Re: Bottom Board Mite Counts
I need to preface with I'm not a fan of mite counts on sticky boards, but you asked how to interpret. For my $.02, body counts don't provide meaningful numbers on mite infestation or treatment effectiveness. I get little information except some mites were killed; but without knowing the number of bees in the sample, aka a hive full isn't quantifiable, you don't know the infestation percentage; nor do you know how many mites are retained percentages.
Some folks may have some rule of thumb to interpret 300 dead mites but I've not heard of a reliable means to estimate the effectiveness of a treatment using sticky board counts. Mite counts before and after are the only way I know to quantifiably determine a treatment's effectiveness.
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