I've posted this before

A couple of summers back maybe it was 2004 I got a USDA SARE grant to buy a microscope to use to identify the floral sources of pollen in pollen traps and residual pollen in honey

I live in Central Mn and am surrounded by corn and beans, although we have large areas of 
undeveloped land, wetlands, preserves and hobby farms so its a good area for bees. Many 
experienced beekeepers can pull 5 supers off a good hive in most seasons. 

Anyhow our weekly analysis showed minimal corn pollen. All the corn around here is mostly feed 
corn and not sweet corn. 

 I also keep bees all the way south to the Iowa border. I don't hear from any commercial beekeepers 
or hobbyists that they have crashing hives in corn country in central and southern Mn. Other then a 
few CCD cases in those who move to almonds we don't have CCD like problems around here either.  

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