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Informed Discussion of Beekeeping Issues and Bee Biology

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Date:
Sun, 22 May 2016 18:23:31 -0400
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Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
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From:
Robert Darrell <[log in to unmask]>
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Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
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Hi Bill and all

I see many posts about oxalic vapourization lately.  Although oxalic  
acid application both dribble and vapour is approved in Canada I  
thought it had not been in the US as yet (please correct me if I am  
mistaken).  Many of the methods posted here are not allowed in  
Ontario, I copy here the recommendations from the Ministry of Ag;
Late Fall

Treatment Material: Oxalic acid trickle method
Method of Treatment: Apply when monitoring indicates treatment is  
necessary.
Caution: Oxalic Acid may damage bee brood. Oxalic Acid will not  
control varroa mites in capped brood.
Use only when little or no brood is present. Use only in conjunction  
with an early fall treatment. Do not use when honey supers are in  
place to prevent contamination of marketable honey.

I was surprised that no mention is made of the vapour method which is  
approved & used by some.


Bob Darrell
Caledon Ontario
Canada
44N80W


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