Tzu Ma Li = PI 542007 (1157.002) - Pyrus ussuriensis Maxim. Resists crown gall, bacterial canker and some nematodes. Seed - best sown in a cold frame as soon as it is ripe in the autumn, it will then usually germinate in mid to late winter. Full sized tree, 40-50′. Temperatures over 15 - 20°c induce a secondary dormancy in the seed[200]. Must stake. This species is a parent of the cultivated Asian pears[200]. x, EMLA 111 (M111) semi-standard produces tree about 18 to 20 feet tall here in the northeast, shorter in some warmer growing zones. support is recommended. Support is recommended.x. This QR Code is unique to this page. var s = '' - Virus Biological Assays - Negative: NP-1989 PV-1989 - Traits: DIPLOID (flow cytometry 2012) Uzhi Li = PI 654958 (2784.001) - Pyrus ussuriensis Maxim. If you have important information about this plant that may help other users please add a comment or link below. Size and quality varies tremendously from tree to tree. Pyrus ussuriensis is the hardiest of the pears. Recommended spacing of 14 feet. Please donate to support our ‘Plants to Save the Planet’ Project. Dwarfing to about 35-45% of standard. We are currently updating this section. IUCN Red List of Threatened Plants Status : Growth: S = slow M = medium F = fast. Pyrus Old Home x Farmingdale (OHxF) are pear rootstocks selected from seedlings grown in Illinois for their vigor, precocity, disease resistance and cold hardiness. Compatible with most cultivars and resistant to Tomato Ringspot virus. For more information about QR Codes click here. x, Geneva 935 (G935) Resistant to collar rot and fire blight. QR Codes are barcodes that can be read by mobile phone (smartphone) cameras. Proven to be more productive then Bartlett rootstock. Geneva 30 (G30) grows to 45-50% of standard. Used on European pears, it makes a huge tree of 30′ or more. Resistant to rootknot nematodes and oak root fungus. The largest tree in North Dakota is 29 feet tall with a canopy spread of 24 feet. This is basically a pear seedling and hence is the equivalent of growing a pear tree on its own roots. We are adding search terms and icons to those plants pages, and providing a range of search options aligned to categories of plants and crop yields, with Help facilities including videos. Edible Shrubs provides detailed information, attractively presented, on over 70 shrub species. Pears seems to do better on Hawthorne than on Pyrus ussuriensis, recommended around here for hardiness. We will not sell or share your email address. * Updates on new information & functionality of the website & database Works best on light, sandy soils. Tests & Trials: Tests and trials for 'Paul' were conducted during the 2008 to 2010 growing seasons at Saskatoon Farm, Dewinton, Alberta. Antonovka, the standard rootstock, provides a good option for those in the coldest of winter areas or to grow a long-lived, large tree. Seedling rootstock/Lovell Dependable, standard rootstock. All plant pages have their own unique code. Resistant to fire blight. Very promising for high density plantings. Pyrus communis. A very frost resistant tree[74], tolerating temperatures down to below -15°[200], it is a possible rootstock for northern areas[74]. 2: 60. Krymsk 5  is a semi-dwarf rootstock that is tolerant of heavy, clay soils. http://commons.wikimedia.org/wiki/User:Sten. Resistance to bacterial canker is showing as good. Dwarfing to 30-35% of standard. For a list of references used on this page please go here. Tolerates light shade but does not fruit so well in such a position. Pyrus ussuriensis rootstocks are also suit able and are . Should be planted in permanent location within the first few years due to deep anchorage trait. (we are going away from the Gisela series for the support and bacterial canker issues). The Pyrus "rootstock" is used for producing large specimen pear trees. ‘Bud’ (B) series, short for Budagovsky, introduced from Byelorussian Experiment station, Michurinsk, Russia. Mazzard from a wild cherry seedling, best suited for trees planted on heavier soiils. Right plant wrong place.