missing.

Impact of glutathione and elemental sulphur juice addition on the volatile thiol production in South African Sauvignon blanc wine

Three compounds, 3-mercaptohexanol (3MH), 3-mercaptohexyl-acetate (3MHA) and 4-mercapto-4-methylpentan-2-one (4MMP), also known as varietal thiols, have been identified to contribute positively to wine aroma and are responsible for the distinct gooseberry, grapefruit, guava and box tree character found in Sauvignon blanc wines. Certain volatile thiol compounds though, can cause off-aromas of onion, garlic, rubber and rotten egg, this group of molecules is known as reductive sulphur compounds (RSC). This study looks into how the addition of sulphur-compounds to Sauvignon blanc juice contributes to the varietal thiol (3MH and 3MHA) concentration and reductive sulphur compound concentration in South African Sauvignon blanc wine.

Study of the sensory dimension of the wine typicality related to a terroir and crossing with their viticultural and oenological characteristics

The typicality of a product can be characterized by properties of similarity in relation to a type, but also by the properties of distinction.