| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | potassium chloride | agriculture | Used as a fertilizer to supply potassium to plants | 1 |
| 2 | potassium ion | agricultural | A crucial nutrient for plant growth and development | 1 |
| 3 | potassium ion | agriculture | Used as a fertilizer to promote plant growth and crop yield | 1 |
| 4 | potassium nitrate | agricultural | Used as a fertilizer to provide nitrogen and potassium to plants | 1 |