Apple rootstocks

M 27

This rootstock from East Malling grows much weaker than M 9 and is only suitable for fast-growing, large-fruity varieties in the best locations. It promotes fertility, but less fertility growth and is not stable.

M 9

It stimulates early and regular yields, as well as fruit quality in terms of size, colour and ingredients. It places high ecological demands, especially on moisture and aeration of the soil. Since it is not stable, it needs permanent support. Two selections from France are PAJAM 1® lancep and PAJAM 2® cepiland. The most important M9 clone is ´M T337´ from Holland. These rootstocks are free of all known viruses and mycoplasma diseases. They give the plant a little more growth and yield than conventional M 9's. They are more compatible with the grafted varieties and promote their smooth skin.

G.11 u. G.41

2 new interesting apple rootstocks for commercial fruit growing are G.11 and G.41 from the Cornell Center in Geneva, USA. These pads are fire blight, phytophtora and aphid resistant. G.41 has a very high, G.11 a medium replication tolerance. G.11 brings equal or better fruit size than ´ T337´ with the same growth strength, G.41 grows slightly stronger.

Both rootstocks have the disadvantage that they are less well rooted in the nursery, do not grow so straight, break more easily and therefore have to be cut earlier and tied more intensively. A poorer yield in the nursery and the obligation to obtain a licence make it significantly more expensive. G.41 does not have such a good affinity with all varieties either.

__Used purposefully, the advantages of these two rootstocks can make up for the higher price by far. Especially when you consider that these have to be carried for the entire life of the orchard. Due to the Phytophthora cactorum tolerance, these Geneva rootstocks can be especially recommended for phytophtora-sensitive varieties such as Topaz (you can spare the intermediate grafting) or for replication.

M 26

grows weak to medium strong, stronger than M 9 and is therefore well suited for slow-growing varieties. It is more frost-hardy than M 9, provides good fruit quality and is not stable.

MM 106

ensures early and yearly uniform fruit growth; it is moderately strong and enhances fruit quality.

A 2

This ecologically very adaptable rootstock grows strongly and is particularly suitable for slightly dry soils. It causes a yearly fluctuating and not as late ripening as the seedling. It is stable, has a high frost resistance and causes an early termination of the main growth period and leaf fall.