First small three apiaries checked, changed for summerbottoms and sampled for stores, stregth, fallen dead bees, chalkbrood and varroa in debri since november OA-treatment. All is good and Varroa is under control. Intresting to find breeders (nr 3 and 4 with low mite rates) Also rather low among sisterdaughters to 69, though she had 300 mites (best crop 2016 and still very strong)
Database here You may sort columns. V 17 = varroa on bottomboards as measured by sampling and counting in alcohol.