1995, Top Notch Treecare has used fungicides with the active
ingredient of propiconazole (brand names Alamo and Quali-Pro
Propiconazole) for Dutch Elm disease prevention. Products with
propiconazole had previously been used with great success in
the treatment of oak wilt, a vascular wilt disease very similar
to Dutch Elm disease. The chemical standard in the 1990’s
was Arbotect, which had a good record of success but was found
to be very damaging at the injection site due to acidity (the
Ph is 2.7 in a 1% suspension in water). For a process that needs
to be repeated every 2-3 years, a less damaging injection process
was desired, so Top Notch decided to try using propiconazole
in its elm treatments. For
12 years, Top Notch has used propiconazole with excellent results
while doing less damage at the injection site.
is our firm belief that the chemical alone does not make an
elm treatment effective, and the application method is just
as important for success. Every year we analyze our failures
and our chemical choice, and we remain committed in our belief
that we are using the best chemical for Dutch Elm disease prevention.
The results speak for themselves – our program is second
more information on this topic, read
an artical published in the Tree Care Industry Association Magazine,
written by Jay Gough, Top Notch Treecare's Plant Health Care
see the plain text version.