Oxalic Acid Sublimation treatment in Dec. #734819 - Ask Extension

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Oxalic Acid Sublimation treatment in Dec. #734819

Asked December 03, 2020, 4:27 PM EST

At the OSBA conference Dr. Sagili mentioned the use of 4 gram dose of OA as possibly being more effective than the recommended 2 gram dose.  Is it ok to use this dose in winter treatment?  If so is the duration of the process longer, and if so by how much time needs to be added to the treatment?  

Washington County Oregon

Expert Response

Good morning,

Thank you for your query. In our experiment we used the vaporizer twice in the colonies that received the 4 gm OA dose (2 gm was vaporized each time). We did this to make sure all 4 gm is vaporized well inside the hives. I would suggest to follow the label and use the label dose at this time until more conclusive evidence is generated in the near future.
Ramesh Sagili Replied December 04, 2020, 2:25 PM EST

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