Switchgrass (1 of 3) (IMAGE) DOE/Argonne National Laboratory Caption A switchgrass plot grown as part of an Argonne National Laboratory-led study to test how genetic variation within the switchgrass species affects growth. Researchers found that mixing genetic varieties from different geographical regions promotes overall crop growth. Credit Image provided by Julie Jastrow, Argonne National Laboratory 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.