Lawn Nitrogen Runoff Graphic (IMAGE) Advanced Science Research Center, GC/CUNY Caption Fertilized residential lawns were found to be a significant source of nitrogen runoff. Credit Shawn Rhea Usage Restrictions All rights reserved License Original 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.