by Ben NuelleLISTEN: world-of-agriculture-12-5-16Monday is World Soil Day. Soil is the farmer?s most valuable resource.Roger Zylstra grows corn and soybeans on highly erodible ground in Jasper County.One way he manages his ground is no-till planting and cover...
![Jasper County farmer says cover crops have improved his soil health](https://d30hko96l9xirl.cloudfront.net/Iowamediafolder/2023/07/29231041064-d40edfe0c7-k.jpg)