Rootstock comparison table
| Rootstock | Bud 9 | G.41 | M27 |
|---|---|---|---|
| Summary | Bud.9 induces early fruiting and is compatible with most cultivars, needs well drained soils, grows a dense, heavy flowered tree, and has high yield efficiency. B.9 works well in high density planting. | G.41 is a good rootstock for less vigorous apple varieties, but does need support. In trials in British Columbia, Canada, it had fewer root suckers than M.9. | M.27EMLA is good for containers and small space gardens. It can be grown on a vertical axe system and is very productive, but needs well drained and fertile soils. |
| remove | remove | remove |
Using
| Bud 9 | G.41 | M27 | |
|---|---|---|---|
| Species compatibility | Apple |
Apple |
Apple |
| Vigour % of standard | 25% - 40% | 30% - 40% | 10% - 20% |
Growing
| Bud 9 | G.41 | M27 | |
|---|---|---|---|
| Rootstock size class | Dwarf |
Dwarf |
Very dwarf |
| Precocity | Precocious |
Precocious |
|
| Support required | Permanent support |
Permanent support |
Permanent support |
Climate
| Bud 9 | G.41 | M27 | |
|---|---|---|---|
| Cold-hardiness | Cold-hardy |
Cold-hardy |
Identification
| Bud 9 | G.41 | M27 | |
|---|---|---|---|
| Developer | Michurinsk State Agrarian University |
Cornell University |
East Malling Research Station |
| Country of origin | Russia |
United States |
United Kingdom |
Problems
| Bud 9 | G.41 | M27 | |
|---|---|---|---|
| Woolly aphid | Some susceptibility |
Some resistance |
Some susceptibility |
| Fire blight | Some susceptibility |
Some resistance |
Very susceptible |
| Scab | Some resistance |
||
| Powdery mildew | Some resistance |
Some resistance |
|
| Burr knots | Few |
Few |
Few |
| Crown Gall | Some resistance |
||
| Collar rot | Some resistance |
Some resistance |
|
| Replant complex | Very tolerant |
||
| Root suckers | Some |
Few |
Few |