On 01/09/2012 23:20, randy oliver wrote:
> Back to economic threshold, with regard to alcohol wash, if I observe
> mite infestation rate to exceed 5%, I consistently see virus infection
> in the broodnest. If I keep the mite infestation down to less than 2%
> at highest (lower for most of the season), then the brood remains healthy.
Is this your own experience?
Are there other references/experiences about treatment thresholds?
Thanks
--
Umberto Vesco
DVM, PhD
Italy
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