| Soil Amendment | Number of U.S. No. 1 Plant−1 | Number of U.S. No. 2 Plant−1 | Number of Unclassified Plant−1 |
| SS | 4.48 ± 0.66 a | 6.81 ± 1.27 ab | 0.57 ± 0.21 a |
| CM | 3.52 ± 0.58 ab | 4.43 ± 0.36 ab | 0.19 ± 0.11 a |
| HM | 3.33 ± 0.52 abc | 3.38 ± 0.51 b | 0.43 ± 0.16 a |
| Vermi | 3.62 ± 0.49 ab | 5.76 ± 0.73 a | 0.53 ± 0.22 a |
| Organic | 2.09 ± 0.36 d | 3.86 ± 0.39 b | 0.29 ± 0.12 a |
| Inorganic | 4.05 ± 0.53 a | 6.0 ± 0.86 ab | 0.38 ± 0.17 a |
| No-Mulch | 2.10 ± 0.38 d | 3.1 ± 0.29 b | 0.3 ± 0.16 a |
| SSBio | 4.19 ± 0.51 a | 5.76 ± 0.55 ab | 0.38 ± 0.12 a |
| CMBio | 3.43 ± 0.53 ab | 5.28 ± 0.25 ab | 0.43 ± 0.11 a |
| HMBio | 2.19 ± 0.28 cd | 3.62 ± 0.36 ab | 0.24 ± 0.11 a |
| VermiBio | 4.19 ± 0.67 a | 6.21 ± 0.59 ab | 0.62 ± 0.22 a |
| OrgBio | 3.43 ± 0.23 ab | 5.57 ± 0.50 ab | 0.24 ± 0.09 a |
| InorgBio | 3.57 ± 0.49 ab | 5.75 ± 0.28 ab | 0.27 ± 0.17 a |
| No-Mulch Bio | 2.62 ± 0.44 abc | 5.04 ± 0.33 ab | 0.62 ± 0.22 a |