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Subject:
Re: mite loads
From:
Peter Borst <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Wed, 11 Sep 2002 12:56:55 -0400
Content-Type:
text/plain
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text/plain (10 lines) 
At 09:15 AM 9/11/02 -0500, you wrote:
>We had been treating religiously twice a year since 1995, at first with
>Apistan until it lost its effectiveness here two years ago, and with
>Coumaphos since.  We had lots of mites in past years, but none now.

I wouldn't rule out residual effect from 2 years of coumaphos. It is very
strong medicine

pb

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