Tilled Field (IMAGE) University of California - Berkeley Caption Agricultural practices such as planting cover crops to avoid bare fields and reducing soil tillage can increase the amount of carbon stored in soil. Credit Tyler Anthony photo, UC Berkeley Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.