Vitis berlandieri x Vitis riparia x Vitis cinerea

This hybrid is a complex interspecific rootstock belonging to the Vitaceae family. It is widely recognized in professional viticulture as an essential tool for grafting commercial European grape varieties (Vitis vinifera) to ensure their survival and productivity in challenging environmental conditions, particularly where soil structure is limiting.

The genetic makeup of this rootstock derives from a precise cross between Vitis berlandieri, Vitis riparia, and Vitis cinerea. Originating from research on American grape species, this hybrid was developed to combine the lime-tolerance of V. berlandieri with the rapid vegetative cycle of V. riparia and the vigorous growth habits of V. cinerea.

Botanically, the plant is characterized by a high tolerance for active limestone, preventing lime-induced chlorosis that typically affects vines on calcareous soils. The root system is deep-reaching and aggressive, which provides a strong anchorage for the scion and ensures stable water and nutrient uptake, contributing to consistent annual yields.

Agronomic requirements emphasize the importance of site preparation and proper irrigation management. Although the hybrid is robust, it requires careful soil testing to ensure it is the appropriate choice for the specific vineyard site. It performs best in soils where drainage is well-managed and where the risk of iron chlorosis is high, as it maintains metabolic efficiency under these conditions.

In terms of usage, it is a specialized rootstock designed for high-quality viticulture regions. It is prone to typical vineyard pests and diseases, requiring standard integrated pest management (IPM) practices to maintain vineyard health. Growers prioritize this rootstock for its ability to bridge the gap between difficult soil chemistry and the sensitive requirements of premium wine grape varieties.

• Excellent tolerance to high active lime content in soil.
• Strong physiological compatibility with Vitis vinifera cultivars.
• High vigor aiding the structural development of the vine.
• Balanced nutrient uptake for improved fruit quality.