| Composition | Fe (g L−1) | pH (−) | Zeta potential (mV) | Spray application |
---|---|---|---|---|---|
T1 | Control (dH2O) | 0 | 7.5 ± 0.4 |  | 1, 2, 3 |
T2 | Pheroids | 0 | 7.4 ± 0.6 | − 25 ± 3 | 1, 2, 3 |
T3 | FeSO4 | 0.4 | 5.3 ± 0.7 |  | 1, 2, 3 |
T4 | Pheroids + FeSO4 | 0.4 | 3.9 ± 1.2 | − 14 ± 2 | 1, 2, 3 |
T5 | FePO4 | 0.4 | 6.7 ± 0.8 | − 14 ± 3 | 1, 2, 3 |
T6 | Pheroids + FePO4 | 0.4 | 6.4 ± 0.9 | − 24 ± 4 | 1, 2, 3 |
T7 | FeSO4, pH adjusted | 0.4 | 4.5 ± 0.5 |  | 2, 3 |
T8 | FeSO4 + citrate | 0.4 | 4.2 ± 0.1 |  | 2, 3 |