Table 4 Analysis of variance summary table for number of roots penetrating the wax layer, maximum root depth and radii zones of penetration in a controlled environment wax layer experiment comparing root growth between Cadenza and Hereward in sand columns challenged with either strong or weak paraffin wax layers at 5 cm depth from the surface.

From: Exploring the resilience of wheat crops grown in short rotations through minimising the build-up of an important soil-borne fungal pathogen

Analysis of variance F Probability

Variable

Square root number of penetrating roots per plant

Maximum root depth

Radial distance from the seed – square root number of roots penetrating zone per plant1

A:≤22 mm

B:>22 ≤40 mm

C:>40 ≤51 mm

Cultivar

0.084

0.164

0.717

0.405

<0.001

Strength of wax layer

0.002

0.115

0.057

0.044

<0.001

Interaction

0.240

0.029

0.133

0.568

<0.001

  1. 1Zone A: diameter 44 mm; zone B: diameter 45–80 mm and zone C: diameter 81–102 mm.
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