Terroir 1996 banner
IVES 9 IVES Conference Series 9 Le zonage viticole: instrument pour la récuperation d’un ancien cépage des collines de Conegliano (Verdiso – V. vinifera)

Le zonage viticole: instrument pour la récuperation d’un ancien cépage des collines de Conegliano (Verdiso – V. vinifera)

Abstract

Dans le contexte viticole actuel, la prise de conscience que chaque cépage ne trouve son expression qualitative maximale que dans certains terroirs bien définis, assume une signification plus importante vu l’effort unanime fourni pour maximiser le résultat oenologique. Des cépages présentant des potentiels d’adaptation réduits, ont encore plus besoin d’un emplacement territorial précis. C’est ce qui s’est passé pour le cépage Verdiso, ancienne variété de la Prov. de Treviso (Italie du Nord-Est), dont la diffusion s’est réduit progressivement au cours des 50 dernières années, partant de quelques milliers d’hectares jusqu’arriver aujourd’hui à quelques centaines à peine. Cela est dû à la fragilité agronomique du cépage, qui n’assure pas toujours une constance productive, sanitaire et qualitative. La recherche d’une durée de trois ans, à travers l’étude de la réponse qualitative du cépage aux variations de la zone de culture, a tenté de mettre en évidence les caractéristiques du milieu (sol, température, pluie, etc.) qui sont les plus adaptées pour obtenir un résultat qualitatif appréciable. Dans ce but, le territoire de culture actuel a été divisé en 5 sous-zones homogènes quant à leur climat, leur origine, l’évolution et l’état actuel du sol. L’évaluation systématique des paramètres du milieu, de ceux productifs et qualitatifs du raisin et de la qualité organoleptique du vin obtenu, a ammené à circonscrire deux sous-zones qui, par rapport aux autres, se sont distinguées grâce à une meilleure qualité du produit. Ce travail a fourni un exemple clair d’applicabilité de la méthodologie des zonages, afin de sauvegarder et relancer un cépage autoctone destiné sinon à se perdre.

DOI:

Publication date: February 24, 2022

Issue: Terroir 2000

Type: Article

Authors

Tomasi D., Calò A., Costacurta A., Zanzotto A.

Istituto Sperimentale per la Viticoltura – Viale XXVII Aprile, 26 – 31015 Conegliano (TV) – Italie

Tags

IVES Conference Series | Terroir 2000

Citation

Related articles…

Effect of abiotic stress and grape variety on amino acid and polyamine composition of red grape berries

Vines are exposed to environmental conditions that cause abiotic stress on the plants (drought, nutrient and mineral deficits, salinity, etc.). Polyamines are growth regulators involved in various physiological processes, as in abiotic plant stress responses. Stressful conditions can modify grape’s composition, and in this work, we have focused on studying the effect of abiotic stress on the composition of polyamines and amino acids in grapes. In addition, the effect of grape variety on these compounds has been studied.

Influence Of Different Grape Polysaccharides On Phenolic Compounds And Colour Characteristics Of Tempranillo Red Wines

Polysaccharides (PS) are one of the main compounds found in wines, and they come mainly from the grape cell walls or from the yeasts, and they play an important role in the technological and sensory characteristics of wines. Polysaccharides obtained from yeasts have been more studied, especially mannoproteins, since there are commercial products.

Valpolicella chemical pattern of aroma ‘terroir’ evolution during aging

Valpolicella is an Italian region famous for the production of high quality red wines. Wines produced in its different sub-regions are believed to be aromatically different, as confirmed by recent studies in our laboratory. Aging is a very common practice in Valpolicella and it is required by the appellation regulation for periods up to four years. The aim of this study was to investigate the evolution, during aging, of volatile chemical composition of Valpolicella wines obtained from grapes harvested in different sub-regions during different vintages.

Grape seed powder as an alternative to bentonite for wine fining

PR proteins can cause haze in wines, and the risk is to keep the wine unsold. Generally, in winemaking bentonite solves this problem by removing proteins, but it is not a renewable resource, has poor settling, which means difficulty in filtering after use and a considerable loss of wine, it is not a specific adsorbent and may reduce aromas and flavor compounds

The influence of soil management practices on functional traits and biodiversity of weed communities in Swiss vineyards

Green cover in vine rows provides many ecological services, but can also negatively impact the crop, depending on the weed species. The composition of a vineyard weed community is influenced by many parameters. Ensuring an evolution of the vine row flora into a desired direction is therefore very complex. A key step towards this goal is to know which factors influence the establishment of the weed community and which types of communities are best suited for vineyards. In this study, we analysed the weed communities of several vineyards in the Lake Geneva region (379 botanical surveys on 117 plots), with the aim to highlight the links between soil management practices (chemical and mechanical weeding, mowing, mulching roll) and phytosociological profiles, biodiversity and selected functional traits (growth forms, life strategies, root depth). T