[NAFEX] AACK! Persimmon borers(?!)

Richard O'Barr topgun at otelco.net
Wed May 2 22:14:40 EDT 2007


They are Asian Powderpost  or shothole borers. I have them here. I think
they were introduced by importing cane stakes from ther orient which came
with the ones we ordered in LA>
Mike Hall at LSU can comment further. We observed them on still growing
pecan trees though stressed.
Topgun
Zone 7
No. AL
----- Original Message -----
From: "Lucky Pittman" <lucky.pittman at murraystate.edu>
To: "North American Fruit Explorers" <nafex at lists.ibiblio.org>
Sent: Wednesday, May 02, 2007 4:22 PM
Subject: Re: [NAFEX] AACK! Persimmon borers(?!)


> At 04:44 PM 5/2/2007, Hal wrote:
> >Do these "frass tubes" look like white-ish extrusions, about the diameter
of
> >a toothpick, that stick out from the bark up to about an inch long? Just
> >curious, as I am seeing these types of thin cylinders all over several of
my
> >freeze damaged plants. The thin cylinders are light and soft, and
> >disintegrate to an ash-like consistency when touched. My fig trees are
> >covered with them, and there are a few on the kiwi trunks as well. I had
> >assumed they were some sort of extruded material in response to freeze
> >injury, since most do not seem to be coming from any obvious holes in the
> >bark.
>
> That's a perfect description of them -  I've not seen them on
> anything other than the persimmons, but I've not really looked, either.
>
> While on my regular lunch hour stroll yesterday, I detoured through
> the courtyard of the community college campus across the street from
> my office to see what, if any, damage the sizeable trifoliate orange
> tree sustained - it looks BAD!  most of the branches/twigs are
> yellow, with extensive splitting.  Most leaves are wilted/yellow,
> though there are occasional clumps of healthy green leaves here and
> there - mostly underneath an overhanging second story.
>
> LLP
>
>
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