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The
videos were shot on October 2006 and the trees (10 in
total) were treated with the highest dosage of
imidacloprid 75 WSP in November 2002. They were retreated
(against my wishes- ruins the experiment…) in fall 2005.
I climbed again in June of this year and some branches
have new HWA but they may not mature this fall. In general
though, the trees look pretty good, with tree #10 (in
first video) having the healthiest and fullest crown. No
HWA was observed in that tree in June 2007.
I
plan to return this fall after leaf drop to film and
photograph the grove of ten trees from the ridge across
the creek. This vantage point should really show the
striking difference between the results when you act
QUICKLY versus wait a few years to treat. ALL the other
trees in the videos were treated in 2005. I really hope to
see some recovery this fall or all was wasted, although we
didn’t know that at the time. - Will Blozan August 8,
2007 |
