| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | soil fertility | Japan | Utilization of traditional farming wisdom to maintain soil fertility has historical significance | 1 |
| 2 | soil quality | Japan | High-quality soil is often seen as suitable for intensive urban agriculture and rooftop gardening. | 1 |
| 3 | soil testing | Japan | Less common due to limited arable land and dense population | 1 |