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APPLE ROOTSTOCKS
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SIZE CLASS 2 |
Bud.491 (B.491) | |||
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Pedigree |
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Precocity |
Similar to M.27 | |||
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Productivity |
Rated as medium to excellent for the size class | |||
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Scion Fruit Size |
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| Scion Fruit Quality | Good coloring in one trial, may transfer more Calcium to leaves and fruits than other genotypes | |||
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Anchorage |
Requires strong support | |||
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Fire blight |
Susceptible, further testing required | |||
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Crown & Root Rots |
Susceptible, further testing required | |||
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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 | |||
| Bud Break | ||||
| Leaf Fall | ||||
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Suckering |
Light | |||
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Burrknots |
Light | |||
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Stoolbed Performance |
Excellent in Hungarian trials | |||
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Virus hypersensitivities |
Requires testing | |||
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Experience |
B.491 has been planted in North America recently on a very limited scale. Trial data from Europe is scarce. | |||
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Sources |
Treco | |||
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Strains |
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Observations, suspicions, history |
Bud.491 may become a competitor to M.9 and M.27 in the future. There remain many questions about the likely future of this rootstock in North America. Bud.491 should be planted on a limited scale for on-farm testing by growers when planting M.27. Bud.491 may be appropriate for use in high density plantings on fertile soils with vigorous scion varieties, particularly in areas where M.27 has insufficient winter hardiness. Possible improvements in fruit quality due to higher Calcium loading of fruits should be explored more fully. |
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Return to Last modified September 21, 1999. |
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