Our dirty movie operations might not be what the average person thinks. At the USDA Forest Service Forestry Sciences Lab in Rhinelander, Wisconsin, we are measuring root growth of trees grown with different fertilizer rates. For years, tree growers and scientists did not fully understand tree root systems simply because they are underground. Until recently, roots have only been studied by digging them up. Minirhizotrons allow researchers to observe root response and activity to various treatments without disturbing the root system.
Root systems are the 'anchors' of the tree.
Poor root development puts trees at risk to wind throw, erosion, and flooding. Root systems are one of the 'mouths' of the tree. Roots eat and drink nutrients and water, essential for growth, from the soil. Root systems are the 'cellars' of the tree. Roots store vital starch and protein compounds, especially during the winter.