Characteristics of Common Turfgrass N Sources
Classification, burn potential, leaching potential, low temperature response and residual effect on common turfgrass N sources |
| Fertilizer Source |
N content % |
Leaching Potential |
Burn Potential |
Low Temp-Response |
Residual Effect |
| Inorganic |
|
|
|
|
| Ammonium nitrate |
33-34 |
High |
High |
Rapid |
Short |
| Calcium nitrate |
16 |
High |
High |
Rapid |
Short |
| Ammonium sulfate |
21 |
High |
High |
Rapid |
Short |
| Organic-Natural |
| Activated sewage sludge |
6 |
Very low |
Very low |
Very low |
Long |
| Manures |
03-10 |
Very low |
Very low |
Very low |
Long |
| Other Natural Products |
03-10 |
Very low |
Very low |
Very low |
Long |
| Synthetic |
| Urea |
45-46 |
Moderate |
High |
Rapid |
Short |
| Urea solutions |
Dec-14 |
Moderate |
High |
Rapid |
Short |
| Sulfur coated urea |
12-14 |
Low |
Low |
Moderate |
Moderate |
| Resin coated urea |
24-35 |
Low |
Low |
Moderate |
Long |
| Isobutylidene diurea (IBDU) |
30-31 |
Mod.Low |
Low |
Moderate |
Moderate |
| Methylene ureas and Ureaformaldehyde* |
38 |
Low |
Low |
Low |
Mod.Long to Long |
| *some products may contain urea in addition to the ureaformaldehyde component |
|
