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Discussion Starter · #1 ·
A more-experienced beek told me the other day it's her understanding OA dribble can result in queen mortality 20% of times. Does anybody have data on that or heard of that? If correct, it gives me the creeps.

Why would that be? If the recipe is followed to a t .... would maybe the queen be health-compromised anyway and more susceptible to the acid? Or .....? :s

Any and all ideas/info welcomed.

Mitch
 

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She is wrong, OAD has been investigated numerous times with only background levels of queen loss observed. Here is one example, but contains discussion of losses observed in other studies. These studies ranges from background rates of loss (0% to 3% loss) when solutions of less than 5% OA were used, with slightly higher losses observed with OAD's above 5%. Repeat OAD's over the winter period should be avoided as that will result in increased losses.

Scientific beekeeping has a good review: http://scientificbeekeeping.com/oxalic-acid-questions-answers-and-more-questions-part-1-of-2-parts/
 

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Discussion Starter · #3 ·
She is wrong, OAD has been investigated numerous times with only background levels of queen loss observed. Here is one example, but contains discussion of losses observed in other studies. These studies ranges from background rates of loss (0% to 3% loss) when solutions of less than 5% OA were used, with slightly higher losses observed with OAD's above 5%. Repeat OAD's over the winter period should be avoided as that will result in increased losses.

Scientific beekeeping has a good review: http://scientificbeekeeping.com/oxalic-acid-questions-answers-and-more-questions-part-1-of-2-parts/
Thx much, SG; good info. I don't have any idea where my contact got her info ... from an uninformed source, I guess .....
 
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