Table 4.
Current formulations used on some Australasian mushroom composting yards and typical Phase I compost analyses. All sites use wheat straw at 54–61% w/w of the raw materials and add gypsum at 25–30 kg/t compost
| Parameter | Compost yard | |||||
|---|---|---|---|---|---|---|
| A | B | C | D | E | F | |
| Horse manure | 0 | 0 | ✓ | 0 | 0 | 0 |
| Poultry manure, laying | ✓ | ✓ | ✓ | ✓ | 0 | 0 |
| Poultry manure, broiler | 0 | ✓ | ✓ | 0 | ✓ | ✓ |
| Feather meal | 0 | 0 | ✓ | 0 | 0 | 0 |
| Canola meal | 0 | ✓ | 0 | 0 | 0 | ✓ |
| Cotton trash | 0 | ✓ | 0 | 0 | 0 | 0 |
| Cottonseed meal | 0 | 0 | ✓ | 0 | 0 | 0 |
| Soya bean meal | ✓ | 0 | 0 | 0 | 0 | 0 |
| Urea | ✓ | 0 | ✓ | 0 | ✓ | 0 |
| Ammonium sulphate | 0 | 0 | 0 | ✓ | 0 | 0 |
| Recycled water, % | 50 | ✓ | 100 | 50 | ✓ | 90 |
| Dry matter, % w/w | 27.0 | 26.0 | 24.6 | 27.0 | 25.0 | 26.2 |
| N (g kg−1dry matter) | 17.0 | 18.5 | 22.4 | 18.0 | 22.0 | 17.6 |
| NH4+ (g kg−1dry matter) | n.d. | 4.0 | 4.0 | 2.0 | 4.5 | 1.8 |
| Ash (g kg−1dry matter) | 272.4 | n.d. | 193.9 | 225.0 | n.d. | 103.0 |
| pH | 8.05 | n.d. | 8.26 | 8.25 | 8.3 | 8.1 |
n.d. not determined