Terroir 2010 banner
IVES 9 IVES Conference Series 9 Tools for terroir classification for the grape variety Kékfrankos

Tools for terroir classification for the grape variety Kékfrankos

Abstract

A 3-year study was carried out in order to evaluate the ecophysiology, yield and quality characteristics of Vitis vinifera L. cv. Kékfrankos (syn. Limberger) at Eger-Nagyeged hill (steep slope) and at Eger-Kőlyuktető (flat) vineyard sites located in the Eger wine region, Hungary. The aim of this paper was to analyse the effect of ‘vintage’ and ‘terroir’ on the seasonal changes of Kékfrankos ecophysiology and its possible relationship with yield and wine composition. Grapevine physiological responses (midday- and pre-dawn water potential, pressure–volume analysis and gas-exchange), yield and wine composition of each vineyard were studied. Lower grapevine water supply was detected at Eger-Nagyeged hill in each season due to its steep slope and soil characteristics. Stomatal conductance, transpiration rate and photosynthetic production per unit leaf area were affected by water availability. Lower yield in Eger-Nagyeged hill was partly associated with decreased photosynthetic production of the canopy. Improved wine quality of Eger-Nagyeged hill was due to moderate water stress which induced higher concentration of anthocyanins and phenolics in the berries. There was a close relationship between environmental conditions, Kékfrankos gas exchange, water relations, yield and wine composition. Water deficit plays an important role in creating a terroir effect, resulting in decreased yield, better sun exposure of leaves and clusters and thus higher concentration of phenolics and anthocyanins. Although quality is mainly influenced by vintage differences, vineyard characteristics are able to buffer unfavourable vintage effects even within a small wine region. Stomatal conductance, pre-dawn water potential and climatic data may be reliable parameters for terroir classification, although variety–terroir interactions must always be considered.
Data of Geographycal Information System (GIS) performed in this study may serve as part of the data base, that we are engaged in the Eger wine district in Hungary.

Download the PDF

DOI:

Publication date: November 22, 2021

Issue: Terroir 2010

Type: Article

Authors

B. Bálo (1), Z. Szilágyi (1), E. Szücs (1), M. Marschall (2), Z. Simon (2) and Zs. Zsófi (1)

(1) Research Institute of Károly Róbert College for Viticulture and Enology, Eger, 3301 Eger Kőlyuktető PO Box 83, Hungary
(2) Department of Plant Physiology, Eszterházy Károly College, Eger, 3300 Eger Leányka Street 6, Hungary

Contact the author

Keywords

Climate, grapevine, photosynthesis, terroir, water relations, water deficit, wine composition, yield

Tags

IVES Conference Series | Terroir 2010

Citation

Related articles…

Oospore germination dynamics and disease forecasting model for a precision management of downy mildew 

Downy mildew, caused by Plasmopara viticola, is the most economically impactful disease affecting grapevines. This polycyclic pathogen triggers both primary and secondary infection cycles, resulting in significant yield losses when effective disease control measures are lacking. Over the winter, the pathogen survives by forming resting structures, the oospores, derived from sexual reproduction, which produce the inoculum for primary infections. To optimize grapevine downy mildew control and obtain the desired levels of production while minimizing chemical inputs, it is crucial to optimize the timeframe for fungicide application. Disease forecasting models are useful to identify the infection risk.
Read More

Evaluation of the enological potential of red grapes in southern Brazil

The Campanha Gaúcha is located in the pampa biome and has unique characteristics, as it is the hottest producing region with the lowest volume of rain in Southern Brazil. Furthermore, the large extensions of flat or low-sloping areas, harsh winters and great sunshine during the ripening period, made this the second largest producer of fine wines in Brazil.

Read More

Response of Shiraz/101‐14 mgt to in‐row vine spacing

Knowledge of vine reaction to plant spacing under high potential soil conditions is restricted. This study was done to determine effects of vine spacing

Read More

Effect of two water deficit regimes on the agronomic response of 12 grapevine varieties cultivated in a semi-arid climate

The Mediterranean basin is one of the most vulnerable regions to Climate Change effects. According to unanimous forecasts, the vineyards of Castilla-La Mancha will be among the most adversely affected by rising temperatures and water scarcity during the vine’s vegetative period. One potential strategy to mitigate the negative impacts of these changes involves the identification of grapevine varieties with superior water use efficiency, while ensuring satisfactory yields and grape quality.

Read More

Early likovrisi: the new white very early table grape seedless and resistant variety

This paper presents is the create, the study and ampelographic description the new «Early Likovrisi», that was created (2014) in Greece by Pantelis Zamanidis.

Read More