20 - 30 in a mixture or 30 - 40 alone. I would plant with a mixture of Rye , WW, and Oats or any variation of at 50 lbs an acre plus the AWP's. I would guess you would have poor germanation brodcasting into standing corn. I would opt for packing into a prepped seed bed or other means of planting as they call for a 1/2 to 1 inch planting depth. Don't forget inoculant. I have put together a similar mixture to the one above with good sucess.