Figure 5
From: Imaging local soil kinematics during the first days of maize root growth in sand
Vertical cross section of the greyscale image and vertical profile of sand bulk porosity at the initial state, Day 0 (left); change of the bulk porosity of sand with the distance from the surface of the primary root (the yellow area represents the distance range where the porosity is higher than the initial global one): for a given distance the porosity is computed within a hollow volume such as one of the red volumes drawn on the greyscale image around the root tip (center). The position of the small volume of soil used for the analysis is shown in the top right corner of each row.
