| N management approaches | N cost (BDT∙ha-1) | Gross income (BDT∙ha-1) | Net benefit (BDT∙ha-1) | ||
| BRRI dhan29 | Dhani gold | BRRI dhan29 | Dhani gold | ||
| BRRI recommended N (control) | 5400 | 129,800 | 121,000 | 124,400 | 115,600 |
| Soil analysis based N management | 5634 | 132,600 | 141,600 | 126,966 | 135,966 |
| N management based on agro-ecological zone | 5868 | 125,800 | 141,000 | 119,932 | 135,135 |
| 20 kg∙N∙ha−1 at ≤35 SPAD value | 2340 | 133,000 | 103,800 | 130,660 | 101,460 |
| 30 kg∙N∙ha−1 at ≤35 SPAD value | 3510 | 130,600 | 139,600 | 127,090 | 136,090 |
| 20 kg∙N∙ha−1 at ≤3.0 LCC value | 4680 | 146,800 | 137,400 | 142,120 | 132,720 |
| 30 kg∙N∙ha−1 at ≤3.0 LCC value | 7038 | 134,400 | 145,000 | 127,362 | 137,962 |
| Urea super granule | 3132 | 124,800 | 137,800 | 121,668 | 134,668 |