Terroir 2014 banner
IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2014 9 Grape growing soils, topographic diversity 9 Terroir influence on growth, grapes and grenache wines in the AOC priorat, northeast Spain

Terroir influence on growth, grapes and grenache wines in the AOC priorat, northeast Spain

Abstract

The Mediterranean climate of The Priorat AOC, situated behind the coastal mountain range of Tarragona, tends towards continentality with very little precipitation during the vegetation cycle. The soil is poor, dry and rocky, largely composed of slate schist, known as “llicorella”. Vines primarily grow on steep slopes and terraces.

To evaluate how the Priorat unique terroir influences the quality of its wines, two plots of Grenache were chosen, both grafted onto R110. In the study those two sites are referred to as: LO (in the township of Lloar) and EM (in the township of Molar), distinct topographic locations within the AOC. Grenache vines in LO are 14 years old growing in east-south facing terraces. Grenache vines in EM are 16 years old, and south-facing. Both vineyards feature VSP trellising with 2 wires (70cm height). The vines are pruned as bilateral cordon. During 2010 and 2011, leaf area (LA) at the phenological stages of pea size (PS), veraison (V), final ripening (RP) and post-harvest (PH) was measured. Berry phenolic maturity was monitored and the chemical analyses of the wine were carefully evaluated.

The 2010 vintage was characterized by a heterogenic distribution of rainfall and a lower vapor deficit pressure than 2011. Total leaf area (TLA) within parcels did not differ significantly in the temperate year. In the drier vintage, however, vines from LO developed more leaf area than those growing in the south-facing terraces at EM. Nevertheless, the total leaf area before harvest was similar. The heterogeneity in the soil profile at the LO location could likely induce a variation in the drainage capacity, affecting the vine growth (TLA). Small berries from EM produced the highest levels of anthocyanins. EM always has the highest content in ANT T, ANT E, IPT and DMACA in both years. Concerning the wines, the highest concentration of anthocyanin were found in the EM treatment, with greater differences that LO in 2010. Grenache vines growing under warm climate conditions (Priorat AOC), in heterogeneous-stony soils, showed notably variability in the wine composition in front of climate change.

DOI:

Publication date: July 31, 2020

Issue: Terroir 2014

Type: Article

Authors

Montserrat NADAL and Antoni SANCHEZ-ORTIZ

Dept Bioquímica i Biotecnologia, Facultat d’Enologia de Tarragona, URV. Campus Sescelades, 43007 Tarragona, Spain.

Contact the author

Keywords

Priorat, Grenache, vapor pressure deficit, stony soil, schist, phenolics

Tags

IVES Conference Series | Terroir 2014

Citation

Related articles…

Vineyard soils and landscapes of the Burgundy Côte (France): a historical construction worth preserving

The construction of vineyard landscapes along the Burgundy Côte is the result of geological processes and of human labour. Substratum diversity in this vineyard is the result of a very long history explained by the diversity of Jurassic sedimentary facies and Tertiary tectonic activity. The nature and thickness of Quaternary deposits (Weichselian scree debris and alluvial fans) reflect sediment dynamics concurrent with the last glaciation.

Effect of spray with autochthonous Trichoderma strains and its secondary metabolites on the quality of Tempranillo grape

Trichoderma is one of the most widely used fungal biocontrol agents on vineyards due to its multiple benefits on this crop, such as its fungicidal and growth promoting capacity. In this work, we have analyzed the effect on the concentration of nutrients in grapevine leaves and on the quality of the grape must after spraying an autochthonous strain of Trichoderma harzianum and one of the main secondary metabolites produced by this genus, 6-pentyl-α-pyrone (6PP).

Optimisation de la fertilisation du Cot sur le Causse de l’Appellation d’Origine Contrôlée Cahors

The Appellation d’Origine Contrôlée area of ​​Cahors (Lot) covers an area of ​​21,700 ha, spread over 45 municipalities, of which only 4,300 are planted with vines. The main grape variety of this AOC is the Cot noir which represents 70% of the grape varieties, thus giving their typicality to the wines of this region; but despite this importance, to our knowledge, its physiology has remained relatively unstudied.

Impact of environmental conditions in vscs production during wine fermentation by Saccharomyces cerevisiae

The aroma of wine is one of the most important determinants of quality as it strongly influences the consumer’s acceptance or rejection. Among the thousands of molecules comprising the wine aroma, sulfur-containing compounds can be considered as a “double-edged sword”: some of them, deriving from varietal precursors provide fruity pleasant aromas, while other ones, produced by yeast metabolism are related to “unpleasant” aromas

Study of wine-growing land (“terroir”) characteristics in the canton of Vaud (Switzerland): ecophysiological behaviour of the vine (cv. Chasselas)

A study of the physiological and agronomical behaviour of the vine (cv. Chasselas) was conducted between 2001 and 2003 by the Swiss Federal Research Station for Plant Production at Changins (Agroscope RAC Changins) on various wine-growing farms (terroirs) in the Canton of Vaud (Switzerland), as part of a study project on Vaudois