(click on image to enlarge)
Fireblight is a
bacterial disease that can severely attack apples
pear trees, as well as many other species in the Rosaceae family.
Symptoms of Fireblight
Dead leaves remain on
Brown or black twigs
that appear burned
Young twigs dying
from the terminals
There are a few things
that can help slow the spread of Fireblight:
varieties of apples, crabapples, and pears.
Prune infected twigs
and stems while the trees are dormant.
over-fertilization (especially with Nitrogen.)
New, succulent growth encouraged by fertilization is
more susceptible to Fireblight. Any
fertilization done should be in early spring or late
with antibiotics or copper can be done. The first
should be done as soon as the tree begins to
bloom. This should be followed by two more
treatments, with approximately 10 days between each
photo provided by www.ppdl.purdue.edu