Feed corn will definitely germinate and grow ears of corn. Chances are more than 99% that it will be rr. Problem with growing a decent stand of corn is weeds. Weeds can reduce yields to almost nothing. Plus corn requires a 2nd application of N just as late as you can get over it with a spreader. So, if you are going to spend $100/ac for weed control (3 passes) and another $150/ac for fertilizer, do you really want to skimp on seed cost? Seed corn is treated with several genetics like fungicide and insecticides. Some seed is treated with over a dozen seed treatments. Discing a plot and throwing out seed corn plus a little fertilizer is more for stress relief for the guy planting it. It gives you something to do. If you want to grow a decent stand of corn you need to buy seed corn or get with your local NWTF and get their seed. Also, we have so many Roundup resistant weeds now that just spraying Roundup is a recipe for failure