Varroa

As W. Thompson said, “what is not measured cannot be improved.” Applied to our case, we need to know how much varroa we have in order to make informed control decisions. Choosing the hives to sample is crucial, as varroa is not evenly distributed among the hives in an apiary. It is common for 10% of the hives to have significantly more than the others. We can base our inspection on about 10 hives per apiary, selecting some from both ends of the apiary and the middle that show signs of entrance activity.