Research Article
Applying Sewage Sludge to Eucalyptus grandis Plantations: Effects on Biomass Production and Nutrient Cycling through Litterfall
Table 2
Chemical analysis of wet and dry sewage sludge applied in the experiment.
| Determinations | Wet sludge | Dry sludge |
| pH (0.01 M CaCl2) | 7.3 | 6.5 | Bulk density | 1.03 g cm−3 | 0.97 g cm−3 | Moisture | 77% | 7.4% | Organic matter | 546 g kg−1 | 530.2 g kg−1 | Nitrogen (N) | 32 g kg-1 | 35 g kg−1 | C/N | 9.4 | 8.5 | Phosphorus (P) | 14 g kg−1 | 17 g kg−1 | Potassium (K) | 2.2 g kg−1 | 2.2 g kg−1 | Calcium (Ca) | 25 g kg−1 | 24 g kg−1 | Magnesium (Mg) | 4.9 g kg−1 | 3.9 g kg−1 | Sulfur (S) | 6.6 g kg−1 | 6.8 g kg−1 | Copper (Cu) | 0.6 g kg−1 | 0.7 g kg−1 | Manganese (Mn) | 0.19 g kg−1 | 0.3 g kg−1 | Zinc (Zn) | 2.4 g kg−1 | 3.2 g kg−1 | Iron (Fe) | 39 g kg−1 | 45 g kg−1 | Boron (B) | 0.009 g kg−1 | 0.002 g kg−1 | Sodium (Na) | 0.6 g kg−1 | 0.9 g kg−1 |
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