Courbu B
Name of the variety in France
Courbu
Origin
Courbu is a native variety from the Pyrenees vineyards. This variety does not correspond to the white form of Courbu noir. It is a distinct variety.
Synonyms
In France, this variety can officially be called "Gros Courbu" regarding plant propagation material. In Spain, Courbu is officially designated as "Hondarrabi Zuri".
Legal information
In France, Courbu is officially listed in the "Catalogue of vine varieties" on the A list and classified. This variety is also listed in the catalogue of Spain.
Use
Wine grape variety.
Evolution of cultivated areas in France
1958 1968 1988 2000 2008 2018
ha 295 142 86 48 44 27
Descriptive elements
The identification is based on:
- the red and very bronzed young leaves,
- the large adult leaves, with three or five lobes, shallow lateral sinuses, a closed petiole sinus with overlapping lobes, short teeth compared to their width at the base with straight or convex sides, a very blistered, twisted or revolute leaf blade, undulate near the petiole sinus, and on the lower side of the leaves, a low density of erect and prostate hairs,
- the round-shaped or obloid berries, that are greenish yellow in color or slightly pink when ripe.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 223 243 182 188 252 248 233 239
Allel 2 149 236 247 188 204 252 248 235 271
Phenology
Bud burst: 7 days after Chasselas.
Grape maturity: mid-season, 3 weeks and a half to 4 weeks after Chasselas.
Suitability for cultivation and agronomic production
This variety is sensitive to the wind. Courbu must be trained and pruned long. It is best to graft onto rootstock with low to moderate vigor.
Susceptibility to diseases and pests
Apart from grey rot, this variety does not seem to have any particular susceptibilities.
Technological potentiality
The bunches are small and the berries are very small. This variety produces high sugar content musts which are moderately acidic. Courbu can be used to make fine sweet wines or dry wines.
Clonal selection in France
The three certified Courbu clones carry the numbers 726, 727 and 812. A conservatory of 80 or so clones is planted in plots located in Irouleguy and Jurançon (French department of Pyrénées-Atlantiques).
Bibliographic references
- Catalogue des variétés et clones de vigne cultivés en France. Collectif, 2007, Ed. IFV, Le Grau-du-Roi, France.
- Documentary collections of the Centre de Ressources Biologiques de la Vigne de Vassal-Montpellier, INRAE - Montpellier SupAgro, Marseillan, France.
- Dictionnaire encyclopédique des cépages et de leurs synonymes. P. Galet, 2015, Ed. Libre&Solidaire, France.
- Traité général de viticulture, Ampélographie. P. Viala and V. Vermorel, 1901-1909, Ed. Masson, Paris, France.
Description of clones certified in France
Identity and availability Agronomic data Technological data Autres informations
Clone no. Marque Origin Selection Year of
certification
Agronomic
references
Surface area used
for propagation (year)
Fertility Production
level
Bunch
weight
Vigor Berry
size
Susceptibility
to grey rot
Sugar
level
Color
potential
Titrable
acidity
Tannic
structure
Aromatic
intensity
Oenological
suitability
New General
note
Agro-tecnic
note
Note
agronomique
Agronomic
note
Links
726 Pyrénées-Atlantiques ENTAV 1980 Sud-Ouest Clone not widely distributed, consistent with the characteristics of the variety.
727 Pyrénées-Atlantiques ENTAV 1980 Sud-Ouest Clone not widely distributed, consistent with the characteristics of the variety.
812 Pyrénées-Atlantiques INRA 1985 Sud-Ouest low high looser bunches