To add a bit to the confusion, the Apistan rate has ben recommended at one
strip for every five frames of brood. This means that the application rate
varies according to season. One may have as many as four strips in a colony
according to those recommendations.
Our field trials have shown that comparable levels of mite control are
obtained when two strips are applied to these colonies instead of four. It
is also important for the producer to properly place the strips between the
frames to ensure maximum contact exposure to the bees.
Regards
Paul van Westendorp [log in to unmask]
Provincial Apiculturist
BC Ministry of Agriculture,
Fisheries & Food