We usually take a big offset disc for the first pass and then come back with a 8 footdisc before planting. On cereal grains this year we used a spike tooth drag harrow to cover the seeds. Worked great at covering the shallow seeds, but we had about 7 weeks of no rain after planting and the young sprouts dried up and died before they could get started. Now the 60 or so plots we planted look like crap.