Terroir 1996 banner
IVES 9 IVES Conference Series 9 Territoires et zones viticoles. Aspects climatiques, pédologiques, agronomiques. Caractérisation des terroirs viticoles: une étude systémique

Territoires et zones viticoles. Aspects climatiques, pédologiques, agronomiques. Caractérisation des terroirs viticoles: une étude systémique

Abstract

On assiste actuellement à l’émergence d’une demande sociale forte à l’égard de fonctions par ailleurs traditionnelles de l’agriculture, qui concernent la gestion des ressources du milieu, le maintien d’un tissu social rural, la valorisation des territoires ruraux et l’entretien des paysages.
L’intérét suscité amène à préciser comment se pose aujourd’hui à la recherche, la question de la gestion des territoires ruraux. En effet, les impératifs de la production agricole, les phénomènes de déprise et les directives européennes et mondiales relatives à la protection de l’environnement, conduisent à analyser précisément le métier et la fonction d’agriculteur et du vigneron en l’occurrence.
Je pense que les conclusions d’un tel colloque feront non seulement émettre une réflexion, mais surtout apporteront des éléments de réponse, pour une prise en compte réelle de la gestion des territoires (ce qui nécessite bien entendu des méthodologies de délimitation ou de zonage).
La diversité des champs disciplinaires concernés, des méthodologies mises en oeuvre, des partenaires impliqués, montre bien l’ampleur et la complexité d’une réflexion à laquelle souhaitent s’associer les acteurs de développement local, les décideurs, les professionnels de l’agriculture, de la viticulture et des structures de transformation, mais aussi plus largement les consommateurs.
La qualité s’élabore tout au long d’un processus. Ceci sollicite des compétences variées en agronomie, en création variétale, en technologie … Une telle approche de la qualité des produits peut constituer un principe fédérateur puissant, dans un contexte où le pilotage de la consommation par l’aval en fait un élément déterminant de la compétitivité des filières et de leur diversification.

DOI:

Publication date: March 2, 2022

Issue: Terroir 1998

Type: Article

Authors

CHRISTIAN ASSELIN

INRA-URW-Angers
42, rue Georges Morel – 49071 Beaucouzé cedex

Tags

IVES Conference Series | Terroir 1998

Citation

Related articles…

Understanding the impact of climate change on anthocyanin concentrations in Napa Valley Cabernet Sauvignon

Climate change is having a significant impact on the wine industry through more regular drought conditions, fires, and heat events, leading to crop loss. Furthermore, these events can reduce overall quality of the fruit, even when crop yields are not impacted. Anthocyanins are considered one of the most important classes of compounds for red wine production and are known to be sensitive to vine water status and heat events.

Challenges and opportunities for increasing organic carbon in vineyard soils: perspectives of extension specialists

Increasing soil organic carbon (SOC) in vineyards enhances soil health with associated benefits for climate change resilience and mitigation.

Aromas of Riesling wine: impact of bottling and storage conditions

Storage temperature and bottling parameters are among the most important factors, which influence the development of wine after bottling. It is well studied that higher storage temperatures speed up chemical reactions and results in faster wine aging [1,2]. It is also known that higher SO2 level and lower oxygen content provide better protection and longer shelf-life for the wine. At the same time, the mechanisms of chemical transformations of wine aromas during the aging process are not fully understood. In particular, how oxidation reactions contribute to the transformations of varietal aroma compounds.In the present study [3], we investigated the development of Riesling wine depending on a series of bottling conditions, which differed in the free SO2 level in wine (low—13 mg/L, medium—24 mg/L, high—36 mg/L), CO2 treatment of the headspace.

Monitoring of mannoprotein cessions during wine aging on lees: development of a simple enzymatic method

Mannoproteins are polysaccharides released by Saccharomyces cerevisiae yeast during alcoholic fermentation or by enzymatic action during aging on yeast lees (autolysis). These molecules play a major role in wine characteristics processing, namely, in the tartaric stabilization and protein haze prevention; moreover, they improve color stability and reduce astringency.

Exploring the genetic diversity of leaf flavonoids content in a set of Iberian grapevine cultivars: preliminary results

The use of grapevine genetic diversity is a way to mitigate the negative impacts of climate change on viticulture systems. Leaf epidermal flavonoids (including flavonols and anthocyanins) are involved in plant defense mechanisms against environmental stresses, like high temperatures or excessive solar radiation [1,2]. Among other factors, they modulate light absorption, which reduces photoinhibition processes in photosynthetic tissues [1]. Therefore, the identification of grapevine cultivars with an increased content on leaf epidermal flavonoids arises as a potential avenue to improve grapevine tolerance to some detrimental environmental stresses.