David you may recall that soem time back we had a discussion here on
glyphosate residues - it arose from a post that was made by Sheldon and
where I responded about how it seemed to leave residues that had an impact
on roses. You asked if anyone had seen and 'real' info on any residues.

The Jan/Feb 2013 (and yes, that 2013 date is correct) copy of the ABC
'Organic Gardener' mag has a response from Jerry C-W in the Q and A section
about this very topic and he's given has lots of cites. It seems there is
lots of well researched findings on the residues and he mentions which foods
it can be found in which were grown a year after application.