>> However through careful testing we found one strip worked fine. However
>> after 5-6 years the scenario with apistan changed.
Bill wrote:
> my understanding of resistance development
> would make the practice of reduced treatment result in faster
> resistance development.
5-6 years effectiveness suggests that it did - beekeepers in the UK and
elsewhere got 10 years before resistance set in - as forecast by the
manufacturer.
Best wishes
Peter Edwards
beekeepers at stratford-upon-avon.freeserve.co.uk
www.stratford-upon-avon.freeserve.co.uk/
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