Table 2. Degrees of freedom (numerator (Num) and denominator (Den)), F value, and P value, for planned contrasts to test for overyielding in mixtures (mix) relative to component monocultures (mono) of Kernza (K), alfalfa (A), and Silphium (S) with different soil inoculum present.
Live represents the presence of native AM fungi, whole soil, or both.
| Contrast Set | Contrast | Num DF | Den DF | F Value | P |
|---|---|---|---|---|---|
| 1 | mix vs mono overall | 1 | 384 | 12.85 | 0.0004 |
| 1 | mix vs mono x crop community | 3 | 385 | 8.71 | <0.0001 |
| 1 | mix vs mono KA | 1 | 382 | 17.45 | <0.0001 |
| 1 | mix vs mono KS | 1 | 384 | 11.85 | 0.0006 |
| 1 | mix vs mono AS | 1 | 388 | 0.00 | 0.9829 |
| 2 | mix vs mono overall x whole soil | 1 | 384 | 0.96 | 0.3272 |
| 2 | mix vs mono overall x AM fungi | 1 | 384 | 2.51 | 0.1142 |
| 2 | mix vs mono x live vs sterile | 1 | 383 | 6.46 | 0.0114 |
| 2 | mix vs mono KA x whole soil | 1 | 382 | 0.07 | 0.7850 |
| 2 | mix vs mono KA x AM fungi | 1 | 382 | 1.56 | 0.2126 |
| 2 | mix vs mono KA*live vs sterile | 1 | 382 | 4.25 | 0.0398 |
| 2 | mix vs mono KS x whole soil | 1 | 384 | 2.16 | 0.1429 |
| 2 | mix vs mono KS x AM fungi | 1 | 384 | 7.43 | 0.0067 |
| 2 | mix vs mono KS x live vs sterile | 1 | 387 | 12.73 | 0.0004 |
| 2 | mix vs mono AS x whole soil | 1 | 388 | 0.11 | 0.7407 |
| 2 | mix vs mono AS x AM fungi | 1 | 388 | 0.39 | 0.5343 |
| 2 | mix vs mono AS x live vs sterile | 1 | 386 | 0.10 | 0.7513 |