terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Possible methods of adaptation to the effects of climate change in the Tokaj Wine Region 

Possible methods of adaptation to the effects of climate change in the Tokaj Wine Region 

Abstract

Viticulture’s adaptation to the harmful effects of climate change is globally the biggest challenge of the near future. Short, extremely intensive rainfalls and longer periods of drought are getting more frequent in the Tokaj Wine Region, where the majority of the vineyards are cultivated on steep slopes. Hence, erosion has high risk, especially when combined with the loess-based soils on about ten percent of the region. The environmentally beneficial cover crop and mulch usage can effectively reduce the risk of erosion, according to research done by the Tokaj Wine Region Research Institute of Viticulture and Oenology. Adjusting the optimal technology to the features of each plot is highly advised, paying attention to soil, geographical, climatological and vineyard characteristics. Careful choice of the rootstock variety of the vines could be an effective tool aiming better drought tolerance. In our research we compare the almost exclusively used, but less tolerant Teleki 5.C rootstock with internationally renowned drought-tolerant rootstocks as 140 Ruggeri, 1103 Paulsen and 110 Richer on multiple vineyard plots, grafted with Furmint and Hárslevelű, the most important, indigenous varieties of Tokaj. In cooperation with the Insitute of Karcag we also study the water usage characteristics of the rootstock/scion combinations in different types of lysimeters. The grape berry in maturation is especially sensible to the combination of extreme heat and high levels of UV radiation, which is getting more frequent in some vintages. As a result, higher amount of phenolic compounds in the wine could deterior its sensory properties and aging potential, an effect observed with Furmint and Hárslevelű. Application of plastic nets providing shade in the critical period, these effects could be reduced according to our preliminary results.

DOI:

Publication date: October 11, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Antal Kneip1*, Laura Varga1, Péter Balling1, György Zsigrai2, Tibor Kovács1, Péter Molnár1

1University of Tokaj-Hegyalja, Lórántffy Institute, Department of Viticulture and Oenology H-3950 Sárospatak, Eötvös út 7., Hungary
2Hungarian University of Agricultural and Life Sciences, Research Insistute of Karcag

Contact the author*

Keywords

climate change, cover crop, rootstock, shading net, Tokaj

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Indicators of Sustainable Vineyard Soil Management: Metrics for Assessing Environmental Impacts

The vital role of soils in supporting life on our planet cannot be overstated. Soils provide numerous ecosystem services and functions, including biomass production, carbon sequestration, physical support, biological habitat, and genetic reserve, among others. Understanding the characteristics and sensitivity of soils in a specific terroir, along with effective soil management practices, is crucial for the sustainable management of natural resources.

Wine odors: chemicals, physicochemical and perceptive processes involved in their perception

The odors of wines are diverse, complex and dynamic and much research has been devoted to the understanding of their chemical bases. However, while the “basic” chemical part of the problem, namely the identity of the chemicals responsible for the different odor nuances, was satisfactorily solved years ago, there are some relevant questions precluding a clear understanding. These questions are related to the physicochemical interactions determining the effective volatilities of the odorants and, particularly, to the perceptual interactions between different odor molecules affecting in different ways to the final sensory outputs.

Biodiversity and biocontrol ability of Trichoderma natural populations in soil vineyards from Castilla y León region (Spain)

Trichoderma is a microorganism present in many agricultural soils and some of its species could be used as natural biological control agents. In this work, the presence of natural populations of Trichoderma was estimated in soil vineyard and its biocontrol capacity against Phaeoacremonium minimum, one of the main agent causals of grapevine trunk diseases instead of using pesticides. Moreover, physicochemical variables in soil such as pH, organic matter and nutrients were evaluated to determine a possible correlation to natural populations of Trichoderma.

The generation of suspended cell wall material may limit the effect of ultrasound in some varieties

The disruptive effect exerted by high-power ultrasound (US) on plant cell walls, natural barriers to the diffusion of compounds of interest during the maceration of red wines, is established as the reason behind the chromatic improvement that its treatment causes. However, sometimes this improvement is not observed, especially with short maceration times. The presence of a high quantity of suspended cell wall material, which formation is favored by the sonication, could be the cause of this lack of positive results since this cell wall material has a high affinity for phenolic compounds.

Model-assisted analysis of the root traits underlying RSA genotypic diversity in Vitis: a promising approach for rootstock selection?

By dissecting the root system architecture (RSA) into its underpinning components (e.g. root emission, axial growth, radial growth, branching, root direction or tropism) and identifying the relationships between them, functional-structural 3D root models are promising tools for analyzing the diversity and complexity of root system phenotypes with Genotype × Environment interactions. The model parameters are assumed to be synthetic traits, less influenced by the environment, and consequently with less polygenic architectures than the integrative RSA traits they drive. Root models can serve as a basis for in silico development of root system ideotypes by highlighting the developmental processes and parameters that most likely influence RSA fitness.