Straw and chaff should be spread by the combine as there is no tillage operations to spread or bury the residue. Good spreading takes the cussing out of seeding. Fuel costs are down. Repair costs are down. Labour costs are down.
Capital costs are down.
Seed control costs are up. On b alance, the yields measure up very well and yields have improved with improvements in the seeding equipment. Erosion control under zero till is highly successful. It is better than tree rows. It is better than strip farming.