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- Soil 1
- soil 1
- Soil carbon 1
- soil chemical characteristics 1
- soil chemicophysical properties 1
- soil classification 3
- soil compaction 1
- soil degradation 1
- Soil erosion 1
- soil fertility 4
- soil genesis 4
- soil improvement 1
- soil organic matter 1
- soil physical properties 1
- Soil plant covers 1
- Soil structure 1
- soil types 1
- Soil use change 1
- soil-climate 1
- soilless culture 2