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Informed Discussion of Beekeeping Issues and Bee Biology

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Subject:
From:
"Lipscomb, Al" <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Wed, 14 Jul 1999 12:45:12 -0400
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>I have treated fall and spring with Apistan for years now, but a few days
ago
>noticed a lot of worker bees crawling on the ground in the vicinity of one
of
>my hives.  On inspection, every one of them had deformed wings, so I knew
>varroa got to them.  It has been only about six weeks since I removed the
>Apistan strips, therefore obviously I have begun to experience varroa
>resistance to Apistan.  I made a quick call to get some Check-Mite
(coumaphos)
>strips.

Now that there are two treatments available for Varroa mites, should there
not be some thought into rotating the treatments to reduce the chances of
resistant mites? For example, spring treatment with Check-Mite and fall
treatment with Apistan?

Since coumaphos is a nastier chemical, maybe only one treatment in four
(fall of odd years)?

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