Rootstock comparison table
| Rootstock | M4 |
|---|---|
| Summary | In an Indian rootstock trial, trees on ‘M.4’, ‘MM.106’ and ‘MM.111’ were all about the same size. It is cold tolerant and has been used as an understock for interstem trees in cold climates. |
| remove |
Using
| M4 | |
|---|---|
| Species compatibility | Apple |
| Vigour % of standard | 75% - 90% |
Growing
| M4 | |
|---|---|
| Rootstock size class | Vigorous |
| Precocity | Precocious |
| Support required | Temporary support |
Climate
| M4 |
|---|
Identification
| M4 | |
|---|---|
| Developer | East Malling Research Station |
Problems
| M4 | |
|---|---|
| Phytophthora | Some resistance |
| Fire blight | Some resistance |
| Burr knots | Few |
| Collar rot | Very resistant |
| Root suckers | Many |
| Tomato Ringspot Virus | Some resistance |