Researchers collecting data (IMAGE) American Society of Agronomy Caption Researchers measure experimental plots and collect data from a field trial to learn about nitrogen loss from different food products. Credit Shu Kee Lam 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.