Table 4: Sorption coefficients for P on Immokalee and Candler fine sand using three electrolytes.
Soil | Depth (cm) | Supporting electrolyte | ‡KD (L kg-1) |
Immokalee | 0-15 | 0.01 M KCl | 0.53 ± 0.11 |
Immokalee | 15-30 | 0.01 M KCl | 0.50 ± 0.19 |
Candler | 0-15 | 0.01 M KCl | 2.87 ± 0.43 |
Candler | 15-30 | 0.01 M KCl | 3.79 ± 0.87 |
Immokalee | 0-15 | 0.005 M CaCl2 | 0.75 ± 0.13 |
Immokalee | 15-30 | 0.005 M CaCl2 | 0.74 ± 0.32 |
Candler | 0-15 | 0.005 M CaCl2 | 3.46 ± 0.65 |
Candler | 15-30 | 0.005 M CaCl2 | 4.43 ± 0.50 |
Immokalee | 0-15 | Fertilizer mixture | 0.45 ± 0.10 |
Immokalee | 15-30 | Fertilizer mixture | 0.43 ± 0.20 |
Candler | 0-15 | Fertilizer mixture | 1.73 ± 0.15 |
Candler | 15-30 | Fertilizer mixture | 2.05 ± 0.89 |
Statistics | |||
Soil type (S) | *** | ||
Electrolyte (E) | *** | ||
Depth (D) | *** | ||
S × D | *** | ||
S × E | *** | ||
E × D | *** | ||
E × S × D | *** |
‡KD: Linearized KD using Equation 12 presented as mean ± one standard deviation of 3 replications and a Cmax of 15 mg L-1; ***: 'Significant at 0.001 probability level'.