Terroir 2006 banner
IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2006 9 Integrated approach in terroir studies (Terroir 2006) 9 The use of local knowledge relating to vineyard performance to identify viticultural terroirs in Stellenbosch and surrounds

The use of local knowledge relating to vineyard performance to identify viticultural terroirs in Stellenbosch and surrounds

Abstract

A terroir represents grouping of homogenous environmental units, or natural terroir units, based on the typicality of the products obtained. Identification and characterisation of terroirs depends on knowledge of environmental parameters, the functioning of the grapevine and characteristics of the final product, which must be placed in a spatial context. Field studies, resulting in point data, are considered to be necessary to investigate the functioning of the grapevine, but the use of representative sites to determine the response of the grapevine to its environment is time consuming and costly and limits terroir studies to research related investigations. We surveyed vineyard managers on their perceptions of the functioning of established Sauvignon blanc vineyards in the Stellenbosch Wine of Origin District. Comparison of data generated with these questionnaires to measured data in commercial vineyards suggested that the vineyard managers were able to characterise the performance of vineyards with respect to vigour, signs of drought stress and yield. Each vineyard was mapped and the responses were linked to modelled environmental variables. This data was used to construct decision trees, which could be applied to environmental data in a geographic information system to determine viticultural terroirs for production of Sauvignon blanc.

DOI:

Publication date: January 12, 2022

Issue: Terroir 2006

Type: Article

Authors

Victoria A. CAREY (1), Eben ARCHER (1), Gérard BARBEAU (3) and Dawid SAAYMAN (3)

(1) Department of Viticulture and Oenology, Stellenbosch University, Private Bag X1, 7602 Matieland, South Africa
(2) Unité Vigne et Vin, Centre INRA d’Angers, 42 rue G. Morel, BP 57, 49071 Beaucouzé, France
(3) Distell, P.O. Box 184, 7599 Stellenbosch, South Africa

Contact the author

Keywords

GIS, survey, Sauvignon blanc, vineyard managers, terroir

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

Impact of non-Saccharomyces in malolactic fermentation of white and red winemaking

Nowadays the use of non-Saccharomyces as starters of alcoholic fermentation (AF) has increased because of the modulation of the organoleptic profile of wines

Survey of winegrape irrigation practices in the Sacramento-San Joaquin Valley of California

In California vineyards, irrigation is considered as one of the most important decisions growers will make. Recent research has revealed that decisions of when to begin irrigation and how much water to apply have considerable consequences for final grape quality and hence wine quality. However, it is unclear whether and to what extent the average winegrape grower uses objective data to begin irrigating or to determine the amount of water to apply.

Distribution of photosynthates towards the grapes: effects of leaf removal and cluster thinning applied before veraison in cv. Verdejo

The relationship between grape production and leaf surface is a highly debated aspect in terms of the impact it may have on the composition and quality of grapes, especially in areas that focus their cultivation on high-quality wine. In many occasions, the limitation of the unitary production level in these areas is claimed to be the main factor for achieving high quality levels in the wine, forgetting the importance of the source-sink relationship and other environmental factors and management of the canopy. Taking this consideration into account, this work seeks to know the response of the vine as a whole, and the individual shoot as well, to the application of various alternatives of leaves and clusters removal, carried out in the phase immediately before veraison, in cv. Verdejo, in Spain.

Antifungal and Laccase-Suppressing Activity of Phenolic Compounds and Their Oxidation Products on Grey Mold-Fungus Botrytis cinerea

Botrytis cinerea causes grey mold that results in severe problems for wine makers worldwide. Infected grapes lead to quality deterioration including formation of off-flavors or browning. The latter is caused by the enzyme laccase which is capable of oxidizing a wide range of phenolic compounds. Since the use of conventional pesticides is associated with many concerns of consumers and authorities regarding environmental and health related issues and may result in fungicide resistance, the development of green alternatives is gaining more attention.

Il piano regolatore delle citta’ del vino

Obiettivo generale di questo documenta è fornire un metodo di pianificazione che superi l’organizzazione delle aree rurali, ed in particolare vitate, finalizzata unicamente all’ot­timizzazione economico produttiva delle aziende, verso una pianificazione integrata degli spazi aperti.