About 15 years ago I sold the last of my land in Western Kansas to a cousin who farms out there. He is using a "no plow" system wherein he does not plow up the stubble like we used to. He cuts his wheat and then drills right into the unplowed ground...(If I understand the technique properly.) We used to watch bellows of dry dirt blowing away behind our one way plows as we chugged over the ground. I don't think his yeld is as much as it was using the old way, but he makes up for it in lower fuel costs. As I recall I used to burn about 35 gallons of fuel a day plowing in my grandfather's old W9 tractor. Fuel was about 25 cents a gallon then and even at that price it was a major expense.