Soil | Voltage gradient and electrical current | Nutrient concentration | Highlights/main outcome | Reference |
Clay loam | 1 V/cm | 2 g/L NH4NO3 2 g/L KH2PO4 | Nitrate transport rate 19 cm/d/v phosphate results is not presented | [34] |
Coarse sand | 0.25 V/cm | 1 g/L NaNO3 | Nitrate transported 0.6 cm/h | [37] |
Clayey silt | 0.5 V/cm | 2 g/L NH4NO3 5 g/L KH2PO4 | Nitrate transport rate 5 cm/d/v Phosphate was not transported | [33] |
Kaolinite Lean clay (CL) | 0.85 V/cm | 3.2 g/L NH4OH 0.48 H2SO4 | 400 mg/kg NH4OH 200 mg/kg H2SO4 | [35] |
Fine sand | 15 μA/cm2 |
| Nitrate transported 250 mg/L | [38] |
Kaolinite | 123 μA/cm2 |
| Nitrate transported 250 mg/L | [38] |
Fine soil sandy-clay | 0.5 V/cm | 1 g/L NH4NO3 | Nitrate transported 1.5 mg/kg | [39] |
Kaolinite | 0.4 V/cm | 50 mg/L NO3-N 50 mg/L PO4-P | Nitrate transported Phosphorus was not transported | [40] |