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…

One-year aging of a Sangiovese red wine in tanks of different materials: effect on chemical and sensory characteristics

The aim of this study was to evaluate how the different tank materials could affect the chemical and sensory characteristics of a Sangiovese red wine during one-year aging.

Aptitude du cépage Chenin à l’élaboration de vins liquoreux en relation avec certaines unités terroirs de base de A.O.C. Coteaux du Layon

Massif and the first sedimentary formations of the western aureole of the Paris Basin. If it is found all over the world (California, Israel, South Africa), it is in this region that it best asserts its identity. It is one of the most interesting grape varieties due to the variety and complexity of the wines it can produce. It can give very dry or very sweet, still or sparkling wines, fresh when young and sublime when ageing, expressing the characteristics of each vintage as much as those of the terroir. The Chenin is a faithful witness of its geographical, geological, pedological and climatic environment; he is the foil of the land. It has strong aptitudes for the production of sweet wines conditioned by overripe grapes often botrytised in the AOC Coteaux du Layon.Massif and the first sedimentary formations of the western aureole of the Paris Basin. If it is found all over the world (California, Israel, South Africa), it is in this region that it best asserts its identity. It is one of the most interesting grape varieties due to the variety and complexity of the wines it can produce. It can give very dry or very sweet, still or sparkling wines, fresh when young and sublime when ageing, expressing the characteristics of each vintage as much as those of the terroir. The Chenin is a faithful witness of its geographical, geological, pedological and climatic environment; he is the foil of the land. It has strong aptitudes for the production of sweet wines conditioned by overripe grapes often botrytised in the AOC Coteaux du Layon.

Monitoring of mannoprotein cessions during wine aging on lees: development of a simple enzymatic method

Mannoproteins are polysaccharides released by Saccharomyces cerevisiae yeast during alcoholic fermentation or by enzymatic action during aging on yeast lees (autolysis). These molecules play a major role in wine characteristics processing, namely, in the tartaric stabilization and protein haze prevention; moreover, they improve color stability and reduce astringency.

Vitamins in musts : an unexplored field

Vitamins are major compounds, involved in several prime yeast metabolic pathways. Yet, their significance in oenology has remained mostly unexplored for several decades and our current knowledge on the matter still remaining obscure to this day. While the vitaminic contents of grape musts have been approached in these ancient investigation

Metschnikowia pulcherrima: A valuable microbial bioresource from wine for smart agrifood

The yeast Metschnikowia pulcherrima is a microorganism of great biotechnological interest, both for improving winemaking processes and for other applications outside the wine supply chain.