Figure 4From: Rhizo-lysimetry: facilities for the simultaneous study of root behaviour and resource use by agricultural crop and pasture systemsCanola root activity in 2004 using mini-rhizotrons at six depths in the red Kandasol. (a) The total number and number of canola root intersections counted at each depths as a function of time after sowing. (b) The time taken after sowing for canola roots to achieve the critical depths of 0.2, 0.4, 0.65 and 0.9 m. In the equation in figure b; y is the depth of roots (m) and x is the day of observation after sowing.Back to article page