Removing dense layers, using vertical tillage, is another step toward making sick soil healthy again. After layers are removed, continue to farm the soil with vertical tillage, strip-till or no-till. Often, a search for knowledge not only answers a question, but also raises new ones. That’s the case with a nine-year study, in which Farm Journal Field Agronomist Ken Ferrie is attempting to improve the health of abused soil. The study involves two farms within a mile of each other.