| Study site | Soil Sample | Biochar | |||
| Egerton | Mau-Narok | ||||
| Soil depth (cm) | 0 - 15 | 15 - 30 | 0 - 15 | 15 - 30 |
|
| Total nitrogen (gkg−1) | 0.24 | 0.24 | 0.26 | 0.24 | 0.35 |
| Phosphorus (mg∙kg−1) | 18.50 | 22.00 | 30.70 | 27.60 | 0.08 |
| Potassium (Cmol∙kg−1) | 1.80 | 1.40 | 1.36 | 0.56 | 0.73 |
| Calcium (Cmol∙kg−1) | 9.00 | 10.20 | 4.60 | 3.80 | 1.19 |
| Magnesium (Cmol∙kg−1) | 5.02 | 4.85 | 3.36 | 3.26 | 0.22 |
| Sodium (Cmol∙kg−1) | 0.20 | 0.30 | 0.90 | 0.50 | -- |
| Cation exchange capacity (Cmol∙kg−1) | 29.00 | 32.00 | 24.30 | 25.70 | -- |
| Soil pH-H2O (1:1) | 6.01 | 6.15 | 5.00 | 5.20 | 10.2 |
| Total Org. Carbon (g∙kg−1) | 2.59 | 2.60 | 2.87 | 2.59 | -- |
| Acid phosphomonoesterases (mM pNP × kg−1 × h−1) | 100 | -- | 98 | -- | -- |
| Alkaline phosphomonoesterases (mM pNP × kg−1 × h−1) | 87 | -- | 102 | -- | -- |
| Sand % | 58.00 | 60.00 | 56.00 | 56.00 | -- |
| Silt % | 14.00 | 12.00 | 14.00 | 14.00 | -- |
| Clay % | 28.00 | 28.00 | 30.00 | 30.00 | -- |
| Texture class | SCL | SCL | SCL | SCL | -- |