| by decaying matter | 5 | other |
| naturally | 4 | manner |
| by bacteria | 4 | other |
| ammonia → be found in → soil | 5 |
| ammonia → be applied to → the soil | 4 |
| ammonia → be produced in → soil | 4 |
| ammonia → be incorporated into → the soil | 3 |
| negative | neutral | positive |
| 0.404 | 0.550 | 0.046 |
| Raw frequency | 16 |
| Normalized frequency | 0.376 |
| Modifier score | 0.600 |
| Perplexity | 23.099 |