RE: Discing new ground?
Disc it about 4 or 5 times it should be enough, when I seeded lawns I just disced the h3ll out of it until it was emulsified, I have been discing for wheat with a 36 ft disc twice, the fertilize , then disc again and plant wheat, we dont plow any more, spring or fall. Put some blocks on it for weight then have at it....