Table 3 Physicochemical properties of bone char and NPK fertilizers
Serial number | Property | Amount | |
|---|---|---|---|
Bone char | NPK | ||
1 | pH | 7.18 | 7.01 |
2 | Moisture content (%) | 1.86 | 1.0 |
3 | Density (g mL− 1) | 3.06 | 1.26 |
4 | Porosity (%) | 5.8 | 15 |
5 | Calcium ion (mg kg− 1) | 3740 | 0 |
6 | Total Nitrogen (%) | 3.1 | 15 |
7 | Potassium (%) | 98.2 | 15 |
8 | Phosphorous (%) | 0 | 15 |