Research Article
N Mineralisation from Bioresources Incubated at 12.5°C
Table 1
Chemical characteristics of bioresources and soil.
| | Units (DMB) | LAB | ADB | PM | PSW | Soil |
| Moisture | % (w/w) | 70.1 | 80.3 | 55.1 | 10.8 | 20.0 |
pH (1 : 5 H20) | | 13 | 6.6 | 7.3 | 5.5 | 7.3 | Organic C | % (w/w) | 15.0 | 13.6 | 26.1 | 34.6 | 2.0 | Soluble | mg/kg | 1 300 | 4 300 | 8.6 | 46 | <1.0 | Soluble | mg/kg | 1.7 | 1.2 | <1.0 | 20 | 7.9 | Soluble | mg/kg | 1.2 | <1.0 | 1.6 | 6 | <1.0 | Total N | % (w/w) | 3.0 | 4.6 | 1.6 | 5.1 | 0.15 |
Total | kg/ha | 225 | 345 | 120 | 383 | | Total P | mg/kg | 18 000 | 11 000 | 9 300 | 15 000 | 340 | Ca | mg/kg | 248 000 | 20 700 | 89 400 | 23 600 | 7 790 | C : N ratio† | | 5 : 1 | 3 : 1 | 16 : 1 | 7 : 1 | 13 : 1 |
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Total : total N in application rate (AR) 7.5 dry solid tonnes/ha of organic amendment; C : N ratio† assumes total C ≈ organic C.
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