M9 T337.1

A New Generation Dwarfing Rootstock: M9 T337.1

The registration of the M9 T337.1 rootstock in 2024 opens new horizons for intensive orcharding in Ukraine. Introduced by FOP Matsenko M. O., this rootstock is designed for high-yield apple orchards where tree compactness and early fruiting are critical.

Key Features and Morphology

M9 T337.1 belongs to the dwarfing rootstock category, enabling high-density planting. The plant is characterized by a spreading habit and straight shoot growth. A significant distinguishing feature is its early start of vegetation—buds break earlier than many counterparts, providing a distinct advantage in regions with shorter growing seasons.

• Visual Traits: Shoots exhibit a characteristic reddish-brown color on the sunny side with dense pubescence on the upper half. Large, sharp buds are slightly deflected from the axis, simplifying budding operations.
• Foliage: Long leaf blades with rounded-serrate margins are positioned horizontally. The absence of anthocyanin coloration on the leaf blade and sparse pubescence on the underside make this variety easily identifiable during nursery inspections.

Why Choose This Rootstock?

The primary advantage of M9 T337.1 lies in the balance between vigor and productivity. The low growth vigor of trees on this rootstock minimizes pruning costs and allows the plant to direct maximum nutrients toward fruit development rather than vegetative growth. The rootstock is adapted for cultivation across all key agro-climatic zones of Ukraine: from the Steppe to Polissya.

For orchardists planning intensive plantings, this rootstock serves as a reliable foundation, ensuring predictable tree architecture and high graft success rates. With moderate bark glossiness and a medium number of lenticels, the material performs exceptionally well in nursery conditions.