Re: Why not use Oxalic Acid?
There is a philosophical problem here, that of restricting treatments available, ie, offering to allow OA if Amitraz is disallowed.
Originally Posted by knute
When varroa arrived in my country we had the advantage of seeing what had happened in the rest of the world and the problem of varroa getting resistant to treatment. Our own governing body therefore, off it's own bat and based on research supplied from the interested groups, decided to allow many mite treatments, OA being one of them. (Coumaphos was not). In the discussion document it was noted that problems overseas had a twofold cause. Treatments were often restricted to a very small number of types meaning they were used repeatedly until they didn't work and then another would be introduced which again would be used until it didn't work. This situation encouraged the illegal use of products which means they are not being used by label and also leads to problems such as resistance.
Learning from this, our own governing body made many products available and encouraged beekeepers to use all of them and rotate them. Because of this, resistant mites are almost non existent in my country. The only exception being one area where a group of beekeepers doggedly used Apistan each six months, every time, until just recently they have found resistance. Their own stupidity in my opinion.
If this philosophy were applied, the US EPA ought to be looking at the big picture, ie, enabling the means to kill mites and keep doing so for the longest possible time. The nature of a regulating body, and it's a natural progression, is they can come to see their job as finding reasons to say no to things. Wrong basic premise when dealing with varroa.
There is no sensible reason to say no to OA. If allowed legally, when it is used, something else is not being used. There is more alternation between products, and less likelihood of immunity developing, or even being maintained if it does.
2 cents from the other side of the planet!
44 years, been commercial, outfits up to 4000 hives, now 120 hives and 200 nucs as a hobby, selling bees. T (mostly).