Research Article
Phosphorus Sorption Characteristics of Luvisols and Nitisols in North Ethiopian Soils
Table 3
Correlation coefficient (r) for the linear relationships between the P adsorption parameters and selected soil physicochemical properties.
| | Sand | Clay | pH | Av. P | OC | Ex. Al | CEC | Xm | Kf | k | b | EPRL | EPRF |
| Sand | 1 | | | | | | | | | | | | | Clay | −0.95 | 1 | | | | | | | | | | | | pH | 0.86 | −0.88 | 1 | | | | | | | | | | | Av. P | 0.82 | −0.78 | 0.79 | 1 | | | | | | | | | | OC | 0.64 | −0.60 | 0.54 | 0.67 | 1 | | | | | | | | | Ex. Al | −0.95 | 0.98 | −0.91 | −0.72 | −0.54 | 1 | | | | | | | | CEC | −0.29 | 0.05 | −0.041 | −0.41 | −0.51 | 0.03 | 1 | | | | | | | Xm | −0.84 | 0.79 | −0.64 | −0.86 | −0.66 | 0.72 | 0.47 | 1 | | | | | | Kf | −0.85 | 0.92 | −0.94 | −0.87 | −0.58 | 0.90 | 0.02 | 0.72 | 1 | | | | | k | 63 | −0.52 | 0.35 | 0.61 | 0.88 | −0.44 | −0.61 | −0.71 | −0.40 | 1 | | | | b | 0.67 | −0.79 | 0.89 | 0.67 | 0.46 | −0.79 | 0.24 | −0.39 | −0.91 | 0.21 | 1 | | | EPRL | −0.74 | 0.65 | −0.82 | −0.86 | −0.44 | 0.69 | 0.41 | 0.68 | 0.79 | −0.29 | −0.60 | 1 | | EPRF | −0.87 | 0.89 | −0.82 | −0.95 | −0.70 | 0.83 | 0.28 | 0.87 | 0.93 | −0.59 | −0.76 | 0.77 | 1 |
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