E3S Web Conf.
Volume 50, 2018XII Congreso Internacional Terroir
|Number of page(s)||7|
|Section||Valorización del Terroir|
|Published online||22 August 2018|
An example of a vine-physiology based fine-scale terroir study in the AOC Lavaux-region in Switzerland
CHANGINS, haute ecole de viticulture et oenologie,
route de Duillier 60,
2 Agroscope, route de Duillier 50, 1260 Nyon, Switzerland
3 Agroscope, avenue Rochettaz 21, 1009 Pully, Switzerland
4 Service de l'agriculture et de la viticulture (SAVI), Avenue de Marcelin 29, 1110 Morges, Switzerland
Corresponding author : M. Rienth: firstname.lastname@example.org
The aim of this ongoing study is to establish a vine physiology, berry quality - based methodology to analyze small scale differences between plots in a sub-region of the AOC Lavaux, in Switzerland. The production area Villette is almost to 100% planted with the cultivar Chasselas L. covering a total of 140 ha of steep slope terraced vineyards and offers an excellent site for terroir studies. A representative network of 23 plots covering the entire Villette production area was established in 2016 and 2017. Important differences in budburst and flowering were observed between plots whereas altitude was the main driver of precociousness. Expectedly most precious plots had highest sugar and lowest malic acid concentrations at final sampling date. Individual berry weight variation was up to 35 % at the last sampling (2.4 to 3.3 g) with variation in sugar concentration of 13 % (70-84° Oechsle). Sugar quantity per berry variation was however twice as high (26%), illustrating important differences in the sugar accumulation pattern between plots. Interestingly the latest plots accumulated highest sugar per berry with lowest concentration. The preliminary results of this ongoing study provide valuable information of the ripening potential of Chasselas in a small mesoclimate and illustrates the possibilities to characterize viticultural terroirs based on vine physiology measurements.
Key words: terroir / vine physiology / steep slope viticulture / AOC Lavaux / Villette / Chasselas
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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