Terroir 2006 banner
IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2006 9 Influence of vine water status (Terroir 2006) 9 Cover crop influence on water relations, yield, grape and wine composition of Pinot noir

Cover crop influence on water relations, yield, grape and wine composition of Pinot noir

Abstract

The effect of cover crop on the water relations, yield and grape composition of Pinot noir vines was investigated during two seasons (2003 and 2004) in a gravely soil located in Tarragona (Spain). Seventeen-year-old vines, grafted onto R110 and trained onto a Ballerina training system, were used. Treatments (Rye grass and a clean tillage control) were replicated four times in a block layout. Leaf water potential was measured during mid-day at pea size, véraison and ripeness stages. Berry composition was determined at ripeness. At harvest, yield components were determined and one wine made per treatment. Severe water stress occurred in 2003, which resulted in the grass cover treatment producing less leaf area per vine and a reduction in leaf water potential during the day. However, in 2004, significant differences occurred only at 8:00. The same pattern was observed for berry weight and the yield parameters; they were lower in 2003 with cover grass. The anthocyanin content, total soluble solids and titratable acidity decreased strongly after véraison, only in 2003. Grass cover had a negative effect on total phenol and alcohol contents of wines in the extremely dry year. Contrasting effects were found in 2004.

DOI:

Publication date: January 12, 2022

Issue: Terroir 2006

Type: Article

Authors

Montse NADAL

CeRTA, Dept de Bioquímica i Biotecnologia, Facultat d’Enologia de Tarragona. Universitat Rovira i Virgili,
Campus Sescelades, Marcel·lí Domingo, s/n, 43007 Tarragona, Espagne

Contact the author

Keywords

cover crop, leaf water potential, yield, ripeness, wine composition

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

Carbon footprint in Austrian viticulture – Evaluation of the main polluters and possible solutions in entire the production chain

The sustainability certification ‘nachhaltig austria’ (www.sustainableaustria.com) has been offered to austrian wineries in an online version for 10 years and over 25% of the austrian wine-growing area is now certified. Since the 2022 harvest, ‘nachhaltig austria’ has automatically calculated the carbon footprint for each winery, per hectare of vineyard, per litre of bulk wine and per 0.75-litre bottle (poelz, w. And rosner, f.g. 2023). In last year’s publications and numerous presentations at national and international level, topics such as refilling glass bottles, lightweight glass bottles, renewable energy, … Etc.

Organic and biodynamic sustainable productions and effect on eligibility and peculiarity of a typical wine

The wine industry is currently shifting toward more sustainable production systems. There are many reasons for this as the interest of people over climate change and, consequently the wine consumer’s choice toward organic and biodynamic, reduced carbon-footprint, vegan and other environmentally friendly wines. While the viticultural effects of biodynamic and organic practices on wine grapes have been investigated, there is a lack in literature on the general effect on the final quality of wine

Application of satellite-derived vegetation indices for frost damage detection in grapevines

Wine grape production is increasingly vulnerable to freeze damage due to warming climates, milder winters, and unpredictable late spring frosts. Traditional methods for assessing frost damage in grapevines which combine fieldwork and meteorological data, are expensive, time-consuming, and labor-intensive. Remote sensing could offer a rapid, inexpensive way to detect frost damage at a regional scale. Remote sensing approaches were used to assess freeze damage in grapevines by evaluating satellite-derived vegetation indices (VIs) to understand the severity and spatial distribution of damage in several New York vineyards immediately after a frost event (May 17th-18th, 2023). PlanetScope 3m satellite images acquired before and after the freeze were used to map damage and measure changes in VIs for vineyards in the Finger Lakes region.

Measuring elemental sulfur in grape juice in relation to varietal thiol formation in Sauvignon blanc wines.

Aim: Sauvignon blanc displays a range of styles that can include prominent tropical and passionfruit aromas. Both sensory evaluation and chemical analysis have confirmed the above-average presence of ‘varietal thiols’ in the Sauvignon blanc wines from Marlborough, New Zealand.

Effect of stilbenes on malolactic fermentation performance of onoccocus oeni and lactiplantibacillus plantarum strains in wine production

Malolactic fermentation (MLF) is an important step in winemaking to improve wine quality through deacidification, increased microbial stability, and altered wine flavor. The phenolic composition of wine influences the growth and metabolism of lactic acid bacteria (lab) used for MLF.