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Date: | Sat, 13 Mar 2010 08:47:27 -0700 |
Content-Type: | text/plain |
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> ...After two years vaporizing in November, and finding high mite counts in
> early summer, I was advised by Heilyser to vaporize 3 times, 7 days apart
> in September. I did. Mite count went up or stayed the same...1 week after
> final treatment.
Hmmm. Four things:
1.) I never did think the Heilyser unit was the best option, after reading
all the European web info available back at that time about sublimation and
the fact that some units seemed to work better than others. I did not have
enough specific info to form a conclusion, however.
2.) Doing September application without a November treatment does not make
sense to me, given what we know about he reduction of brood area over
September and October and the sudden mushrooming in phoretic numbers as the
last brood emerges.
3.) Some strains of bees in some regions may never go broodless. That is a
very big problem with oxalic.
4.) Is reinfestation form outside a possibility?
I am sure you made much a closer investigation of the exact mite profiles
than is easily summed up here.
I notice that Cor is using mite drops and has all along. It is my preferred
method, too, because it is non-destructive and non-invasive and can be done
any time and many times. Of course the interpretation is much like reading
chicken entrails, (but if that was good enough for the Emperors, it is good
enough for me). Drops can be misleading in the wrong hands, but are a good
glimpse into the working for those who are not too literal-minded.
Medhat has some data and I don't know if he has it in a format suitable for
presentation here, but if he does and offers it, that would help.
The fact that everyone here is back to strips (except Cor and I don't know
who) is an indication of the unpredictability of oxalic and formic
treatments and the fact that we don't have the whole thing nailed down.
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