So far no one has responded to my challenge to show me photographic evidence of bees seeking out gutation droplets from corn.
Cotton has external nectaries, so that doesn't count.

I've raised and harvested corn - never saw honey bees going after gutation droplets in our semi-arid climate.  Weeks spent in corn belt during tassel - again, never saw a honey bee going after gutation droplets.  I'll admit, that may vary with variety of corn or climate (e.g., humid versus  dry, etc.).  Just because one can show the pesticide in the droplets doesn't mean honey bees harvest it - some proof please, I'd like to know.

Wasps, hornets - that's another issue - they were a plaque on the sileage pits.

Here's a "guttation" paper I have yet to slog through, just as an example of
how the subject is now being looked at from multiple angles. Note that it is
published in a very respectable journal,
http://jee.oxfordjournals.org/content/early/2015/10/29/jee.tov287
http://tinyurl.com/p67duyn






             ***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software.  For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html