Fig. 8

Seed–soil contact calculations based on X-ray scans of field cores with a pelleted and coated sugar beet seed. a Showing the seed–soil contact calculations based on the described method showing the surface area, the contact area and the seed–soil contact percentage. b Displays the iceberg effect calculations showing the contact area divided by soil volume percentage of the 100 µm ring, the soil volume percentage of the 100 µm ring divided by soil volume percentage of the 300 µm ring and the contact area divided by soil volume percentage of the 300 µm ring displayed as a percentage. Error bars calculated for standard error deviation. N = 3