Interactions Of Climate, Soil, And Grapevines On Wine And Terroir

Interactions Of Climate, Soil, And Grapevines On Wine And Terroir
Kees van Leeuwen, Professor of Viticulture, Bordeaux University

Horticulture Section seminar series, October 20, 2014
School of Integrative Plant Science
Cornell University

In wine production, quality and reputation have a huge impact on selling prices. The latter are highly variable, ranging from 5$ to several hundreds of dollars a bottle. Terroir is an important clue for wine quality and typicity and thus for crop value. The terroir effect deals with the impact of environmental factors, in particular soil and climate, on vine behaviour. Because soil and climate are site specific, terroir and origin are closely related concepts. Terroir expression is optimized when grapes ripen at the end of the growing season (late September or early October on the Northern hemisphere). Too early ripening results in the production of wines lacking freshness and aroma expression and too late ripening promotes green flavors and excessive acidity. Timing of ripeness is driven by temperatures, but can also be managed through the choice of the grapevine variety. Vine development and fruit composition are further influenced by water and nitrogen supply. In a deep rooting perennial species like the vine, water and nitrogen status depend on soil type and climatic factors. They can further be optimized trough management practices.

This entry was posted in Wine.

2 comments

  1. Matti Kuukkanen says:

    There wasn’t an explanation about how terroir is expressed in wine; how can one taste/notice/detect terroir in wine? From what i undestand, most of the cases where people talk about the taste of terroir, it’s really about the taste of fermentation processes, certain (wild) yeast strains, reductive winemaking, too much sulfur, brettanomyces, volatile acidity, volatile thiols..

  2. Vineleak says:

    Terroir is about the place (terre => Land), the ripening is something else… in France the word terroir is used for all sorts of Drinks and Foods even meat

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