Krymsk® 7
(cv. Elta) USPP#16,353
Krymsk® 7 is a unique rootstock for sweet cherry, showing similar precocity and vigor to Mahaleb. Cherry trees on Krymsk® 7 tolerate high temperatures. Compared with Mahaleb, Krymsk® 7 is more tolerant of soil moisture extremes. Krymsk® 7 is well suited to varieties needing improved precocity over Colt and Mazzard. Fruit maturity may be advanced by 1 to 3 days relative to Mazzard.
Krymsk® 7 is not sensitive to the pollen spread ILAR viruses . It is cold hardy and stress tolerant. Krymsk® 7 is adapted to a wide range of soil and growing conditions.
Sweet cherries–2005 in California
Sweet cherries. Sour cherry compatibility unknown
90% of Mazzard seedling. Equivelent to Mahaleb.
Excellent.
Good.
More precocious than Mazzard and Colt. Slightly more precocious than Mahaleb.
Good with sweet cherry. Similar or better fruit size than Mahaleb.
Fruit may ripen 1-3 days ahead of Mazzard, similar to Mahaleb.
Produces very few trunk and root suckers.
High, similar to Mazzard.
Excellent for all but the coldest growing sites in the US.
Unknown. No problems have been encountered.
Untested.
No problems reported.
Unknown.
Not sensitive to ILAR virus.
Good – much better than Mahaleb.
More tolerant than Gisela® rootstocks, to low soil moisture and high temperature stress.
Level of susceptibility is unknown, but not extreme.
Unknown.
Unknown.
