Table 3.

Subsurface barrier effects on mean root depth (cm) at 30,90, and 150 cm outside barriers.

Distance from barrier (cm)Distance from barrier (cm)
Root depth (cm)Root depth (cm)
With subsurface barrier28.3 a17.9 a12.124.3 a16.4 a11.7a
Without subsurface barrier20.3 b10.8 b9.516.1b8.3 b6.0 b
  • Means within columns followed by the same letter are not significantly different using Fisher’s Protected LSD (p=0.05). n.s = not significantly different. Means calculated across subtreatments and block (25 trees). There were no significant main x subplot interactions.