Treatment

Class

Prime

Marginal

Monocultures

Switchgrass (SG)

7.6

5.0

Prairie cordgrass (PC)

10.5

13.6

Cup plant (CP)

7.4

10.8

Binary mixtures

SG/CP

6.5

9.7

PCG/CP

8.7

11.6

Tertiary mixture

SG/PCG/CP

8.6

10.8

lsd (0.05)

2.6

3.2