> >And, I think, these types of yards would bee needed to bee established in
> more than a few variously located areas throughout the U.S. to get better
> results.


I agree Mike.  I've been in discussion with the authors about the need to
qualify the results of such research by region, time of season, degree of
natural pollen flow, etc.

As Ruth notes, our environment in bone-dry California is very different
than that of wet and humid Florida.

-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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