Nutrients | Trichocompost | Tea waste compost | Azolla compost | Phosphogypsum |
pH (1:5 H2O) | 8.6 | 6.9 | 7.5 | 3.5 |
Organic C (%) | 24 | 27 | 44 | - |
Total N (%) | 1.1 | 1.6 | 4.8 | - |
C/N | 21 | 17 | 9 | - |
P2O5 (%) | 0.87 | 0.75 | 0.50 | 0.83 |
K2O %) | 1.2 | 1.1 | 3.5 |
|
S (%) | 1.1 | 9.7 | 1.7 | 36 |
Mn (%) | 0.86 | 0.9 | 0.16 | 0.97 |
Fe (ppm) | 98 | 270 | 2600 | 350 |
Ca (%) | 0.35 | 0.23 | 0.7 | 30 |