Table 1 Physical-chemical parameters of the calcareous sandy soil
| pH-H2O | 7.71 |
| Organic matter (w/w%) | 0.50 |
| CaCO3 (w/w%) | 16.1 |
| AL-K2O (mg kg− 1) | 48 |
| AL-P2O5 (mg kg− 1) | 129 |
| Total N(w/w %) | 0.067 |
| NH4-N (mg kg− 1) | 3.2 |
| NO3-N (mg kg− 1) | 3.2 |
| CEC (Na meq/100 g) | 4.8 |
| Total arsenic (mg kg−1) | 3.5 |
| Water soluble arsenic (mg kg−1) | 0.023 |