RE: mn food plots???
What part of Mn are you hunting in? I have food plots in NE MN and have had good success with
1) clover; red, ladino, alfalfa, I dont think you can go wrong with the imperial whitetail products. I have plated imperial clover and alpha rack in 1/4 acre plots and they have done great.
2) annuals; turnips sugerbeets and rutabagas are tough to beat in the fall they destroy the plots and dig through snow to get them. If you are in a tough spot to plant I use winter rye and winter wheat and oats. This combo also is extremly good and cheap. just spray to kill and drag some form of dirt ripping device with a quad and broadcast (before a rain if possible)
good luck