Glen Stenzel is one of the original Iowa Learning Farms farmer partners. He has been farming for around 50 year, the last 20 years with his son. Together they farm 3,500 acres of row crops, all in no-till. Farming in the highly erodible Loess Hills area, no-till is crucial--Glen has been no-tilling for over 30 years. They use herbicides for weed control instead of tillage.