A novel "green" fertiliser (IMAGE) Deutsches Elektronen-Synchrotron DESY Caption The co-crystals of the novel fertiliser (symbolised here with gypsum) release their nutrients much more slowly. Credit DESY, Gesine Born Usage Restrictions Can be used free of charge for articles on the paper 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.