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Informed Discussion of Beekeeping Issues and Bee Biology

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Subject:
From:
Randy Oliver <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Mon, 12 Feb 2007 22:36:48 -0500
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Hi All
Re Dennis Murrell's post that Mann Lake is selling an unpromoted small cell
size in their standard plastic deep frames.

I went to Mann Lake Woodland today.  I brought along a high quality mm ruler.
I measured ten cells center of wall to center of wall, and measured cells in
all three directions, at several places on the comb.

Virtually all measurements came out at 50mm.
Therefore, the cell size appears to be 5.0mm.

That said, Dee, you claim that 5.0 is a world of difference from 4.9mm, and
that we will have incredible brood disease problems with 5.0mm.
To be candid, this strains my credulity.  The difference between a 4.9 and
5.0mm cell is 0.1mm, or 100 microns.  That is about the thickness of a human
hair.
It is difficult for me to understand how we can keep bees with minimal brood
disease on 5.5mm, and virtually no brood disease on 4.9mm, yet suffer major
brood disease on 5.0mm.
I understand that your claim is based upon empirical tests in the field.
Do you have a theory to explain why 5.0 is less conducive to larval health
than a smaller or larger size?
Thanks,
Randy Oliver

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