GM 318-57 is a early ripening white wine grape from Germany. It has a short growing season with high yield potential. Bred at Geisenheim from a Vitis vinifera cross the selected clone for data analysis was GM 318-57 IC86.8505. The prime name of this variety is Geisenheim 318-57. In Germany this selection has shown some disease resistance.
Bud Burst Days (July 1=0): Medium 73.00
Flowering Days (July 1=0): Late 114.00
Veraison Rating: Early 179.00
Harvest 22 Brix Days (July 1=0): Early 215.00
Seasonality (days): Short 143.00
Leaf Area Index (m2/m2): 2.86
Bunches Per Shoot: 1.80
Yield Potential: High
Berry Weight (g): 1.65
Total Soluble Solids (° Brix): 20.70
Titratable Acidity (g/L): High 5.33
Tartaric Acid (g/L): 5.48
Malic Acid (g/L): 2.83
Tartrate Malate Acid Ratio: Medium 1.94
Anthocyanins (mg/g): Unknown .
Phenolics (au): .
Yeast Assimilable Nitrogen (mg/)L: 283
Potassium (mg/)L: 1,290.00