Terroir 2006 banner
IVES 9 IVES Conference Series 9 Incidences of the climate, the soil and the harvest date on Colombard aromatic potential in Gascony

Incidences of the climate, the soil and the harvest date on Colombard aromatic potential in Gascony

Abstract

This experiment tries to characterize the role of soil, climate and harvest date on the composition of grape-derivated thiols, 3-mercapto-hexanol (3MH) and 3-mercapto-hexile acetate (A3MH), in the white wines from Colombard varieties in Gascony (South-West of France). A network of 6 plots has been observed since 1999 on different pedologic units. The plots have common agronomical characteristics, plantation spacing (2,900 to 3,500 vines per ha), plantation aging (1985-1990), strength conferred by rootstock (SO4, RSB), soil management (grass covered 1 by 2) and training system (vertical shoot positionning pruned in single Guyot). Meteorological stations are located near the plots. Climatology is characterized by sums of temperatures and rainfalls during the vegetative growth. Vine water status is determined by stem water potential. The results show that it is possible to define 2 major kinds of soil, confirmed by measurement of primary shoot growth rate and his date of cessation growth. Grapes are harvested in 3 times between 40 and 55 days after veraison and vinified on a standart protocol. Grape-derivated thiol rate (3MH, A3MH) quantified in wines is dependant on the vintage conditions. Temperature variables seem to contribute to the presence of sulphur compounds in wines as well as the length of non-cutted primary shoot. An early harvest date does not benefit to increase grape-derivated thiols quantity in Colombard wines. Late harvest wines show better mouth balance and better aroma characteristic when tasted by expert group.

DOI:

Publication date: January 12, 2022

Issue: Terroir 2006

Type: Article

Authors

T. DUFOURCQ (1), R. SCHNEIDER (2), R. RENARD (1) and E. SERRANO (1)

(1) ITV France, Midi-Pyrénées, V’INNOPOLE, 81310 Lisle/Tarn, France
(2) ITV France, INRA-UMR Sciences pour l’œnologie, 2 place Viala, 34060 Montpellier, France

Contact the author

Keywords

climate, soil, vine water status, Colombard, grape-derivated thiol

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

Effect of cytokinin and auxin application on double cropping performance in Vitis vinifera: preliminary findings

Double cropping is a novel technique, driven by the extension of the growing season caused by global warming.

Agronomical assessment of a vine « terroir » map: first results in the « AOC » Minervois region

Minervois is a vine region where the first detailed soil map was begun 30 years ago. In 2003, a new map was drawn plotting the soil-landscape associations. This map distinguishes 8 large soil units based on geology. The widest (called « marnes ») is the most complex : it is made of 57 sub-units, which leads to a high variability of the vine behaviour on this unit.

Amyndeon‐naoussa: the two faces of Xinomavro

Xinomavro is the most important indigenous red wine variety grown in Northern Greece. It participates in the production of several PGI wines in Macedonia while from 100% Xinomavro the PDO “Amyndeon” and “Naoussa” are produced. The viticultural area of Amyndeon lies in a plateau of 550 ‐700 m of altitude, in a semi‐continental climate with mostly deep sandy loamy soils derived from limestone and marl bedrocks while in Naoussa, Xinomavro is grown in a Mediterranean climate on more heavy textured soils, sandy clay loam to clay, derived from ophiolithic, limestone and marl bedrocks, in an altitude which varies from 150 to 400 m. Different soil, climate and viticultural technique interactions, result in great variability with respect to morphological, ampelographical and physiological characters of Xinomavro as well as in the characteristics of the wines produced. 

New acacia gums fractions: how their features affect the foamability of sparkling base wines?

When sparkling wine is served, the first attribute perceived is foam1. Bentonite is usually added to wine in order to cause particle flocculation

La producción vitivinícola como fuente de impactos positivos en el medio seminatural

Wine is at risk of being labelled as a dangerous health product, based on studies that focus on its alcohol content. However, multiple studies suggest that moderate consumption is healthy. Changing the focus from health impacts to the environmental and socioeconomic impacts that wine companies cause, what can be said?