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agronom.cc cultivar database

Variety traits

Grape acidity

Vitis vinifera L.

A key indicator of berry quality, determined by the content of tartaric and malic acids, which influences harvest timing and the stability of future wine.

In the reference 507 varieties crop Common grape vine, where this is mentioned in the description.

To assess grape acidity, two complementary parameters are used: titratable acidity, which measures the total concentration of organic acids, and active acidity (pH), which characterizes the degree of hydrogen ion dissociation. Titratable acidity is typically measured in grams per liter expressed as tartaric acid.

Typical values for titratable acidity in grape must range from 4–12 g/l, with 6.0–8.0 g/l considered optimal for red varieties and 6.5–8.5 g/l for white ones. The optimal pH range for grapes is 3.0–3.6; values below 3.0 hinder fermentation, while values above 4.0 reduce stability.

Acidity is a dynamic indicator: during the ripening process, the acid level in berries decreases while sugar content increases. Monitoring the balance of these substances under various climatic conditions allows agronomists to determine the optimal harvest time, preventing excessive acidity or a "flat" taste in the berries.

General information about the subject — on the page Fruit acidity.

Sources8

Varieties of Common grape vine mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Cabernet Franc

Active

Vitis vinifera L. · Common grape vine

DE ES FR MT SK
8 records

Syrah

Active

Vitis vinifera L. · Common grape vine

BG ES FR MT
8 records

Pinot gris

Active

Vitis vinifera L. · Common grape vine

BG ES FR MT
7 records

Verdejo

Active

Vitis vinifera L. · Common grape vine

BG ES FR
5 records

Tempranillo

Active

Vitis vinifera L. · Common grape vine

ES FR MT
5 records

Albarino

Active

Vitis vinifera L. · Common grape vine

ES MT UA
5 records

Colombard

Active

Vitis vinifera L. · Common grape vine

BG ES FR
5 records

Sauvitage

Active

Vitis vinifera L. · Common grape vine

Staatliche Lehr- und Versuchsanstalt für Wein- und Obstbau Weinsberg

DE
4 records

Ardthirtyseven

Active

Vitis vinifera L. · Common grape vine

Shachar Karniel

3 records

Carignan

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

FR MT
4 records

Barbera

Active

Vitis vinifera L. · Common grape vine

Instituto Sperimentale per la Frutticoltura

FR MT
4 records

Palava

Active

Vitis vinifera L. · Common grape vine

Vivai Research Center, CZ

SK UA
3 records

VDG002

Active

Vitis vinifera L. · Common grape vine

Rumen Conev^^^Daryl Somers

4 records

Iasma Eco 2

Active

Vitis vinifera L. · Common grape vine

Stefanini Marco

4 records

Iasma Eco 3

Active

Vitis vinifera L. · Common grape vine

Stefanini Marco

4 records

Beaugaray

Active

Vitis vinifera L. · Common grape vine

Sicarex Beaujolais S.A.S., Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

FR
3 records

Hibernal

Active

Vitis vinifera L. · Common grape vine

Prof. Dr. H. Becker

DE SK
4 records

Iniagrapone

Active

Vitis vinifera L. · Common grape vine

MARIA CAROLINA UQUILLAS HERRERA

ES
3 records

Gaminot

Active

Vitis vinifera L. · Common grape vine

Sicarex Beaujolais S.A.S., Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

FR
3 records

Ralli Seedless

Active

Vitis vinifera L. · Common grape vine

Ralli, Giuseppe|Victoria, Australia / Ralli, Iolanda|Victoria, Australia / Ralli, John|Victoria, Australia / Ralli, Joseph|Victoria, Australia

ES
3 records

IFG Fifteen

Active

Vitis vinifera L. · Common grape vine

David W.Cain

5 records

Katharina

Active

Vitis vinifera L. · Common grape vine

Jorg Wolf, D

3 records

Furmint

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

FR SK UA
3 records

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