>
> >I've always taught newbees
> that colonies brood or expand
> their way out of most problems.
>

I agree, Joe.


> >When broodnest expansion is
> hindered for any reason, after
> a period of time, IMO, it can
> contribute to a colonies ability to
> manage miladies in a most efficient
> manner.


I'm not about broodnest expansion on a physical basis, but yes to the
necessity of maintaining a rapid turnover of the population.  In my recent
presentations at conferences, I've been pointing out that the entire adult
population overturns, on the average, in less than 5 weeks during spring
and early summer.  When population turnover slows down, parasites can catch
up.

I will be elaborating soon in an article in ABJ.
-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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