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Fri, 19 Sep 2003 09:03:35 -0400 |
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At 06:59 03-09-19, you wrote:
>When you use any IPM method such as drone brood removal, FGMO or screened
>bottom boards you knock back the varroa population thus extending the time
>the hive can survive . 100% elimination of varroa from the hive is not
>possible we have been told by researchers.
>
>As time goes on each year the varroa mite load continues to rise as a higher
>mite load starts the spring with methods which provide little control and
>then you find yourself with a hive at varroa load threshold.
That is simply not true and happens only when there is poor management. For
sure 100% elimination is a big goal but 100% is not needed in order to have
an efficient control. Most IPM methods, especially combined methods, will
make the control efficient on indefinite periods and levels of infestation
can be kept very low all year round. This is the case of thousands of
hives in Switzerland and elsewhere in the world. One thing is for sure:
there has been no non bio method that has been efficient on a long period....
Normand Choinière
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