Rootstocks
Rootstock Details by Crown Gall : Resistant or tolerant
GF 655/2
Other Names
St. Julien 655/2
Species
Prunus insititia
Origin
Vigor
Dwarfing
Vigor Explanation
Waterlogging Tolerance
Good
Waterlogging Explanation
Calcareous Soil Tolerance
Good
Compatibility with Peach and Nectarine
Good
Compatibility with Plum
Unknown
Suckering
Lots
Explanations for calcareous soil tolerance - compatiblities - suckering
Drought Tolerance
Poor
Anchorage
Good
Precocity
Unknown
Fruit Ripening
Unknown
Flower Timing
Unknown
Flower Density
Unknown
Cold Hardiness
Unknown
Rootknot Nematode
Unknown
Lesion Nematode
Unknown
Ring Nematode
Unknown
Nematode Explanations
Bacterial Canker
Unknown
Phytophthora
Partly resistant
Armillaria
Unknown
Crown Gall
Resistant or tolerant
Disease Explanations
Other Diseases
Availability from Nurseries
Propagation Methods
Propagated by layering, hardwood cuttings and micropropagation
Summary Comments
Performed OK in the 1984 NC-140 trial but fruit size was always small and there was lots of suckering (but not nearly as much as Damas 1869).
References
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Mr.S. 2/5
Other Names
Species
Not certain - could be Prunus cerasifera x Prunus spinosa or Prunus domestica x Prunus spinosa
Origin
Pisa, Italy
Vigor
Semidwarf
Vigor Explanation
Waterlogging Tolerance
Good
Waterlogging Explanation
Calcareous Soil Tolerance
Good
Compatibility with Peach and Nectarine
Good
Compatibility with Plum
Unknown
Suckering
Some
Explanations for calcareous soil tolerance - compatiblities - suckering
Drought Tolerance
Unknown
Anchorage
Good
Precocity
Precocious
Fruit Ripening
Advanced
Flower Timing
Unknown
Flower Density
Unknown
Cold Hardiness
No
Rootknot Nematode
Resistant or tolerant
Lesion Nematode
Susceptible
Ring Nematode
Susceptible
Nematode Explanations
Bacterial Canker
Resistant or tolerant
Phytophthora
Partly resistant
Armillaria
Partly resistant
Crown Gall
Resistant or tolerant
Disease Explanations
Several scientific studies show this rootstock to be resistant to some diseases such as bacterial canker and crown gall. However, in the California 2002 NC-140 trial, several trees died suddenly in the middle of the season, probably from a disease.
Other Diseases
Availability from Nurseries
Propagation Methods
Easy to propagate by layering, hardwood cuttings and micropropagation
Summary Comments
In Europe, it is reported to tolerate calcareous soils, waterlogging and several soil pests and diseases. However, it was not very impressive in the 2002 NC-140 trial - 3 of the 8 trees died suddenly in one year and suckering was a little excessive.
References
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