Figure 10 : Measurements of anchorage strength using a modified prostrate tester and the movements of root systems during an artificial lodging test.

From: A new method for assessing plant lodging and the impact of management options on lodging in canola crop production

Figure 10

The gradient colored circle indicates the root–soil cone, which is pushed out and rotates with root movement. A prostrate tester is attached to an adjustable mounted plate and placed perpendicularly at the middle of the residual basal stem.