There are a growing number of row crop farmers who are recognizing the importance of soil health and are seeing the results of using methods to promote it. Many use components of conventional ag as well as more natural practices. Used to be farmers looked at N-P-K and that was about it, while many now are recognizing the importance of soil structure and biological activity as well. A long time cover crop man about forty miles from me has changed his soil structure from the use of deep rooted covers, pushing the natural hardpan in our local soils from 12-18" deep to over 36" or more, increasing water holding capacity and infiltration. Although I haven't used covers that extensively, I am dedicated notill using tillage only when absolutely necessary and the benefits show. Our fields are solid, not compacted, with loads of earthworms. Long term, I believe the ag community will recognize the strictly conventional methods aren't sufficient for long term (centuries) sustainability.