terclim by ICS banner
IVES 9 IVES Conference Series 9 20-Year-Old data set: scion x rootstock x climate, relationships. Effects on phenology and sugar dynamics

20-Year-Old data set: scion x rootstock x climate, relationships. Effects on phenology and sugar dynamics

Abstract

Global warming is one of the biggest environmental, social, and economic threats. In the Douro Valley, change to the climate are expected in the coming years, namely an increase in average temperature and a decrease in annual precipitation. Since vine cultivation is extremely vulnerable and influenced by the climate, these changes are likely to have negative effects on the production and quality of wine.
Adaptation is a major challenge facing the viticulture sector where the choice of plant material plays an important role, particularly the rootstock as it is a driver for adaptation with a wide range of effects, the most important being phylloxera, nematode and salt, tolerance to drought and a complex set of interactions in the grafted plant.
In an experimental vineyard, established in the Douro Region in 1997, with four randomized blocs, with five varieties, Touriga Nacional, Tinta Barroca, Touriga Franca and Tinta Roriz, grafted in four rootstocks, Rupestris du Lot, R110, 196-17C, R99 and 1103P, data was collected consecutively over 20 years (2001-2020). Phenological observations were made two to three times a week, following established criteria, to determine the average dates of budbreak, flowering and veraison. During maturation, weekly berry samples were taken to study the dynamics of sugar accumulation, amongst other parameters. Climate data was collected from a weather station located near the vineyard parcel, with data classified through several climatic indices.
The results achieved show a very low coefficient of variations in the average date of the phenophases and an important contribution from the rootstock in the dynamic of the phenology, allowing a delay in the cycle of up to10-12 days for the different combinations. The Principal Component Analysis performed, evaluating trends in the physical-chemical parameters, highlighted the effect of the climate and rootstock on fruit quality by grape varieties.

DOI:

Publication date: May 31, 2022

Issue: Terclim 2022

Type: Article

Authors

Fernando Alves1, Joana Valente1, Frank S. Rogerson1, Ricardo Silva1, Cristina Carlos2,3, Catarina Barbosa2, Ana Morais2, Charles Symington1

1Symington Family Estates, Vinhos S.A. – Vila Nova de Gaia, Portugal
1ADVID Associação para o Desenvolvimento da Viticultura Duriense, Vila Real, Portugal
3CITAB, University of Trás-os-Montes and Alto Douro, Vila Real, PT

Contact the author

Keywords

climate, Douro, maturation, phenology, rootstock

Tags

IVES Conference Series | Terclim 2022

Citation

Related articles…

Analysis of vineyard soil after mulching with municipal solid waste (MSW)-compost

The use of compost as amendment in agriculture is a well-established practice, strongly recommended for numerous benefits.

Read More

The« Sigales’ method »

Le comportement de la vigne est étroitement lié aux propriétés hydriques des sols surtout dans leurs parties profondes.

Read More

Enological potential of red grapes: cultivars and geographic origin of vineyards

The study of technologic and phenolic maturation is very efficient to determinate quality potential of red grapes cultivars and clones under different maturity levels or geographic origins

Read More

Wine industry, digital transformation, and sustainability: a systematic literature 

This paper aims to (i) identify the state of the art regarding digital transformation in the transition to sustainability in the wine industry, (ii) analyze the adoption of digital technologies at different stages of the winemaking process and their contribution to the triple bottom line of sustainability, and (iii) present a research agenda that facilitates the development of the field, providing contributions to both literature and managerial practice.

Read More

Fleurtai, Soreli and Tocai Friulano: perspectives for quality integration of wine together with protection of the DOCG Lison Classico appellation

In modern viticulture, sustainability must be considered not only into the winery, but in the vineyard as well, being that with the most attentive interventions in order to protect the environment. In this context, the new “fungi resistant” varieties represent a valid option for reducing the negative environmental impact of agrochemicals used in viticulture, including those ones used in organic farming (given the copper accumulation into soils). Several application studies have demonstrated the enological validity of many resistant varieties, both in price and as a blend. Also, under the production point of view, the feasibility and economical sustainability of the new resistant varieties was verified. The aim of this work was to deepen the knowledge on the organoleptic characteristics of wines obtained from the Fleurtai and Soreli varieties and to compare them with the wine obtained from Tocai Friulano, the mother variety in the area destined for the production of the Lison Classico DOCG appellation. The purpose of the work is then to verify the possibility of introducing resistant varieties into the DOCG while maintaining the wine name of the appellation linked to the territory.

Read More