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Well, one of the theories is that pesticides weaken bees and make them more vulnerable to varroa mites and other parasites, diseases etc. (the "potential immune
by rob74 8y ago
Well, one of the theories is that pesticides weaken bees and make them more vulnerable to varroa mites and other parasites, diseases etc. (the "potential immune-suppressing stress" in your quote).
- lostlogin 8y agoOnce you get on top of varroa it is amazing how fast a hive grows. It seems to take a while for other problems to subside (sac brood, deformed wing virus etc) and a requeening seems to be required sometimes. I’ve been using a variation on the Randy Oliver method with oxalic acid and it’s bring the varroa down fast when used. Weekly counts of varroa on a cup of bees has been (averaged) 15, 12, 8, 4, then 1 or 2 last weekend. The behaviour of the hives has changed too, and they are more settled (or as settled as can be, mid robbing season).