terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Evaluation of terroir suitability for vine cultivation in new areas using geographic multi-criteria decision support

Evaluation of terroir suitability for vine cultivation in new areas using geographic multi-criteria decision support

Abstract

Based on historical vine cultivation, the recent development of wine production in Drama wine region (Greece) has led to vine cultivation expansion of white and red varieties. The current cultivation of 500 ha of vineyards is expected to increase in the coming years. Natural terroir units (NTU) have been designed recently to support the production of high quality wines in the region [1]. The aim of this work is to evaluate the relevancy of the proposed NTUs regarding their suitability to produce wines of specific sensorial identity, and to provide guidelines for correct site selection for the expanding wine industry of the region. The FAO Framework for Land Suitability Analysis was adapted to cover the main categories of input data: soil, climate, topography and other environmental properties [2]. The weights of each input data category have been developed with Analytical Hierarchical Process (AHP) based on interviews with the viticulturalists of the main wine producers. The geographic analysis was performed using the Agricultural Land Use Evaluation System (ALUES), which is based on the open-source statistical software R. The results reveal that the majority of the agricultural area is marginally to adequately suitable for the main white vine varieties currently cultivated, namely cv. Sauvignon blanc, with the exception of the cooler areas. On the contrary, red varieties (notably cv Cabernet Sauvignon) were  found to be more suitable to occupy the central part of the wine producing area. Nevertheless, it is possible to allocate white varieties to a wider range of sites with the adaptation of viticultural management.

Acknowledgements: The work presented is cofinanced by the ERDF and Greek national funds.

References:

1)  Karapetsas, N. et al, (2023). Delineating Natural Terroir Units in Wine Regions Using Geoinformatics. Agriculture, 13, 629, DOI:10.3390/agriculture13030629

2)  Bilas, G. et al., (2022). Land Suitability Analysis as a Tool for Evaluating Soil-Improving Cropping Systems. Land, 11, 2200, DOI:10.3390/land11122200

DOI:

Publication date: October 5, 2023

Issue: ICGWS 2023

Type: Article

Authors

Thomas Alexandridis1*, Nikolaos Karapetsas1, George Bilas1, Sefafeim Theocharis2, Stefanos Koundouras2

1 Laboratory of Remote Sensing, Spectroscopy and Geographical Information Systems, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2 Laboratory of Viticulture, School of Agriculture, Aristotle University of Thessaloniki, 54124, Greece

Contact the author*

Keywords

DSS, land suitability analysis, geographic information systems

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Unveiling a hidden link: does time hold the key to altered spectral signatures of grapevines under drought?

Remote sensing technology captures spectral data beyond the visible range, making it useful for monitoring plant stress. Vis-NIR (Visible-Near Infrared) spectroscopy (400-1000 nm) is commonly used to indirectly assess plant status during drought. One example is the widespread use of normalized difference vegetation index (NDVI) that is strongly linked to green biomass. However, a knowledge gap exists regarding the applicability of this method to all the drought conditions and if it is a direct correlation to the water status of the plant.

Implications of the nature of organic mulches used in vineyards on grapevine water status, yield, berry quality and biological soil health  

Climate emergency is going to affect the agricultural suistainability, wine grapes being probably one of the crops more sensitive to environmental constraints. In this context, mitigation strategies such as the revalorization of agricultural wastes are paramount to cope with the current challenges. The use of organic mulches has been reported to reduce soil water evaporation and improve vine water status, reduce soil erosion, and increase soil organic matter with little impact on berry quality. However, less is known about their effects on the microbiote of vineyards.

Application of UV-B radiation in pre- and postharvest as an innovative and sustainable cultural practice to improve grape phenolic composition

Ultraviolet radiation (UVR) is a minor part of the solar spectrum, but it represents an important ecological factor that influences many biological processes related to plant growth and development. In recent years, the application of UVR in agriculture and food production is emerging as a clean and environmentally friendly technology.
In grapevine, many studies have been conducted on the effects of ambient levels of UVR, but there are few considering the effects of UV-B application on grape phenolic composition under commercial growing or postharvest conditions.

Development of a new method for detecting acetic acid bacteria in wine

The presence of acetic acid bacteria in wine can lead to the appearance of acetic acid at concentrations above the perception threshold, causing the wine rejection by the consumer. During the winemaking process, avoiding the presence of acetic acid bacteria is very difficult, as there is always a residual population accompanying the wine[1], and the problem arises with the significant development of these microorganisms that metabolizes large amounts of acetic acid.
The concern of wineries to control the presence of acetic acid bacteria in wines during their conservation is due to the absence of simple and effective analyses that allow the detection of these microorganisms in the initial stages.

Study of Spanish wine sensory analysis data over a 3-year period

This study presents an investigation based on sensory analysis data of Spanish wines with geographical indications collected over a three-year period. Sensory analysis plays a crucial role in assessing the quality, characteristics, and perception of wines. The trained tasting panel at Dolmar Laboratory, accredited for objective sensory evaluation of wines since 2016, has been tasting over 5000 wines. However, it is since 2021, when a computer application for tastings was developed, that the digitalization of data allows for detailed statistical analysis of the results.