| Treatment | Root length (cm/plant) | Root surface area (cm2/plant) | Root diameter (mm/plant) | Root volume (cm3/plant) | Number of root tips (per plant) |
| Control | 306 c | 102 ab | 1.06 b | 2.70 bc | 1407 bc |
| Control NPK | 442 d | 136 c | 0.98 ab | 3.34 c | 1604 c |
| Manure | 254 bc | 125 b | 1.57 c | 4.93 e | 1162 b |
| Micosat + Manure | 357 c | 149 d | 1.33 bc | 4.93 e | 1868 d |
| Humus UP | 307 c | 88 a | 0.91 ab | 2.00 ab | 1247 b |
| Humus Active + Aktywit PM | 184 a | 94 a | 1.62 c | 3.81 c | 627 a |
| BF Quality + Manure | 236 b | 81 a | 1.09 b | 2.19 b | 1126 b |
| BF Amin + Manure | 391 cd | 130 c | 1.06 b | 3.45 c | 944 ab |
| Manure + Tytanit | 227 b | 75 a | 1.05 b | 1.98 a | 965 ab |
| Vinassa + Manure | 373 c | 143 d | 1.22 bc | 4.37 d | 1026 b |
| Florovit Pro Natura | 437 d | 127 b | 0.92 ab | 2.92 bc | 1913 d |
| Florovit Eko | 509 e | 87 a | 0.55 a | 1.19 a | 4770 e |