Volume 29 Number 3 Article 7 Pages: 66-67
Year 1975 Month 7
Title: A New Program at the Harrow Research Station to Develop Dwarfing Pear Rootstocks
Author: H. Quamme
New and improved rootstocks are
needed for Canadian pear orchards.
'Bartlett' seedlings are mainly used for
rootstock purposes now because of
their availability and ease of propagation.
In general, they produce trees
which are adapted to a wide range
of soils, are resistant to low soil temperatures
and are resistant to pear
The major disadvantage of
Bartlett seedling rootstocks is that
they produce vigorous trees which are
late to come into fruiting.
rootstocks which control tree size and
induce early fruiting are not commonly
grown in Canadian orchards
because they are susceptible to winter
injury and they are incompatible
with many scion varieties.
The aim of the Harrow pear rootstock
program is to develop rootstocks
which induce early bearing, control
size, are compatible with the main
scion cultivars and are hardy enough
to withstand our winters.
will be placed on the development of
dwarfing Pyrus rootstocks because
they are potentially more cold resistant
and lack the incompatibility of
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