Bees, mites and ragwort, heard of any theories tested?

Question

Has anyone heard of tests between ragwort, bees going for the pollen and possible effects of the poisonous toxins on the bees mites...? Possible rotational links between control of the ragwort and decline of the bees?

Answer 1

possible , pursue it , Veroa is the main mite causing the damage . see if Veroa enjoys the habitat of ragwort .  Some colonies survive , I know one which is strong in a field where no spraying happens .