(B
118)
A vigorous, semi-dwarf rootstock that produces trees roughly the
same size as those grown on EMLA 111 roots. B 118 is from the same
Russian program that created Budagovsky 9
(B 9). It is extremely cold hardy, well anchored, and works with
most soils.
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EMLA 111 produces a tree about two-thirds the size of a standard
tree. Vigorous scion varieties and better soils may grow to three-quarter
size or larger. EMLA 111 is a good producing rootstock, is well
anchored and tolerant of drought conditions. It is widely adapted
to most soil conditions.
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This rootstock produces a tree about half to two-thirds the size
of a standard tree. It does not sucker and the rootstock is resistant
to wooly aphid. EMLA 106 has been planted intensively in the East
and West and is an excellent producer. It should be planted on well
drained soil as it is susceptible to crown rot.
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A tree on this rootstock will be 50 to 60 percent smaller than a
standard tree. Trees on this clone are the most popular of all the
rootstock we grow. EMLA 7 does well on most soils. Some support
may be needed in early years. EMLA 7 is very winter hardy. It is
susceptible to suckering. EMLA 7 is extremely tolerant to fire blight.
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(G
30)
This rootstock was developed at the Cornell University breeding
program by Dr. Jim Cummings. It makes a tree similar in size to
EMLA 7. It is more fireblight resistant than EMLA 7 and produces
trees that are more precocious than trees grown on EMLA 7. Recommended
for trial planting at this time.
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EMLA 26 is considered to be smaller than a half size tree. It is
about 40 to 45 percent of a standard tree, needs some support in
early years, but could be self-supporting in later years. EMLA 26
is very early and heavy bearing. This rootstock is very adaptable
for close plantings and double rows.
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A cross of M 9 x M 4, Supporter 4™ is a dwarfing apple rootstock similar in vigor to EMLA 26. Anchorage is similar to EMLA 26, and trees on this root should be grown with some sort of support structure. The rootstock is relatively frost resistant. In tests, Supporter 4™ showed better efficiency than both EMLA 26 and EMLA 106.
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A cross of M 26 x Robusta 5 hybrid, G 11 is similar in vigor to EMLA 26. Like ELMA 26 trees grown on G 11 should be supported. Trees of this variety are extremely precocious, productive and more resistant to wooly aphid tan EMLA 26. G 11 is also somewhat resistant to fireblight and collar rot. G 11 also resists suckering.
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Nic 29® is a Malling 9 type rootstock. It usually exhibits a better root system than Malling 9. Of the various types of Malling 9, Nic 29® exhibits stronger vigor, yet is still a full dwarf. Trees grown on this root require support. The rootstock is both precocious and productive, usually fruiting in second or third leaf. Fire blight susceptibility is similar to other M 9 strains. Recommended for high density plantings.
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(B
9)
A cross between M 8 and Red Standard, a hardy rootstock of Russian
origin. A full dwarf rootstock producing a tree with the same vigor
as M 9. Requires staking or other support to keep anchored. Extremely
cold hardy and resistant to collar rot. Mildly resistant to powdery
mildew and scab, developed at the Michuinsk College of Agriculture
in Russia.
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(M
9)
This is considered to be the full dwarf tree. M 9 should be planted
on fertile well-drained soil and requires support. A tree on this
root is about 30-35 percent in size compared to a standard tree.
In our own orchards, we have had very early and heavy production
from M 9 rooted trees. M 9 may not be as winter hardy as those on
other dwarfing roots. It can be planted close in double rows.
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