Normal stocking density cattle (IMAGE) American Society of Agronomy Caption The normal stocking density treatment involved eight cattle grazing corn fields for 45 days. Credit Morgan Grabau Usage Restrictions For use with this story only. 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.