TABLE 3.
Effects of crop diversification on the structure of the bacterial community in the canola rhizosphere, in 2013 and 2016, according to PERMANOVA (α = 0.05, n = 12), and significant differences between the structure of bacterial communities per crop diversification level according to Blocked Multi-Response Permutation Procedures (BMRPP) with Šidák correction for two-way comparisons (α = 0.035, n = 12).
| PERMANOVA |
||||
| 2013 |
2016 |
|||
| Source | DF1 | P-value | DF | P-value |
| Overall model | ||||
| Crop diversification | 3 | 0,202 | 3 | 0,047* |
| Residuals | 44 | 44 | ||
| Lacombe | ||||
| Crop diversification | 3 | 0,88 | 3 | 0,262 |
| Residuals | 12 | 12 | ||
| Lethbridge | ||||
| Crop diversification | 3 | 0,131 | 3 | 0,292 |
| Residuals | 12 | 12 | ||
| Scott | ||||
| Crop diversification | 3 | 0,319 | 3 | 0,479 |
| Residuals | 12 | 12 | ||
| MRPP | ||||
| Monoculture2 | a3 | a | ||
| Low | A | ab | ||
| Medium | A | ab | ||
| High | A | b | ||
1DF : Degree of Freedom. 2Monoculture, canola monoculture; Low, wheat-canola rotation; Medium, pea-barley-canola rotation; High, lentil-wheat-LL-pea-barley-RR. 3Within each column, crop rotations associated with the same letters are not significantly different.