Urea Granules (IMAGE) American Society of Agronomy Caption These are Urea granules treated with Nutrisphere-N maleic-itaconic acid polymers (MIPs). Credit Darin Lickfeld Usage Restrictions Please use with 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.