Fall tillage is so common with corn/soybean growers because in the northern tier everyone’s trying to maximize their growing season. Tillage in the fall gives the residue more time to break down so it doesn’t foul the planter and turning the fields black enables them to warm up and dry out in the spring much faster than residue-covered fields, so it can enable earlier planting dates.
Most producers in the northern tier look at spring tillage as wasted time that could have been spent planting. If you’re going to wait until things dry out enough to do all your tillage in the spring, they feel that puts them behind and wastes growing season that could have been used to increase yields.
Yes, erosion is an issue. But so is compaction and running big equipment over wet ground in the spring leads to greater compaction. Everything is a tradeoff. Most producers now are using less intensive tillage and going to the minimum possible disturbance to minimize erosion. A far cry from the old days when everyone was plowing and leaving high ridges of soil standing up in the wind.
I agree, I would like to see way more CRP, way less fencerow to fencerow, and far larger buffer strips. I would also like to see greater use of cover and conditioning crops for erosion prevention and soil health.