| Characteristic | Detail | Description |
|---|---|---|
| Rootstock | P.18 |
Resulted from a cross of M.4 x Common Antonovka and released by the Research Institute of Poland in Skierniewice, Poland. This is a nondwarfing rootstock with vigor similar to seedling. It has not been tested widely in North America, but based on a trial in Illinois P.18 was less precocious and had lower yield efficiency than MM.111. Inoculation tests in California indicate it is moderately resistant to phytophthora. It is susceptible to wooly apple aphid, moderately susceptible to fire blight, produces few root suckers and burr knots, and does not need tree support. |
| Synonyms | Polish 18 | |
| Origin | M.4 X Common Antonovka | |
| Availability | Widely available | |
| Tree Size | 100% | |
| Precocity | Late | |
| Winter Hardiness | Hardy | |
| Suckering | Very little | |
| Tree Support Needed | No | |
| Where tested within NC-140 or other research plantings | AR, BC, CA, CO, IA, IL, IN, MA, MI, MN, NC, NY, OH, OR, PA, UT, VA, WA, WI |
| P.18 Tree | P.18 Blossom | P.18 Flower Cluster |
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Images used by permission. Originally published on http://www.collectionscanada.gc.ca/webarchives/20060114032859/http://res… |
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| P.18 Fruit | P.18 Tree with Fruit |
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Images used by permission. Originally published on http://www.collectionscanada.gc.ca/webarchives/index-e.html |
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