Mini Rhizotron System (IMAGE) Technical University of Munich (TUM) Caption The so-called mini rhizotron system makes it possible to directly observe and measure root growth. Credit AmazonFACE Usage Restrictions may be freely used by reporters to report about TUM, with proper attribution 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.