Bob wrote

> 120 degree F. temp for 24 hours will kill the nosema spores also (
> USDA-ARS). One beekeeper reports a decent
> spore kill with a 8 hour treatment. He said he does not understand the
> reason behind needing 24 hours. He said once the comb has reached the 120 
> F.
> the spores are dead.

I imagine that there is a heating up factor here.  Is it that the nosema 
spores are killed once the temperature reaches 120F (49C) or is there a time 
needed at this temperature?  If so, I would imagine there would be an 
extrapolation for higher temperatures.

Trevor Weatherhead
AUSTRALIA 

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