Roots on Tarp (IMAGE) American Society of Agronomy Caption Researchers air-dried harvested apple roots. The roots were further dried in an oven to measure biomass. Credit Greg Peck 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.