>I am not disputing Randy's math but he doesn't show each years added
pesticide.

Sorry Bob, was rushing off to conference!  Simple formula--assigned a value
of 1 for treatment.  Each year's end residues would be (1+ previous year's
residue) * 0.5

And yes, if land is rotated, then residue buildup would be much less.
 Grass appeared to increase degradation.

>Randy Oliver, currently in corn country (Iowa), with beekeepers
>> approaching me left and right telling me how their bees do just fine
>> around corn!
>>
>>
> >Including planting dust???
>

I ask them about that.  Many don't notice dust issues at all.  Others
notice minor kill for a few days.  It appears that situations such as yours
in Ontario are the exception rather than the rule.  I feel strongly that in
such cases  beekeepers shouldn't be forced to swallow the losses without
compensation!

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

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