Grolleau Field 1 Grolleau Field 2

Grolleau is a medium ripening black wine grape from France. It has a long growing season with medium yield potential. Vitis vinifera, the selected clone for data analysis was Grolleau ex Vassal, France. The prime name of this variety is Grolleau Noir. This variety is losing favour and slowly being replaced as it makes a thin acid wine.

Variety: Grolleau
Colour: Black
Seeded: Yes
Bud Burst Days (July 1=0): Medium 73.00
Flowering Days (July 1=0): Late 120.00
Veraison Rating: Medium 186.00
Harvest 22 Brix Days (July 1=0): Medium 260.00
Seasonality (days): Long 203.00
Leaf Area Index (m2/m2): 2.03
Bunches Per Shoot: 1.80
Yield Potential: Medium
Berry Weight (g): 1.53
Total Soluble Solids (° Brix): 21.60
pH: 4.14
Titratable Acidity (g/L): Low 3.13
Tartaric Acid (g/L): 5.75
Malic Acid (g/L): 2.00
Tartrate Malate Acid Ratio: High 2.88
Anthocyanins (mg/g): Low 0.50
Phenolics (au): 1.03
Yeast Assimilable Nitrogen (mg/)L: 291
Potassium (mg/)L: 1,290.00