Nitrogen Sources
| Source Material | Percent Nitrogen (N) |
| Anhydrous ammonia | 82 |
| Aqua ammonia | 20-25 |
| Ammonium nitrate | 33.5-34 |
| Ammonium nitrate-sulfate | 26 |
| Ammonium nitrate/lime | 20.5 |
| Ammonium sulfate | 21 |
| Urea-ammonium nitrate solution (UAN) | 28-32 |
| Ammonium chloride | 26 |
| Urea | 46 |
| Monoammonium phosphate (MAP) | 10-11 |
| Diammonium phosphate (DAP) | 18 |
| Sodium nitrate | 16 |
| Potassium nitrate | 13 |
| Calcium nitrate | 15.5 |
| Sulfur-coated urea | 39 |
| Urea-formaldehyde | 38 |
Source - Potash and Phosphate Institute |
