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Informed Discussion of Beekeeping Issues and Bee Biology

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Subject:
From:
Stan Sandler <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Sun, 1 Apr 2012 08:15:45 -0300
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Bill wrote:
 >It seems like around 2ppb is what is found in the field,compared to 7ppb
and 11.5 ppb in the tests. Or am I missing something here?

2 ppb is about the concentration of imidacloprid that was found in both
pollen and nectar from canola grown one year after a field had been soil
injected for potatoes.

about 6 ppb is what Cynthia Scott Dupree was finding in the Ontario study
that was used to register imidacloprid as a seed treatment for canola.

about 8 ppb is what was found in sunflowers in France that were seed
treated.

stan

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