| Plant | Soil depth (cm) | Root length density | Specific root length | |
| (cm∙cm−3) | % | cm∙g−1 root dry weight | ||
| Faba bean | 0 - 20 | 0.59 ± 0.012 | 72 | 18.41 ± 1.83 |
| 20 - 40 | 0.23 ± 0.008 | 28 | 7.3 ± 0.52 | |
| 40 - 60 | - |
| - | |
| Onion | 0 - 20 | 0.37 ± 0.015 | 71 | 35.12 ± 3.7 |
| 20 - 40 | 0.152 ± 0.02 | 29 | 14.44 ± 2.5 | |
| 40 - 60 | - | - | - | |