Research Article
Energy-Based Evaluations on Eucalyptus Biomass Production
Table 5
Energy and emergy demand per class for the mechanized operations.
| | Mechanized operation | Energy demand per class (%) | | Fuel | Energy depreciation | Labor | Input | Total |
| | Harvesting | 51.0 | 2.2 | 1.0 | 2.4 | 56.7 | | Subsoiling + fertilizer + herbicide | 1.9 | 0.3 | 0.0 | 13.2 | 15.4 | | NPK (14-00-15) application (2nd year) | 0.4 | 0.1 | 0.0 | 8.6 | 9.1 | | NPK (14-00-15) application (3rd month) | 0.3 | 0.0 | 0.0 | 5.1 | 5.4 | | Limestone application | 0.3 | 0.0 | 0.0 | 4.6 | 4.9 | | KCl application (8th month) | 0.4 | 0.1 | 0.0 | 3.0 | 3.4 | | Others | 1.8 | 0.1 | 0.3 | 0.7 | 2.9 | | Planting | 0.2 | 0.1 | 0.1 | 1.9 | 2.2 |
| | Total | 56.3 | 2.9 | 1.4 | 39.5 | 100.0 |
| | Mechanized operation | Emergy demand per class (%) | | Fuel | Emergy depreciation | Labor | Input | Total |
| | Harvesting | 24.2 | 1.0 | 13.0 | 1.2 | 39.4 | | Limestone application | 0.2 | 0.0 | 0.1 | 22.0 | 22.3 | | Subsoiling + fertilizer + herbicide | 0.5 | 0.0 | 0.2 | 16.1 | 16.8 | | Others | 1.3 | 0.1 | 3.5 | 2.3 | 7.2 | | NPK (14-00-15) application (2nd year) | 0.2 | 0.0 | 0.1 | 4.7 | 5.0 | | NPK (14-00-15) application (3rd month) | 0.1 | 0.0 | 0.1 | 3.0 | 3.2 | | KCl application (8th month) | 0.2 | 0.0 | 0.1 | 2.8 | 3.1 | | Planting | 0.1 | 0.0 | 0.8 | 2.0 | 2.9 |
| | Total | 26.7 | 1.3 | 17.8 | 54.1 | 100.0 |
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