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Table 1 Impact of growing perennial warm-season grasses in monocultures and mixtures on root biomass on a Tomek silt loam in eastern Nebraska after 6 years of management

From: Root biomass and soil carbon response to growing perennial grasses for bioenergy

Treatments Root biomass (Mg ha−1)
  Depths (cm)
  0–10 10–20 20–40 40–60 60–80 80–100 0–100
Grass mixture 1 11.98 1.54 2.34 1.15 1.32 0.58 18.54a*
Grass mixture 2 11.64 1.34 2.38 1.73 0.87 1.06 18.17a
Shawnee 14.41 1.84 1.61 1.13 0.65 0.81 20.27a
Kanlow N1 12.47 2.53 2.78 1.59 1.05 0.89 20.27a
Miscanthus (Mxg) 9.21 2.22 3.78 0.70 0.66 0.74 16.79ab
Chief 6.82 1.29 1.38 1.12 0.71 0.50 10.63b
LSD 0.10 6.70 1.32 2.44 0.84 0.49 0.86 1.59
  1. The means are back-transformed log values. Perennial warm-season grass monocultures [switchgrass (cv. Shawnee, Kanlow N1), indiangrass (Chief) and Mxg] and grass mixture 1 [big bluestem (Goldmine) + indiangrass (Warrior) + switchgrass (Shawnee)] and grass mixture 2 [big bluestem (Bonanza) + indiangrass (Scout) + switchgrass (Shawnee)]
  2. *Numbers followed by different letters within a column show significant differences among treatments at P ≤ 0.10