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.

Download the PDF

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…

A 4D high resolution vineyard soil assessment for soil-hydrological interpretation in combination with automated data analysis and visualization to manage site-specific grape and wine quality

A Visual Information eNvironment for Effective agricultural management and Sustainability (VINES) is under development, which can provide significant competitive advantages to winegrowers by sustaining their appellation-specific grape and wine qualities and yields while measurably conserving water resources.
Read More

Wines produces without SO2 addition: which impact on their colour? An approach at the global and pigments levels

Since the 18th century, sulfur dioxide (SO2) is used in winemaking. Added at different steps, its antimicrobial but also antioxidasic and antioxidant properties are very helpful for winemakers. Nevertheless sulfur dioxide has a real potential health impact, particularly for sensitive consumers often highlighted by hygienists. Nowadays, a serious trend for “natural” wines (i.e. produced without any additives), as described by their producers, could be observed on the French market what match with a proliferation of wines elaborated without any sulfite addition. 

Read More

The use of elicitors in viticulture: a tool to obtain highly colored wines with a reduce alcohol content?

Climate change is causing a gap between the technological and phenolic maturity of grapes, resulting in wines with high alcohol content and low polyphenol concentration. Another phenomenon associated with high temperatures and whose effect is more pronounced if the harvest is delayed is the decrease in the acidity of the grapes, mainly in malic acid, and an increase in pH caused by the accumulation of potassium derived from the increase in temperature. Therefore, climate change and the effects it causes on the vine leads to unbalanced wines, with high alcohol content and lack of color, with green tannins, astringency and excessively low acidity if not corrected.

Read More

Applying value proposition design to collective strategic actions in family wineries: enhancing territorial resources in Vale dos Vinhedos, Brazil

The study aims to propose collective strategic actions for family wineries, promoting their competitiveness and the valorization of territorial resources.

Read More

Water dynamics of Touriga-Nacional grapevines trained in cordon and guyot systems under Mediterranean climate conditions

Aims: The aims of the present study were to (1) evaluate the water dynamics of Touriga-Nacional grapevines trained to spur pruned cordon and Guyot systems and (2) assess the effect of variable water availability in a commercial vineyard located in the Demarcated Douro Region (DDR), Portugal.

Read More