TABLE 3.
Alpha diversity indices for the bacterial and fungal components of the rhizosphere soil microbiome, as affected by the soil treatments
| Microbe | Treatment | Diversity (Shannon) | Richness (Chao1) | Faith's PD | Evenness |
|---|---|---|---|---|---|
| Bacteria | Control | 8.97 ± 0.04c | 2,895.96 ± 17.48d | 233.70 ± 2.32c | 0.993 ± 0.001a |
| B | 9.35 ± 0.02b | 4,001.32 ± 17.98b | 260.64 ± 2.59b | 0.994 ± 0.000a | |
| D | 9.01 ± 0.03c | 3,732.79 ± 34.02c | 256.89 ± 2.82b | 0.993 ± 0.001a | |
| DB | 9.07 ± 0.09c | 3,867.58 ± 29.74c | 258.82 ± 2.38b | 0.993 ± 0.001a | |
| DB + 40dp | 9.57 ± 0.06a | 4,445.55 ± 36.77a | 295.70 ± 2.88a | 0.993 ± 0.004a | |
| Fungi | Control | 4.68 ± 0.17a | 743.45 ± 17.53a | 361.14 ± 18.38a | 0.812 ± 0.016b |
| B | 4.16 ± 0.23b | 567.81 ± 14.97b | 189.41 ± 2.15b | 0.890 ± 0.017a | |
| D | 3.57 ± 0.16c | 505.20 ± 15.29c | 185.74 ± 2.27b | 0.824 ± 0.014b | |
| DB | 3.28 ± 0.22c | 500.69 ± 13.41c | 159.83 ± 1.97c | 0.845 ± 0.017ab | |
| DB + 40dp | 1.94 ± 0.11d | 322.59 ± 2.45d | 119.06 ± 1.81d | 0.881 ± 0.016a |
Values are means ± standard deviation (n = 3). Means followed by the same letter for a given factor are not significantly different (p < .05; Duncan test). Treatments were as follows: Control; no treatment, B; 1.50 kg bio‐organic fertilizer per m2, D; 30 g dazomet per m2, DB; combination of D and B, DB + 40dp; combination of DB and tillage to a depth of 40 cm.