Glera
ActiveVitis vinifera L. · Common grape vine
INCONNU (FR)
FR
3 records
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.
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.
Dornfelder
ActiveVitis vinifera L. · Common grape vine
Land Baden-Württemberg, vertreten durch Staatliche Lehr- und Versuchs- anstalt für Wein- und Obstbau
BG
DE
SK
4 records
Calardis Blanc
ActiveVitis vinifera L. · Common grape vine
Reinhard Töpfer^^^Rudolf Eibach^^^Oliver Trapp
DE
4 records
Sauvignon
ActiveVitis vinifera L. · Common grape vine
INCONNU (FR)
FR
SK
3 records
Regent
ActiveVitis vinifera L. · Common grape vine
Prof. Dr.Dr.h.c. Gerhardt Alleweldt
BG
DE
4 records
Fiammetta
ActiveVitis vinifera L. · Common grape vine
Stefano Somma
Goldriesling
ActiveVitis vinifera L. · Common grape vine
INCONNU (FR)
DE
FR
2 records
Auxerrois
ActiveVitis vinifera L. · Common grape vine
INCONNU (FR)
DE
FR
2 records
Vidoc
ActiveVitis vinifera L. · Common grape vine
Bundesrepublik Deutschland vertreten durch Julius Kühn-Institut, Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)
Pinot Regina
ActiveVitis vinifera L. · Common grape vine
Andor Szabó^^^Pál Kozma^^^Sarolta Hoffmann
Clairette
ActiveVitis vinifera L. · Common grape vine
INCONNU (FR)
FR
2 records
Chasan
ActiveVitis vinifera L. · Common grape vine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
ES
FR
3 records
Gamay
ActiveVitis vinifera L. · Common grape vine
INCONNU (FR)
FR
2 records
Calabrese N
ActiveVitis vinifera L. · Common grape vine
Institut Francais de la Vigne et du Vin
FR
2 records
ARD7
ActiveVitis vinifera L. · Common grape vine
Shachar Karniel
Arinarnoa
ActiveVitis vinifera L. · Common grape vine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
FR
4 records
Donauriesling
ActiveVitis vinifera L. · Common grape vine
HÖHERE BUNDESLEHRANSTALT UND BUNDESAMT FÜR WEIN UND OBSTBAU
AT
DE
2 records
Rubin
ActiveVitis vinifera L. · Common grape vine
Petar Dimitrov, Yordan K. Ivanov, Kolyu I. Katerov, Ivan H. Dimitrov
BG
SK
4 records
Dolcetto
ActiveVitis vinifera L. · Common grape vine
Pepiniers Viticoles Bourget et Fils
FR
2 records
Gouveio
ActiveVitis vinifera L. · Common grape vine
Vitisnavarra
FR
2 records
Marsanne
ActiveVitis vinifera L. · Common grape vine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE-INRA
FR
3 records
Muscaris
ActiveVitis vinifera L. · Common grape vine
Land Baden-Wurttemberg, Germany
DE
3 records
Calardis Musqué
ActiveVitis vinifera L. · Common grape vine
Reinhard Töpfer^^^Rudolf Eibach^^^Oliver Trapp
DE
3 records
Calardis Soleil
Application submittedVitis vinifera L. · Common grape vine
Reinhard Töpfer^^^Oliver Trapp^^^Rudolf Eibach
DE
3 records