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Nitrogen losses as ammonia volatilization as affected by nitrogen application with and without biochar and/or urease inhibitor.
| Treatments | NH3-N losses (kg ha−1) | N lost as NH3 (% of the applied N) | % Changes in NH3 relative to urea |
|---|---|---|---|
| Control | 0.7 ± 0.12a | – | – |
| Urea | 19.7 ± 0.12e | 12.7 | – |
| Biochar | 4.5 ± 0.12b | 2.5 | – |
| Urea + biochar | 14.4 ± 0.12d | 9.1 | − 27 |
| Urea + biochar + UI | 6.2 ± 0.12c | 3.7 | − 69 |
Means followed by same letter(s) within columns are statistically non-significant (p < 0.05).
