Table 5. Dry Matter, P Content, and pH Obtained in a Soil System.
| sample | dry matter of tomato plants (g/pot) | P content in tomato plant (mg/pot) | pH of the solutions after 24 days | available P (mg/pot) |
|---|---|---|---|---|
| control | 0.71 ± 0.04 | 2.35 ± 0.25 | 6.12 ± 0.04 | 0.67 ± 0.05 |
| KH2PO4 | 1.82 ± 0.11 | 6.83 ± 0.89 | 6.37 ± 0.06 | 3.21 ± 0.15 |
| P-Mg/Al-LDH | 1.72 ± 0.16 | 6.68 ± 0.73 | 8.38 ± 0.05 | 6.78 ± 0.79 |
| P-Zn/Al-LDH | 1.38 ± 0.07 | 5.12 ± 0.47 | 7.11 ± 0.09 | 7.31 ± 0.81 |
| P-Mg-Zn/Al-LDH | 1.67 ± 0.13 | 6.65 ± 0.81 | 7.97 ± 0.05 | 6.87 ± 0.71 |
| LB | 0.82 ± 0.03 | 1.96 ± 0.18 | 7.01 ± 0.06 | 3.15 ± 0.11 |
| PS | 1.58 ± 0.14 | 6.48 ± 0.68 | 5.26 ± 0.18 | 3.36 ± 0.51 |