Hi Bob,
The problem is I don't know of any insecticides that are labeled for crown
borer other than RU insecticides. I think Lorsban was labeled at one time,
but it's RU. Stephen's suggestion is a good one except we have neighbors
that have brambles so I'm going to have to live with borer presence. It's
not been really that bad yet, I've lost more canes to Rednecked cane borer (cut
them out that is). My thinking right now to attack this
problem is to start pulling on canes in the spring, sometimes a weak cane
will break where the borer is and you can get him that way.
Thanks,
Mark
----- Original Message -----
From:
Bob Sorenson
Sent: Wednesday, January 23, 2008 3:34
PM
Subject: Re: [NAFEX] raspberry crown
borer
Hi Mark,
No answers from Nafex... I have read about
the critters and it looks like the only way to get rid of them is to drench
the crowns with insecticide. I don't really want to do that and so will dig
all the roots up early in the spring and do an insecticidal soak in some
buckets before transplanting them to a new place.
If you can remember
in the fall, I'll know for sure if it worked.
bob
-----
Original Message -----
From:
Mark Angermayer
Cc:
Date:
Tuesday, January 22 2008 09:40 AM
Subject:
Re: [NAFEX] raspberry crown borer
Hi Bob,
I'd also be interested in the answer, as I had some of it last summer
too. My guess is they're probably pretty well protected from freezing temps
below ground. If you find an effective method to kill, maim, or disembody
them, please let me know.
Mark
KS
-----
Original Message -----
From:
Bob Sorenson
Sent:
Monday, January 21, 2008 10:32 PM
Subject:
[NAFEX] raspberry crown borer
Last year I had a pretty bad infestation of RCB. I have
tried to find out what the cold tolerance of these critters is but have
failed to find any info.
Does anyone know if the larvae freeze out
and at what temperature?
Quite cold here at 6,000 ft in
Utah. Bob Sorenson
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