Table 1.

Effect of backfill amendment on root growth of Acer rubrum.

TreatmentRoot system diam (cm)Root weight (g)
Inside holeOutside hole
≤2 mm>2 mm≤2 mm>2 mm
Native soil120b57ab36a7a2a
50% bark: 50% soil149a46b32a21a9a
50% CLM: 50% soil135ab67a30a20a3a
100% CLM140ab53ab26a13a3a

  • Means within columns followed by the same letter or letters are not significantly different at the 5% level using the Duncan’s Multiple Range Test (n=6).