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APPLE ROOTSTOCKS
Geneva 30
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SIZE CLASS 5-6
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G.30
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Pedigree
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Robusta 5 x M.9, 1974 |
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Precocity
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Very precocious, similar to M.26 |
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Productivity
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High in NC-140 and Grower trials |
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Scion Fruit Size
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Fruit size has been adequate |
| Scion Fruit Quality |
No problems noted |
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Anchorage
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Poor, support required |
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Fire blight
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Highly resistant |
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Crown & Root Rots
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Screened, but not yet confirmed to be resistant |
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Woolly Apple Aphid
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Susceptible |
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Powdery Mildew
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Hardiness (Midwinter)
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Currently testing, probably good |
| Bud Break |
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| Leaf Fall |
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Suckering
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Moderate, less than M.7 |
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Burrknots
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Rare |
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Stoolbed Performance
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Very difficult - requires extensive hand labor |
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Virus hypersensitivities
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Experience
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Limited |
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Sources
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Treco, Meadow Lake |
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Strains
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None |
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Observations, suspicions, history
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G.30 is a very highly productive semi-dwarfing
rootstock with excellent fire blight resistance. However, it has brittle
wood and requires strong trellis support. Not recommended for use with Gala
scion cultivar due to weak graft unions. |
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Return to
Geneva Apple Rootstocks Page
North American
Apple Rootstock Cultivars Page
Last modified August 24, 1999.
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