Agriculture Reference
In-Depth Information
California growers prefer
'Winter Nelis'
seedling rootstocks that have
been developed using 'Bartlett' pollen for pear decline resistance. Unfortu-
nately, these rootstocks are highly susceptible to fire blight and pear root
aphid and are quite susceptible to nematode damage.
'Angers Quince'
and
'Provence Quince'
provide dwarfing and resistance
to pear decline, pear root aphid, and nematodes, but they are quite suscept-
ible to fire blight and are highly susceptible to cold injury.
For very cold climates, seedling
Pyrus ussuriensis
rootstocks probably of-
fer the greatest chance of success, but they are highly susceptible to pear de-
cline, as are
Pyrus serotina
rootstocks.
Pyrus calleryana
rootstocks are very
susceptible to cold injury. 'Old Home' rootstocks are susceptible to root aph-
ids.
Quince
