Table 4.
Comparison of review data of compost standards based on the Indonesian standards (SNI 19-7030-2004) and Minister of Agriculture (Regulation No. 261/KPTS/SR.310/M/4/2019).
| Parameter | SNI 19-7030-2004 | Permentan no 261/KPTS/SR.310/M/4//2019 | Review results |
|---|---|---|---|
| C-organic (%) | 9.80–32 | min 15 | — |
| C/N ratio | 10–20 | ≤25 | 23.42 |
| pH | 6.80–7.49 | 4–9 | 7.41 |
| Temperature (°C) | Groundwater temperature | — | Variation (in standard) |
| Water content (%) | Max. 50 | 8–20 | — |
| Macroelements: | — | ||
| N-total (%) | Min. 0.4 | Total = Min. 2 | — |
| Phosphorus (%) | Min. 0.10 | 0.99% | |
| Potassium (%) | Min. 0.20 | 4.14% | |
| Heavy metal (ppm): | |||
| As | — | Max. 10 | — |
| Hg | Max. 0.8 | Max. 1 | — |
| Pb | Max. 150 | Max. 50 | — |
| Cd | Max. 3 | Max. 2 | — |
| Cr | Max. 210 | Max. 180 | — |
| Co | Max. 34 | — | — |
| Cu | Max. 100 | — | 52.50 ppm |
| Ni | Max. 62 | Max. 50 | — |
| Se | Max. 2 | — | — |
| Microelements: | |||
| Ca | Max. 25.50% | — | 1.29% |
| Mg | Max. 0.60% | — | 0.7% |
| Fe total | Max. 2.00% | Max. 15000 (ppm) | 0.78% |
| Fe available | Max. 500 (ppm) | ||
| Mn | Max. 0.10% | — | 115.44 ppm |
| Zn | Max. 500 (ppm) | Max. 5000 (ppm) | 442.18 ppm |
| Al | Max. 2.20% | — | — |