Rootstock GRAVESAK

Gravesak is a grape rootstock created for resistance to phylloxera and chlorosis. Bushes are of medium height with a strong root system, growing well on sandy, loamy-sandy, and gravelly soils, as well as in acidic environments. The variety tolerates up to 20% active lime and up to 6% total limestone, making it suitable for calcareous soils.

The strengths of Gravesak include high resistance to the root form of phylloxera and moderate resistance to the leaf form. It also demonstrates good frost hardiness (tolerance down to -26°C) and moderate drought resistance, while growth vigor ranges from moderate on dry soils to strong with sufficient water supply. The variety grafts easily and roots from cuttings, making it convenient for winemaking practice.

Gravesak possesses technological characteristics: average shoot length of about 2 m, diameter 7–8 mm, internodes 12–13 cm. Maturation of the vine is 80–85% by the end of the growing season, and suckering is moderate. Due to its resistance and good adaptation to different soil conditions, Gravesak is often used as a rootstock to improve growth and yield of grape varieties.