FreeLists / bristol-birds / [Bristol-Birds] Other HWAs in Sullivan County

["Jack Litz" <wjlitz@xxxxxxxxxxxxx>]

I found one wooly adelgid on a large hemlock in my yard Sunday evening.  I took 
it to the County Extension Agent for confirmation Monday morning.  He opened 
the vial and it immediately flew out, but was recaptured on the carpet.

I am investigating application of the insecticide "Merit" into soak holes 
properly spaced out to the drip line.

Anyone have experience with with such a treatment?

Although only one HWA was found,  I have noticed a number of small lichen 
patches recently forming on the smaller branches of the tree and also on the 
smaller branches of a large Norway Spruce.  "Spruce" is reported to be an 
alternate host for the Hemlock Wooly Adelgid 
(http://www.ces.ncsu.edu/depts/ent/notes/O&T/trees/note119/note119.html).  I 
will investigate whether these lichens are the result of a infestation that is 
further along than first appears.  Lichen patches were obvious on the twigs and 
small branches of some heavily infested hemlocks at the Highlands Biological 
Station earlier this summer.

Jack Litz
Fordtown - Sullivan County - Tennessee