Biochar Field Experiment (IMAGE) Colorado State University Caption This is a field experiment in Switzerland, with setup of compost windrows from mixed manure before adding the biochar. Credit Nikolas Hagemann/University of Tübingen Usage Restrictions None 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.