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…

When organic chemistry contributes to the understanding of metabolism mechanisms

Many compounds of interest in wine are difficult to analyze since they are present in very small quantities or they are unstable. The need for reliable data led scientists to develop complex method in order to overcome the analytical difficulties and provide accurate quantitative data for grape or wine characterization.

Evaluation of Valdadige DOC “Terra dei Forti” vineyards by zoning approach

La conoscenza dell’interazione genotipo x ambiente e pertanto della caratterizzazione territoriale è di prioritaria importanza nella valutazione dei siti. Grazie alla combinazione di dati GIS

“Gheo” per la vitivinicoltura: un progetto per la produzione dl vini dl alta qualità

Il settore primario, ed in particolare quello agricolo, sta attraversando un periodo partico­larmente delicato. Sia gli aspetti della produzione che quelli della commercializzazione ven­gono infatti messi in discussione da nuovi indirizzi economici e tecnologici.

PROFILING OF LIPIDS IN WINES FROM MONOCULTURE FERMENTATION WITH INDIGENOUS METSCHNIKOWIA YEAST SPECIES

Lipids are a diverse group of organic compounds essential for living systems. They are vital compounds for yeast which makes them an important modulator of yeast metabolism in alcoholic fermentation. This study presents a comprehensive lipidome analysis of wine samples from the Vitis vinifera L., Maraština. The fermentation trails were set up in monoculture with different indigenous yeast strains selected from a collection of native yeasts established at the Institute for Adriatic Crops and Karst Reclamation in 2021, previously isolated from Croatian Maraština grapes: Metschnikowia pulcherrima, Metshnikowia sinensis/shanxiensis , and Metschnikowia chyrsoperlae.

Investigating the Ancient Egyptian wines: The wine jars database

In Ancient Egypt, wine was a luxury product consumed mainly by the upper classes and the royal family and offered to gods in daily religious rituals in the temples.
Since the Predynastic (4000-3100 BC) period, wine jars were placed in tombs as funerary offerings. From the Old Kingdom (2680-2160 BC) to the Greco-Roman (332 BC-395 AD) period, viticulture and winemaking scenes were depicted on the private tombs’ walls. During the New Kingdom (1539-1075 BC), wine jars were inscribed to indicate: vintage year, product, quality, provenance, property and winemaker’s name and title.