Table 1.
Physicochemical properties of the control and heated soil samples
| Parameter | Unit | Control | Heated at 60 °C | Heated at 100 °C |
|---|---|---|---|---|
| Clay | % | 55.2 | - | - |
| Silt | % | 3.2 | - | - |
| Total sand | % | 41.6 | - | - |
| Organic Matter | g/dm³ | 7.1 | 6.8 | 7.1 |
| pH | - | 5.84 | 5.97 | 5.87 |
| P | mg/dm³ | < 7 | < 7 | < 7 |
| Ca | mmolc/dm² | 20.6 | 20.4 | 20.1 |
| Mg | mmolc/dm³ | 3.2 | 3.1 | 3.0 |
| K | mmolc/dm³ | 1.63 | 1.74 | 1.83 |
| H + Al | mmolc/dm² | 15.8 | 15.8 | 15.7 |
| SB | mmol/dm³ | 25.3 | 25.2 | 24.9 |
| CEC | mmol/dm³ | 41.1 | 41.0 | 40.6 |
| BS | % | 62 | 62 | 61 |
| B | mg/dm³ | 1.04 | 0.93 | 0.98 |
| Cu | mg/dm³ | 1.5 | 1.4 | 5.4 |
| Fe | mg/dm³ | 6.2 | 5.4 | 5.0 |
| Mn | mg/dm³ | 4 | 3.8 | 3.7 |
| Na | mg/dm³ | 33 | 31 | 32 |
| Si | mg/kg | 9.7 | 9.0 | 8.9 |