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| Experiment with Peat cover (slurry sampled in summer) | Experiment with polystyrene balls (slurry sampled in autumn)* | Slurry covered with synthetic sheet | |
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| Winter | Summer |
| TAN(gN∙kg−1) | 2.3 | 3.3 | 2.2 | 2.4 |
| TKN (gN∙kg−1) | 3.8 | 4.9 | 2.4 | 4.7 |
| DM (g∙kg−1) | 53 | 66 | 77 | 71 |
| OM (g∙kg−1) | 38 | 49 | 29 | 51 |
| pH | 7.6 | 7.9 | 8.2 | 7.6 |