Copper seems to be the big topic this year but I'm not going to make a separate pass just to get it out there.  I can throw it in with some fertilizer and side dress it on some seed corn acres, and I already put it on with my bean post spray a few weeks ago so that would cover about half my acres.  For my yellow corn I may be able to mix it with some fertilizer and run it through the pivots but I'll need to figure out how to agitate it.