APPLE ROOTSTOCKS
Malling 26

SIZE CLASS 4

M.26



Pedigree

M.16 x M.9, 1929

 

Precocity

Precocious, slightly less than M.9

Productivity

High

Scion Fruit Size

Good
Scion Fruit Quality Generally fine, good coloring

Anchorage

Good, support recommended at least for early growth

Fire blight

Extremely susceptible

Crown & Root Rots

Variably susceptible (conflicting reports)

Woolly Apple Aphid

Susceptible

Powdery Mildew

Moderately resistant

Hardiness (Midwinter)

Most hardy of Malling series rootstocks
Bud Break Quite late
Leaf Fall  

Suckering

Light

Burrknots

Moderate to heavy

Stoolbed Performance

Excellent

Virus hypersensitivities

Tomato Ringspot Virus

Experience

Well tested, M.26 is one of the most widely planted rootstocks in the USA.

Sources

Most commercial sources

Strains

EMLA - virus free clone. Some "smooth" subclones exist that exhibit less size control.

Observations, suspicions, history

Partial incompatibility with some cultivars, including Blaxtayman and Holiday, may occur. Somewhat drought susceptible, but also sensitive to Phytophthora spp. induced root rots, so irrigation and good drainage are essential. M.26 is a good choice for high density plantings in poorer soils and/or for less vigorous scion varieties in areas where fire blight can be managed. M.26 is a risky choice for use with fire blight susceptible scion cultivars in any region. In some locations M.26 produces a smaller tree than M.9.

 

 

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Last modified September 21, 1999.