Soil profile of a test field
Samples the size of a brick were taken from the soil at different depths and the roots were then isolated, scanned and measured.

Links
- https://www.inres.uni-bonn.de/en/about/news/agriculture-study-delivers-unexpected-results/bodenprofil-eines-versuchsfeldes_.jpeg/image_view_fullscreen
- https://www.inres.uni-bonn.de/en/about/news/agriculture-study-delivers-unexpected-results/bodenprofil-eines-versuchsfeldes_.jpeg/@@download/image/Bodenprofil eines Versuchsfeldes_.jpeg