Harvester Weights Switchgrass Biomass (image) American Society of Agronomy Share Print E-Mail Caption Harvesting switchgrass biomass samples with a flail harvester. Machine cuts and picks up biomass, blows it through a chute, weighs the biomass, and dumps in a wagon. Students pull random samples for dry matter determination. Credit M. Casler Usage Restrictions For use with story only Share Print E-Mail 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.