Cot N
Name of vine variety in France
Cot
Origin
This vine variety is originally from the South-west of France.
Synonymy
In France, this variety can officially be called "Malbec N" with regard to plant propogating material. In the European Union, Cot N can officially be called by other names: Kot (Bulgaria), Malbec (Spain, Czech Republic), Malbech (Italy), Malbeck (Bulgaria) and Malbek (Austria).
Regulations
In France, Cot N if officially listed in the "Catalogue of vine varieties".This variety is likewise listed in the Catalogues of other member states of the European Union: Austria, Bulgaria, Spain, Italy and the Czech Republic.
Use
Wine grape variety
Evolution of area under vines in France
1958 1968 1979 1988 2000 2008 2016
ha 10752 9765 4801 5279 6166 6676 7297
Description
Identification signs include:
- the young shoot tips are densely covered with flat-lying hairs,
- young leaves are green with bronze patches,
- adult leaves are whole or 3-lobed with a U-or V-shaped open petiolar sinus; small teeth, long compared to width at base, straight sides; revolute leaf blade, wavy between the veins near the petiolar point; the leaf underside is sparsely to medium covered with flat-lying hairs,
- round-shaped berries
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 225 239 186 188 246 238 233 239
Allel 2 149 236 262 188 202 260 248 267 251
Phenology
Bud burst: 4 days after Chasselas. Grape maturity: period II, 2 and 1/2 weeks after Chasselas
Suitability for cultivation and agronomic production
This vigorous vine variety is sensitive to coulure, but clonal selection has sharply reduced this defect. Plant vigor should be managed by high density plantations and by using low productive rootstock. This variety is fairly sensitive to winter frosts during the first years after plantation.  Following spring frosts, the volunteers from secondary buds are not very fertile. At maturity, there is sometimes the risk of shattering.
Sensitivity to diseases and pests
Cot N is not particularly sensitive to fungal diseases except perhaps with regard to phomopsis. It is likewise senstive to leaf hoppers.
Technological potential
Clusters and berries are medium-sized. Based on a well-managed production, this early variety can produce quite colorful, aromatic and tannic wines with good capacity for ageing. Good results are obtained for rosé wine making. Generally speaking, sufficient maturity of grapes should be reached to avoid too herbaceous and vegetal aromas of Cot N which sometimes are somewhat hard or bitter.
Clonal selection in France
The sixteen approved Cot N clones carry the numbers 42, 46, 180, 279, 353, 419, 592, 593, 594, 595, 596, 597, 598, 1061, 1127 and 1128. Two conservatories with approximately 220 clones were set up in the Lot in 1993 and in 2003.
Bibliographic references
- Catalogue des variétés et clones de vigne cultivés en France. Collectif, 2007, Ed. IFV, Le Grau-du-Roi.
- Documentation interne du Domaine de Vassal. 1949-2011, INRA, Marseillan-plage.
- Cépages et vignobles de France, tome 2. P. Galet, 1990, Ed. Dehan, Montpellier.
- Ampélographie. P. Viala et V. Vermorel, 1902-1910, Ed. Masson, Paris
Description of clones approved in France
Identity and availability Agronomic data Technical data
Clone number Origin Selection Fertility Production level Sugar content Potential color
Year approved Agronomic references Weight of grape clusters Vigor Total acidity Tannic structure
Growing surface area Size of berries Sensitivity to Botrytis Aromatic intensity Oenological aptitudes
42  Lot  ENTAV  medium  medium  medium  
 1971  Sud-Ouest  medium      
 0.54 ha        distinctive wines of the vine variety
Occasionally slightly irregular clone
46  Lot  ENTAV  high  medium to high  medium to high  
 1971  Sud-Ouest  medium      
 0.96 ha        distinctive wines of the vine variety
180  Gironde  ENTAV  low  medium  medium  medium
 1973  Bordelais, Sud-Ouest  medium    medium  medium
 1.59 ha        distinctive wines of the vine variety
Clone appreciated for its agronomic characteristics.
279  Gironde  ENTAV        
 1973  Gironde        
         Small distribution clone
353  Gironde  ENTAV        
 1975  Gironde        
         Small distribution clone
Identity and availability Agronomic data Technical data
Clone number Origin Selection Fertility Production level Sugar content Potential color
Year approved Agronomic references Weight of grape clusters Vigor Total acidity Tannic structure
Growing surface area Size of berries Sensitivity to Botrytis Aromatic intensity Oenological aptitudes
419  Gironde  ENTAV        
 1976  Gironde        
         Small distribution clone
592  Gironde  INRA        
 1978          
         
Small distribution clone
593  Gironde  INRA        
 1978          
         
Small distribution clone
594  Lot  ENTAV  medium  medium  medium to high  medium to high
 1978  Sud-Ouest  medium      medium
 2.38 ha        distinctive wines of the vine variety
Clone appreciated for its agronomic characteristics and quality of wines produced.
595  Lot  ENTAV  medium  medium  medium to high  medium to high
 1978  Sud-Ouest  medium      medium to high
 4.29 ha        distinctive, refined and harmonious wines
Clone appreciated for its agronomic characteristics and quality of wines produced.
Identity and availability Agronomic data Technical data
Clone number Origin Selection Fertility Production level Sugar content Potential color
Year approved Agronomic references Weight of grape clusters Vigor Total acidity Tannic structure
Growing surface area Size of berries Sensitivity to Botrytis Aromatic intensity Oenological aptitudes
596  Lot  ENTAV  medium  medium  medium to high  medium to high
 1978  Sud-Ouest  medium      medium
 3.19 ha        distinctive wines of the vine variety
Clone appreciated for its agronomic characteristics and quality of wines produced.
597  Gironde  INRA        
 1978          
         
Small distribution clone
598  Lot  ENTAV  medium  medium  medium to high  medium to high
 1978  Sud-Ouest  medium      medium
 4.66 ha        distinctive wines of the vine variety
Clone appreciated for its agronomic characteristics and quality of wines produced.
1061  Gironde  CA 33 - ENTAV  medium  medium  medium to high  medium to high
 2001  Bordelais  low    medium  medium
         structured wines
Clone appreciated for its agronomic characteristics and quality of wines produced.
1127  Lot  CA 46 - IFV  medium  medium  high  high
 2009  Sud-Ouest  low    medium  high
   medium    high  supple, fruity, balanced and colorful wines
Moderate production level. Wines appreciated for their organoleptic characteristics
Identity and availability Agronomic data Technical data
Clone number Origin Selection Fertility Production level Sugar content Potential color
Year approved Agronomic references Weight of grape clusters Vigor Total acidity Tannic structure
Growing surface area Size of berries Sensitivity to Botrytis Aromatic intensity Oenological aptitudes
1128  Lot  CA 46 - IFV  low  low  high  high
 2009  Sud-Ouest  low    medium to low  high
   medium    high  distinctive, structured and colorful wines with a good finish
Moderate production level. Wines appreciated for their organoleptic characteristics