Terroir 2020 banner
IVES 9 IVES Conference Series 9 A vine physiology-based terroir study in the AOC-Lavaux region in Switzerland

A vine physiology-based terroir study in the AOC-Lavaux region in Switzerland

Abstract

OENO One – Special issue

Understanding how different pedoclimatic conditions interact with vine and berry physiology, and subsequently impact wine quality, is paramount for an good valorization of viticultural terroirs and can help to optimize mitigation strategies in the face of global warming.
The aim of the present study was to establish terroir zones in a steep slope region in Switzerland based on vine and berry physiology. The study area, Villette in the AOC Lavaux, was a unique experimental site due to the homogeneity of plant material in a relatively small microclimate (140 ha) and a multiplicity of different expositions, soil types and altitudes. Vine and berry physiology as well as temperature of twenty-two plots were monitored during three consecutive seasons to investigate whether a link with pedoclimatic parameters can be established.

The annual temporal variation of the average temperature was 142 growing degree days (GDD) over all years. Remarkably, spatial temperature variability was twice as high, with a variation between most extreme plots of 395 GDDs on average over all years. PCA and hierarchical clustering of assessed vine and berry physiological parameters resulted in a vintage dependent grouping of plots differing between years, which was not congruent with geological entities. This highlights the importance of the vintage effect, which had a large influence on vine and berry physiology and impacted terroir zones more than soil groups. Important differences in budburst and flowering were observed between plots, whereas altitude was the main driver of precocity in all years, being relatively independent of the vintage, which confirms the importance of topography in viticultural terroirs.

Download the PDF

DOI:

Publication date: March 16, 2021

Issue: Terroir 2020

Type: Video

Authors

Markus Rienth1*, Frédéric Lamy1, Patrick Schoenenberger1, Dorothea Noll1, Fabrice Lorenzini2, Olivier Viret4and Vivian Zufferey3

1 Changins, University of Sciences and Art Western Switzerland, Changins College for Viticulture and Enology, route de Duillier 60, 1260 Nyon, Switzerland
2 Agroscope, route de Duillier 50, 1260 Nyon, Switzerland
3 Agroscope, avenue Rochettaz 21, 1009 Pully, Switzerland
4 Service de leo’agriculture et de la viticulture (SAVI), Avenue de Marcelin 29, 1110 Morges, Switzerland

Contact the author

Keywords

Viticultural terroir, berry ripening, temperature variability, phenology, climate change

Tags

IVES Conference Series | Terroir 2020

Citation

Related articles…

Vine environment interaction as a method for land viticultural evaluation. An experience in Friuli Venezia Giulia (N-E of Italy)

For a long time environment was known as one of the most important factors to characterize the quality of wines but at the same time it appears very difficult to distinguish inside the “terroir” the role of the single factor. These remarks partially explain why methods for viticultural evaluation are often quite different (Amerine et al., 1944; Antoniazzi et al., 1986; Asselin et al., 1987; Astruc et al., 1980; Bonfils, 1977; Boselli, 1991; Colugnati, 1990; Costantinescu, 1967; Costantini et al., 1987; Dutt et al., 1981; Falcetti et al., 1992; Fregoni et al., 1992; Hidalgo, 1980; Intrieri et al., 1988; Laville, 1990; Morlat et al., 1991; Scienza et al., 1990; Shubert et al., 1987; Turri et al., 1991).

Read More

Development of spectral indices to monitoring non-destructive of ripeness for water stressed grapevine (Vitis vinifera L.) using contour map optimization

Accurate and non-destructive monitoring of grape ripening is essential for optimising harvest decisions, particularly under water stress conditions.

Read More

VitiProtect–Development and testing of a downy mildew AI forecasting model for Swiss viticulture

Downy mildew (Plasmopara viticola) is a fungal pathogen that causes a destructive disease in grapevines (Vitis vinifera).

Read More

Hyperspectral imaging for the appraisal of varietal aroma composition along maturation in intact Vitis vinifera L. Tempranillo Blanco berries

The knowledge of the grape aromatic composition during ripening provides very important information for winegrowers, who may carry out different viticultural practices, or determine the harvest date more accurately. However, there are currently no tools that allow this measurement to be carried out in a non-invasive and rapid way. For this reason, the aim of this work was to design a non-invasive methodology, based on hyperspectral imaging to estimate the aromatic composition and total soluble solids (TSS) of Tempranillo Blanco berries during ripening.

Read More

Contribution à l’étude des relations entre des variables de fonctionnement des terroirs du Val de Loire et l’évolution des acides organiques des baies durant la maturation du raisin

Dans les terroirs du Val de Loire, la précocité du cycle de la vigne et son alimentation en eau sont des variables de fonctionnement qui influent de manière importante sur la composition des baies à maturité.

Read More