Open Access
Table 6.
Balance of macronutrients
| Primary Tillage Practice | Input | Consumption | Balance ±,kg/ha | |||||
|---|---|---|---|---|---|---|---|---|
| Input with Seeds, kg/ha | Input with Plant Residues, kg/ha | Input with Straw, kg/ha | Ʃ PlantResidues+ Straw, kg/ha | Conversion to % of Use from Crop‐Root Residues, kg/ha (15%) | Total Input,,kg/ha | Removal by Grain Harvest, kg/ha | ||
| Nitrogen | ||||||||
| Plowing | 5.2 | 19.8 | 34.7 | 54.5 | 8.2 | 13.4 | 97.2 | ‐83.8 |
| Combined tillage | 5.2 | 5.6 | 32.5 | 38.1 | 5.7 | 10.9 | 76.0 | ‐65.1 |
| Surface tillage | 5.2 | 16.5 | 21.3 | 37.8 | 4.2 | 9.4 | 81.8 | ‐72.4 |
| Direct sowing | 5.2 | 18.5 | 20.2 | 38.7 | 5.8 | 11.0 | 63.9 | ‐52.9 |
| Phosphorus | ||||||||
| Plowing | 2.1 | 16.0 | 40.5 | 56.5 | 8.5 | 10.6 | 40.5 | ‐29.9 |
| Combinedtillage | 2.1 | 8.2 | 33.6 | 41.8 | 6.3 | 8.4 | 33.6 | ‐25.2 |
| Surface tillage | 2.1 | 10.8 | 28.1 | 38.9 | 5.8 | 7.9 | 28.1 | ‐20.2 |
| Direct sowing | 2.1 | 7.2 | 27.1 | 34.3 | 5.1 | 7.2 | 27.1 | ‐19.9 |
| Potassium | ||||||||
| Plowing | 1.4 | 41.4 | 68.2 | 109.6 | 16.4 | 17.8 | 26.4 | ‐8.6 |
| Combinedtillage | 1.4 | 33.4 | 56.8 | 90.2 | 13.5 | 14.9 | 21.2 | ‐7.7 |
| Surface tillage | 1.4 | 34.8 | 34.6 | 69.4 | 10.4 | 11.8 | 18.8 | ‐8.4 |
| Direct sowing | 1.4 | 46.3 | 29.9 | 76.2 | 11.4 | 12.8 | 17.3 | ‐5.9 |
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