Varroa check with Marla Spivak powder sugar method (Video)

Varroa check with Marla Spivak powder sugar method

Take 100cl (a little over 1/3 of a cup) bees from the first broodframe with capped and open brood. Add two tablespoons of powder sugar, turn the jar so that the bees are covered with dust. Wait for at least one minute. (In the video the waiting time is cut of ) I count the mites while shaking and shake as long there are no mites dropping any more. You can also wash the mites, but it takes much longer. Recording 21.5.2011


Link to <poster> with additional instructions.



If you know how many bees were in your sample, you can
estimate the number of mites per 100 bees. If there is
brood in the colony when you sample, you should double
this number to factor in the amount of mites in worker
brood. For example, if there are 5 mites / 100 bees, the
total infestation is probably 10 mites/100 bees. If your
colony has over 10-12 mites/100 bees, you should consider

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