| Characteristic | Detail | Description |
|---|---|---|
| Rootstock | G.935 |
G.935 is a 1976 cross of Ottawa 3 and Robusta 5. Size is reported to be slightly larger than M.26, but the rootstock has resistance to fire blight and crown rot. It is not resistant to woolly apple aphid. Production efficiency is rated equal to M.9. In the Golden Delicious trial at Rock Springs in 2006, tree size was about 9 percent larger than M.9 and 12 percent smaller than M.26. Production efficiency was not |
| Characteristic | Detail | Description |
|---|---|---|
| Rootstock | B.10 |
Formerly Bud. 62-396. It is a release from the Michurinsk University of Agriculture (Russia) breeding program, which is trying to select for improved winter hardiness. A 10-year trial in Pennsylvania with Golden Delicious as the scion cultivar showed that trees on this rootstock were similar in size to trees on G.935 and M.9 T337 (15 percent smaller). Main scaffold branch angle was close to 90 degrees. Production efficiency and total yield were slightly better than |
Dwarfing rootstocks typically produce trees that are about 25% to 60% of the size of trees on seedling rootstocks, with a mature height of about 6 feet to 12 feet. Depending on the soil, scion cultivar, and training system, trees on dwarf rootstocks can be spaced at 20 feet x 14 feet (173 trees per acre ) to 14 feet x 4 feet (778 trees per acre). Some of the more progressive apple growers, in regions with less vigorous growing …
Click on a rootstock to access characteristics and descriptions.
| Dwarfing Rootstocks | Semi-Dwarfing Rootstocks | Standard Size Rootstocks |
|---|---|---|
| B.9 | B.118 | Antonovka 313 |
| G.16 | B.490 | MM.111 EMLA |
| B.10 | G.202 | P.18 |
| G.214 | G.11 | Seedling |
| G.41 | G.210 | |
| G.65 | G.30 | |
| G.935 | G.890 | |
| M.27 | G.969 | |
| M.9 | J-TE-H | |
| Mark | M.4 | |
| Ottawa 3 | M.27, M.9 (interstem)/ MM.106 rootstock |
|
| P.2 | M.27,M.9(interstem)/ MM.111 rootstock |
|
| P.22 | M.26 | |
| Supporter 1 | M.7 EMLA | |
| Supporter 4 | MM.106 EMLA | |
| V.3 | V.1 |
Many apple rootstocks are being evaluated for potential use in the United States by the NC-140 Multi-State Research Committee. These rootstocks have come from breeding programs in the United States (CG, G), Great Britain (M), Germany (PiAu and Supporter), Poland (P), Czech Republic (J-TE), Japan (JM), and Russia (B). Specific rootstocks that are currently under evaluation in NC-140 plantings include the following: B.9, B.10, B.7-3-150, B.7-20-21, B.67-5-32, B.64-194, B.70-6-8, B.70-20-20, B.71-7-22, G.11, G.16, G.41, G.202, G.935, CG.2034, CG.3001, CG.4003, …
