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Oxalic fogging.
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<blockquote data-quote="JohnF" data-source="post: 13256" data-attributes="member: 233"><p>There's been a bit of research on oxalic (and not just staples):</p><p> - one compared vaping oxalic vs trickling and concluded that tricking was superior</p><p> <a href="https://doi.org/10.1080/00218839.2017.1327937" target="_blank">https://doi.org/10.1080/00218839.2017.1327937</a></p><p></p><p>- another stated that their vaping could not bring down varroa levels below their threshold</p><p> <a href="https://doi.org/10.1093/jisesa/ieab089" target="_blank">Assessing Repeated Oxalic Acid Vaporization in Honey Bee (Hymenoptera: Apidae) Colonies for Control of the Ectoparasitic Mite Varroa destructor</a></p><p></p><p>However more recently, Cameron Jack in the USA has been studying the oxalic concentration to use for vaping, suggesting that higher levels than the USA legal limit of 1g are superior (up to 4g per brood box)</p><p>[URL unfurl="true"]https://doi.org/10.1080/00218839.2021.1877447[/URL]</p><p></p><p>I agree with Tristan - need to know the levels beforehand. Here in Gisborne my few hives have had remarkably low levels in mid-Feb when treatments went in</p></blockquote><p></p>
[QUOTE="JohnF, post: 13256, member: 233"] There's been a bit of research on oxalic (and not just staples): - one compared vaping oxalic vs trickling and concluded that tricking was superior [URL]https://doi.org/10.1080/00218839.2017.1327937[/URL] - another stated that their vaping could not bring down varroa levels below their threshold [URL="https://doi.org/10.1093/jisesa/ieab089"]Assessing Repeated Oxalic Acid Vaporization in Honey Bee (Hymenoptera: Apidae) Colonies for Control of the Ectoparasitic Mite Varroa destructor[/URL] However more recently, Cameron Jack in the USA has been studying the oxalic concentration to use for vaping, suggesting that higher levels than the USA legal limit of 1g are superior (up to 4g per brood box) [URL unfurl="true"]https://doi.org/10.1080/00218839.2021.1877447[/URL] I agree with Tristan - need to know the levels beforehand. Here in Gisborne my few hives have had remarkably low levels in mid-Feb when treatments went in [/QUOTE]
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