Hello beekeepers!

The reason for the brood less and thereby autumn  treatment by oxalic acid
is that the oxalic acid is not killing varroa mites in capped cells, it will
simply not go though the capping. That's why it is recommended to do a
spring treatment with formic acid, because this treatment will also kill
varroa in capped cells.

You can still find the Danish Varroa report in English on my site. There is
a newer one but there was not that much difference in that present at my
site and the new one. Formic acid is used for a long time here in Denmark
and oxalic acid is also used.

Best regards
Jorn Johanesson

Only Multilingual software for beekeeping on the net

hive note- queen breeding and handheld computer beekeeping software since
1997

home page = HTTP://apimo.dk
e-mail [log in to unmask]

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