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APPLE ROOTSTOCKS
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SIZE CLASS 3 |
Bud.9 (B.9) | |||
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Pedigree |
M.8 X Red Standard |
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Precocity |
Similar to M.9 | |||
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Productivity |
Similar to M.9 | |||
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Scion Fruit Size |
Good, similar to M.9 | |||
| Scion Fruit Quality | Good, similar to M.9 | |||
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Anchorage |
Poor, requires support like M.9 | |||
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Fire blight |
Not adequately tested, but it may be more tolerant to field infections of fire blight than M.9 | |||
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Crown & Root Rots |
Claimed to be resistant, more resistant than M.9 in some trials. | |||
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Woolly Apple Aphid |
Susceptible | |||
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Powdery Mildew |
Susceptible | |||
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Hardiness (Midwinter) |
Reportedly extremely winter hardy, but some reports say M.26 is more hardy (perhaps particularly for late winter cold snaps). | |||
| Bud Break | ||||
| Leaf Fall | ||||
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Suckering |
Moderate | |||
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Burrknots |
Light | |||
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Stoolbed Performance |
Good, not as productive as M.9 in the stoolbed | |||
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Virus hypersensitivities |
Susceptible to Tomato Ringspot Virus | |||
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Experience |
B.9 has been widely planted in North America recently. | |||
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Sources |
Most commercial apple nurseries supply B.9. | |||
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Strains |
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Observations, suspicions, history |
Bud.9 is probably a good choice for use in high density plantings, especially in areas where extremely low midwinter temperatures are possible. The late fall and early spring hardiness of Bud.9 has not been sufficiently tested. In some trials B.9 has shown better resistance to the rootstock phase of fire blight than M.9, in other trials they have had similar reactions. B.9 is a strong competitor to M.9, and appears to be gaining in popularity in North America. |
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Return to Last modified September 21, 1999. |
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