Hi bee lovers !
 
On Wed, 7 Sep 1994 11:34:00 -0700 Paul van Westendorp wrote ...
 
> 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.
 
-- cut --
 
Seems we don't forget there is frame and frame : you may not compare a
Dadant, a Langstroth and a British Standard (about 21x36 cm) frame.
In my opinion, and it is the Zoecon-Sandoz recommendation, the correct
dosage is ...
 
1/ Two strips close the brood (one on each side of the hive) in the
   established colonies, as soon as possible after the last removing
   of the supers.  The best is making the treatment at the same time
   in all the apiaries of the country to avoid re-infection by looting
   or drifting.
 
2/ In the other small colonies (nucs, swarms, emergency queens), only
   one strip close to the brood.
 
For 1985 it's the treatment mode we use here in Belgium and the mite
(varroa m.) level seems generally low.
 
Jean-Marie         <[log in to unmask]>