Prunus Krymsk 7 pbr <8mm planting material

Beschrijving

The Prunus domestica 'Krymsk 7' is a semi-vigorous rootstock, ideal for both sweet and sour cherries. Developed by the Krymsk Experimental Plant Breeding Station in Russia, this rootstock offers excellent growth performance in warm climates. Thanks to its rapid growth and precocity, the first harvest is often possible in the 3rd or 4th year, with good fruit sizes and firm fruits.

Key features:
Vigor: The 'Krymsk 7' has a medium vigor, which ranges from 65% to 90% of standard growth, depending on the cherry variety used. This makes it an excellent choice for growers looking for a good balance between growth regulation and productivity.
Soil Adaptation: This rootstock is well adapted to a wide range of soil types and grows well in wet soil conditions, making it suitable for a variety of growing conditions.
Climate adaptation: The 'Krymsk 7' is cold resistant, making it suitable for colder climates.
Productivity and fruit size: The trees on Krymsk 7 produce a harvest of good fruit size and firm cherries already from the third or fourth year. The yield is higher than on Mazzard rootstocks, especially on sweet cherry varieties.
Resistance and diseases:
Resistance: The 'Krymsk 7' shows some resistance to crown knot and has a moderate resistance to root lesion nematodes. The rootstock is also tolerant to Coccomyces and Verticillium, but sensitive to Agrobacterium.
Sucker buds: The rootstock shows a low tendency to root suckers, which ensures stable growth of the trees.
Graft compatibility:
Compatibility: The 'Krymsk 7' has excellent graft compatibility with sweet cherries. The compatibility with sour cherries has not been tested extensively.
Propagation and propagation:
Propagation: The 'Krymsk 7' can easily be propagated by means of softwood cuttings. This makes propagation in the nursery efficient and easy.
Conclusion:
The 'Krymsk 7' rootstock is an excellent choice for commercial cherry production, especially in warmer climates. Its precocity, good fruit size, and high productivity make it a valuable option for growers seeking early and consistent yields. The rootstock is tolerant to a variety of soil conditions and shows good resistance to common diseases.