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


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.


Publication date: January 12, 2022

Issue: Terroir 2006

Type: Article



(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


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


IVES Conference Series | Terroir 2006


Related articles…

The environmental footprint of selected vineyard management practices: A case study from Logroño (La Rioja) Spain

Viticulture is globally important for socioeconomic and environmental reasons. The EU is globally leading grape and wine production, and Spain is among the top grape and wine producers. As climate change affects viticulture, mitigation and adaptation are crucial for protecting grape production. In this research work, data on viticultural management practices such as soil cultivation, irrigation, energy, machinery, plant protection and the use of fertilizers from vineyards located in Logroño (La Rioja) have been obtained.

Caractérisation des productions vitivinicoles des terroirs du Barolo (Piemonte, Italie)

La Région Piemonte a commencé en 1994 un projet de caractérisation des productions vitivinicoles des terroirs du Barolo (Piemonte, Italie) par une équipe pluridisciplinaire avec la participation de 6 Instituts de recherche qui travaillent dans la Région et la collaboration de 2 Associations des producteurs viticoles et des organismes de valorisation du vin Barolo.


The aging potential of Burgundy chardonnay wines is considered as quality indicator. However, some of them exhibit higher oxidative sensitivity and premature oxidative aging symptoms, which are potentially induced by no-enzymatic oxidation such as Fenton-type reaction (Danilewicz, 2003). This chemical mechanism involves the action of transition metal, native phenolic compounds and oxygen which promote the generation of highly reactive oxygen species (ROS) such as hydroxyl radicals (OH) or 1-hydroxyethyl radicals (1-HER) from oxidation of ethanol. Such mechanism is involved in the radical oxidation occurring during bottle aging. According to Elias et al.,(2009a), the 1-HER is the most abundant radical in forced oxidation treated wines. Consequently, understanding its evolution kinetic in dry white wines is of great importance.

La vinificación de las uvas aromáticas: Moscateles y Malvasías

Las uvas aromáticas se pueden dividir en dos clases, Moscateles y Malvasías, dependiendo del hecho de que el linalol o el geraniol, respectivamente, sean los alcoholes terpénicos monohidroxilados que

New insight the pinking phenomena of white wine

Pinking of white wine is an undesired change potentially occurring over storage, leading to the turning of color from yellow into salmon-red hue.