Pa. farm landscape (IMAGE) Penn State Caption In the simulations, hay was reallocated onto landscapes most vulnerable to erosion and nutrient loss, such as the areas near streams, whereas corn-soybean rotations were reallocated onto less vulnerable areas. Credit Patrick Drohan, Penn State Usage Restrictions non commercial use 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.