terclim by ICS banner
IVES 9 IVES Conference Series 9 Teran grape quality influenced by different irrigation treatments

Teran grape quality influenced by different irrigation treatments

Abstract

Teran is an important native variety grown in Istria known for its high level of polyphenols and intensive fruity character of wines. Teran’s yield and wine typicity have recently decreased due to climate changes (increased temperature and severe drought). Four drip irrigation treatments (25%, 50%, 75%, 100% of total evapotranspiration) and control were investigated for the influence on Teran yield and quality, where focus was given to the content and composition of main polyphenolic and volatile compounds in grapes. Irrigation positively influenced yield since the berry weight also increased with increased irrigation. This resulted in the highest yield for 100% ETc. The highest concentration of polyphenols had control, while the irrigation treatments did not differ significantly. However, there was a tendency to decrease concentration with increased irrigation probably due to the increased berry size, which led to a dilution effect. Regarding the volatile compounds, the most abundant group was alcohols, followed by acids. It seems that volatiles were not affected by irrigation as there is no significant difference between control and treatments, as well as among treatments. Even though the total content of volatiles was similar between treatments, there were significant differences among them in the content of esters, terpenes, and norisoprenoids, all very potent volatiles that can have an important impact on the sensory profile. Precise irrigation is necessary for yield management of Teran in changing environments due to the limited water availability, but grape quality and composition response must be precisely monitored to preserve wine quality and typicity.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Iva Šikuten1*, Darko Preiner1, Zvjezdana Marković1, Monika Zovko1, Davor Romić1, Marijan Bubola2, Jasminka Karoglan Kontić1

1 University of Zagreb Faculty of Agriculture, Svetošimunska 25, Zagreb, Croatia
2 Institute of Agriculture and Tourism Poreč, Karla Huguesa 8, Poreč, Croatia

Contact the author*

Keywords

Teran, Croatia, irrigation, polyphenols, volatiles

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Influence of dehydration and maceration conditions on VOCs composition and olfactory profile of Moscato Bianco passito sweet wine

Among the Vitis vinifera L. cv. Moscato, Moscato Bianco is the oldest and most cultivated one in Europe (1). According to the OIV Focus 2015, Italy is the country with the largest cultivated area of Moscato Bianco with about 12500 hectares (2), that is used to produce well-known wines (i.e., Moscato Passito in Piedmont, Moscato di Trani in Puglia, and Moscatello di Montalcino in Tuscany), mainly obtained from partially dehydrated grapes (1). Different dehydration techniques can strongly modify the chemical compounds of oenological interest, among which Volatile Organic Compounds (VOCs) (1) that are the main responsible for the varietal sensory character of the final wine.

Spatial Analysis of Climate in Winegrape Growing Regions in Portugal

Spatial climate data at a 1 km resolution has allowed for a comprehensive mapping and assessment of viticulture DOs regions in Portugal. Overall the 50 regions and sub-regions in Portugal range

Scalable asymptomatic grapevine leafroll virus complex-3 detection through integrated airborne imaging spectroscopy, autonomous robotics, and cloud computing

The past three decades of terrestrial remote sensing research have delivered unprecedented insights into our fundamental ability to detect, quantify, and differentiate plant disease (Gold 2021). However, much of our fundamental knowledge in this domain has come from studies in non-agricultural systems and until recently, most agricultural studies, when extant, have focused on tree crops where canopy closure and large plot and plant size facilitate stress detection at low spatial resolution. Recent engineering innovations and advancements in constellation architecture design have refined the accuracy and scalability of airborne and spaceborne sensing platforms, enabling us to monitor diverse specialty crops, including grapevine, planted in smaller, spatially varied fields.

Effect of soil texture on early bud burst

Notre objectif est d’étudier de façon précise les relations entre la physiologie de la vigne et le sol, en prenant en compte l’effet millésime. Nous avons plus précisément étudier la précocité de débourrement de la vigne (stade D) en fonction de la texture du sol et plus particulièrement de la teneur en éléments grossiers.

Convergence and divergence in chemical and sensory profiles of disease-resistant and Vitis vinifera white wines from South Tyrol: addressing strategies for market adoption

This study investigates the chemical and sensory profiles of white wines produced from disease-resistant hybrid grape cultivars (DRHGCs) compared to traditional Vitis vinifera L. cultivars in South Tyrol, Italy.