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Informed Discussion of Beekeeping Issues and Bee Biology

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Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
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Tue, 16 Aug 2005 13:08:17 GMT
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Ari asked:

>>I have myself lots of quees that have been in hives for 2 treatments and can see no effects. Also have not seen anything hinting this in our data for 220 hives for 4 yeras. Even overdose or double
tratments in fall  have not given damage to the queen. Only kills a lot of bees during the winter.

I only read about it somewhere.  I treated 3 hives and believe to have applied too much of the [right concentration] solution.  My observation was that the clusters coming out of the winter were smaller than usual.  One queen disappeared, one queen stopped laying after about a month, the third queen laid up only 3 frames and her bees started supercedure.  These had been all young queens raised in the previous July/August.  There could have been other factors but I assumed the decline was due to my applying the full dose to each bee space occupied by bees.  I later came to realize the dose should be directly proportional to the amount of bees in each bee space.

>>For some reason that no one knows the bees can not take 2 treatments in fall.

You mention double treatments have not damaged the queens in your experience.  Are they 'tougher' than the worker bees?

>>Spring treatment must be done immideately after cleansing flight for the colonies to be with only minimal of brood. Here in the north bees don't fly out at all for 4 - 6 months.

A back-up treatment in the spring is always a great option.  I have not done it.  It's August, the bees have recovered, and I don't see varroa in drone brood or on the bees.  I'll check varroa drops in September/October.

Regards,

Waldemar

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