Krymsk® 1 rootstock is an interesting tree fruit rootstock providing vigor control and improved fruit size. Additionally, Krymsk® 1 appears suited to areas requiring cold hardiness.

Krymsk®1 is competitive with traditional rootstocks such as Lovell as a rootstock for either European Plums or Japanese Plums.

Early information has demonstrated good yield efficiencies and some enhanced fruit size. While not appropriate for high bacterial canker sites, Krymsk®1 performs relatively well under Root-knot and Lesion nematode pressure.

Some trials with peaches and nectarines have reported 50 to 60 % the vigor of peach seedling with enhanced fruit size. Other trials have reported numerous incompatibilities with peach and nectarine.

Krymsk®1 rootstock also appears interesting for trialing with Apricot. Yield efficiencies and fruit size are similar to standard rootstocks for Apricot. Tree vigor is 50 to 70% of standard rootstocks. Compatibilities with all fruit should be checked, especially with Peaches and Nectarines.

There are currently no known incompatibilities with Plum. Tree spacing should account for the vigor of this rootstock in the grower’s local conditions.