The paper is refereeing to dribble method and they used high concentration up to 20%. The recommended dose in Canada and the USA and many places around the world is 3.5% and maximum dose 50 ml/ hive (5 ml per space between frames occupied by bees). The Canadian Label is in this link.



http://honeycouncil.ca/archive/documents/29575%20Approved%20E%20label%2004Nov2010.pdf



It would have been interesting to take bees from the treated hives and check the percentage of bees damaged by OA.





Medhat Nasr



Alberta, Canada

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