Terroir 1996 banner
IVES 9 IVES Conference Series 9 Zonage et caractérisation des terroirs de l’AOC Côtes-du-Rhône: exemple du bassin de Nyons-Valreas

Zonage et caractérisation des terroirs de l’AOC Côtes-du-Rhône: exemple du bassin de Nyons-Valreas

Abstract

The southern Côtes-du-Rhône vineyard shows a significant variety of ecological facets over the Lower Rhone Valley. Intending to characterize such a variety of “terroir “called vineyard situations, a spatial approach based on identification of soil landscapes has been initiated. It was applied to a limited zone in part of the Valréas sedimentary basin, where local climate is likely homogeneous. Spatial distribution modelling of soil cover combine existing soil and geological data, using land survey, stereoscopic aerial photograph examination, satellite image processing. Map features are digitized within a Geographic Information System (GIS). 21 synthetic map units integrate 15 variables referring to soil, geomorphology, lithology, stratigraphy, vegetation, land form. The vine-growing terroirs, regarded as parts of agricultural lands consistent with both soil landscapes and harvestlwine response, are defined by clustering of the soil landscape units according to multivariate analysis. Terroir mapping is examined and validated in relation to wine response through Grenache harvest composition and its frequency over 1982-1996. Discriminant analysis is performed on the 1982-1996 must compositions of 14 sites related to 4 terroirs units. It shows that discrimination of the terroir units may be realized with the following variables: sugar content converted to expectable alcohol percentage (TAP, %), pH, titrable acidity (AT, g H2SO4/l.), weight of 200 berries (g/l), TAP/AT ratio.

Download the PDF

DOI:

Publication date: March 2, 2022

Issue: Terroir 1998

Type: Article

Authors

EMMANUELLE VAUDOUR (1, 2), M.C. GIRARD (1), L.M. BREMOND (2), L. LURTON (3)

(1) UER Dynamique des Milieux et Organisations Spatiales
Institut National Agronomique Paris-Grignon – 78850 Thiverval-Grignon (France)
(2) Syndicat Général des Vignerons Réunis des Côtes-du-Rhône
6, rue des Trois Faucons – 84000 Avignon (France)
(3) Comité Interprofessionnel des Vins d’AOC Côtes-du-Rhône et de la Vallée du Rhône Service technique, 2260, route du Grès, 84100 Orange (France)

Keywords

soil landscapes, vine-growing terroirs, harvest composition frequency, GIS

Tags

IVES Conference Series | Terroir 1998

Citation

Related articles…

Ultra-High Pressure Homogenization (UHPH): a technique that allows the reduction of SO2 in winemaking

Ultra-High Pressure Homogenization (UHPH) is an innovative, efficient and non-thermal technology that can be applied at different stages in winemaking in order to reduce or avoid the use of sulphites. During 2022 vintage, a batch of Xarel·lo must was processed by UHPH at 300 MPa with an inlet temperature (Ti) of 4 ºC. In order to verify the influence of the UHPH treatment in wine characteristics, alcoholic fermentations with this must (UHPH) were carried out and compared with a control batch (without SO2 addition (C)) and a sulphited batch, in which 60 mg/L of total SO2 (SO2) were added.

Read More

Genetic traceability of ‘Nebbiolo’ musts and wines by single nucleotide polymorphism (SNP) genotyping assays

AIM: ‘Nebbiolo’ (Vitis vinifera L.) is one of the most ancient and prestigious Italian grape cultivars. It is renowned for its use in producing monovarietal high-quality red wines, such Barolo and Barbaresco. Wine quality and value can be heavily modified if cultivars other than those allowed are employed.

Read More

D-wines: use of LC-MS metabolomic space to discriminate italian mono-varietal red wines

Studying wine metabolome through multiple targeted methods is complicated and limitative; since grapes, yeasts, bacteria, oxygen, enological techniques and wine aging collaborate to deliver one of the richest metabolomic fingerprint.

Read More

Oenological potential of cv. Tortojona: A minority grape variety from Extremadura, southwest Spain

This work, included in the VAVEGEX project, aims to evaluate the oenological, phenolic, chromatic and sensory characteristics of the grapes, must and wines produced from cv. Tortojona, minority variety grown in Extremadura region (Southwest, Spain).

Read More

A survey on the rotundone content of 18 grape varieties sourced from a germplasm 

Rotundone, the pepper aroma compound, has been detected in wines made from a large number of grape varieties. However, given the fact that analyzed wines were sourced from different winegrowing regions and seasons, made using different winemaking techniques and at different scales, it remains difficult to assess the real variety potential to produce rotundone.

Read More