| Treatment | Season 1 | Season 2 | Season 3 |
| Control | |||
| 0 | 0.89a | 0.84a | 0.92a |
| SM | |||
| 60 | 0.94a | 0.88a | 0.98a |
| 120 | 0.88a | 0.84a | 0.93a |
| 180 | 0.91a | 0.86a | 0.96a |
| 240 | 0.87a | 0.83a | 0.93a |
| Enriched 4:1 | |||
| 60 | 0.89a | 0.85a | 0.94a |
| 120 | 0.85a | 0.81a | 0.90a |
| 180 | 0.95a | 0.89a | 1.00a |
| 240 | 0.90a | 0.84a | 0.95a |
| Enriched 8:1 | |||
| 60 | 0.91a | 0.87a | 0.95a |
| 120 | 0.89a | 0.83a | 0.96a |
| 180 | 0.93a | 0.88a | 1.02a |
| 240 | 0.85a | 0.83a | 0.98a |
| NPK 180 | 0.87a | 0.84a | 0.91a |
| p Value | 0.22 | 0.446 | 0.255 |
| DMRT (p < 0.05) | NS | NS | NS |