Research Article
Effects of Biosolids at Varying Rates on Earthworms (Eisenia fetida) and Springtails (Folsomia candida)
Table 6
The maximum rates, t ha−1, at which Biosolids could be applied to grassland and cereal crops grown in soils of varying soil indices.
| | Biosolid 1 | Biosolid 2 | Biosolid 3 | Biosolid 4 | Biosolid 5 |
| | Nitrogen Winter wheat | | Index 1 (190 kg ha−1) | 5.2 | 4.2 | 4.9 | 4.9 | 6.2 | | Index 2 (140 kg ha−1) | 3.8 | 3.1 | 3.6 | 3.6 | 4.6 | | Index 3 (100 kg ha−1) | 2.7 | 2.2 | 2.6 | 2.6 | 3.3 | | Index 4 (60 kg ha−1) | 1.6 | 1.3 | 1.5 | 1.6 | 2.0 |
| | Nitrogen Spring barley | | Index 1 (135 kg ha−1) | 3.7 | 3.0 | 3.5 | 3.5 | 4.4 | | Index 2 (100 kg ha−1) | 2.7 | 2.2 | 2.6 | 2.6 | 3.3 | | Index 3 (75 kg ha−1) | 2.0 | 1.7 | 1.9 | 2.0 | 2.4 | | Index 4 (40 kg ha−1) | 1.1 | 0.9 | 1.0 | 1.0 | 1.3 |
| | Nitrogen Grassland normal and high stocking rates | | Normal (170 kg ha−1) | 4.6 | 3.7 | 4.3 | 4.4 | 5.5 |
| | Phosphorous Winter wheat and Spring barley | | Index 1 (45 kg ha−1) | 3.9 | 3.6 | 2.9 | 3.5 | 1.6 | | Index 2 (35 kg ha−1) | 3.0 | 2.8 | 2.2 | 2.7 | 1.2 | | Index 3 (25 kg ha−1) | 2.2 | 2.0 | 1.6 | 2.0 | 0.9 | | Index 4 (0 kg ha−1) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| | Phosphorous Grassland normal stocking rate | | Index 1 (39 kg ha−1) | 3.4 | 3.1 | 2.5 | 3.0 | 1.4 | | Index 2 (29 kg ha−1) | 2.5 | 2.3 | 1.9 | 2.3 | 1.0 | | Index 3 (19 kg ha−1) | 1.7 | 1.5 | 1.2 | 1.5 | 0.7 | | Index 4 (0 kg ha−1) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
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