>
> >The transplant water and split treatments resulted in significantly higher
> imidacloprid amounts ranging from 30-101 ppb in pollen and 3.8-13.7 ppb in
> nectar.


Thank you Pete!  When I followed your previous link, I came up with an
earlier report, in which they did not collect nectar directly:
http://entomology.umd.edu/files/entm/documents/mhwg/Report_of_Watermelon_Residue_data.pdf


I now see that you are referring to a later study, in which they appeared to
directly sample nectar and pollen:
http://agresearch.umd.edu/recs/WREC/files/2010Programs/EASPumpkinStudyPollenandNectarResidues2010.pdf

The results of the second study indeed appear to have found residues in the
general range at levels at which one would expect to start seeing effects
upon bees.  This makes much more sense with regards to reports of problems
in cucurbits if they are post transplant treated.

Randy Oliver

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