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More recent reporting:
Rosenkranz, P., Aumeier, P., & Ziegelmann, B. (2010). Biology and control of Varroa destructor. Journal of invertebrate pathology, 103, S96-S119.
> Extracts or smoke of e.g. male fern (Dryopteris spec.), nasturtium (Tropaeolum spec.), tobacco (Nicotiana spec.), walnut (Juglans spec.) Contradictory results; some extracts (tobacco) or smoke (walnut) may cause significant mite mortality or lowered population density; sometimes mites are not killed and may recover.
One has to assume that tobacco is not very effective against mite, or else we would all be using it.
PLB
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