| Heavy metals (ppm) | Hg | Pb | As |
| Soil sample 1 | 0.33 | 21.5 | 1.21 |
| Soil sample 2 | 0.21 | 10.33 | 0.13 |
| Plants without VAM | 0.26 | 10.60 | 0.70 |
| Plants with VAM | 0.21 | 10.80 | 0.82 |