The English Central Science laboratory recommend a treatment threshhold of
only 1000 mites, this is because of the impact of virus

Ruary

----- Original Message ----- 
From: "Bob Harrison" <[log in to unmask]>
>
> I reported on BEE-L that I saw bees in Florida crashing from virus( PMS)
> when varroa loads were not above what Keith Delaplane and others 
> considered
> treatment threshold. 

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