| Rice growing seasons (A) | Treatments (B) Recommend NPKS fertilizers with soil amendments | Grain yield (kg·ha−1) | Nutrients uptake by rice plant (kg/ha/season) | Gross return (Tk·ha−1) | Total variable cost (Tk·ha−1) | BCR | Cumulative CH4 flux (kg ha−1 season−1) | GWP (kg CO2 eq.ha−1) | GHGI (kg CH4/kg grain yield) | ||
| N | P | K | |||||||||
| Dry season (Boro Rice cultivation) | T1: (No NPKS, No amendments) | 1000 | 36 | 8 | 20 | 49,000 | 55,000 | 0.89 | 171.0 | 4300 | 0.171 |
| T2: NPKS (100%) + No amendments | 4200 | 105 | 12 | 95 | 105,000 | 83,500 | 1.25 | 180.0 | 4500 | 0.042 | |
| T3: NPKS (75% RFD) + Trichocompost | 4400 | 135 | 15 | 105 | 109,500 | 85,500 | 1.28 | 175.0 | 4375 | 0.038 | |
| T4: NPKS (75% RFD) + Tea waste compost | 4300 | 130 | 10 | 108 | 102,000 | 84,000 | 1.21 | 163.0 | 4050 | 0.035 | |
| T5: NPKS (75% RFD) + Azolla compost | 4700 | 150 | 18 | 126 | 128,500 | 87,000 | 1.47 | 185.0 | 4725 | 0.039 | |
| T6: NPKS (75% RFD) + Phosphogypsum (PG) | 4600 | 146 | 16 | 135 | 125,500 | 93,500 | 1.34 | 155.0 | 3875 | 0.031 | |
| T7: NPKS (75%) + Trichocompost + Proline | 4500 | 142 | 17 | 128 | 127,000 | 97,500 | 1.30 | 169.0 | 4200 | 0.035 | |
| T8: NPKS (75%) + Tea waste compost + Proline | 4500 | 150 | 16 | 125 | 120,000 | 95,000 | 1.26 | 145.0 | 3650 | 0.032 | |
| T9: NPKS (75% RFD) + Azolla compost + Proline | 4900 | 164 | 22 | 140 | 136,000 | 97,500 | 1.39 | 173.0 | 4350 | 0.035 | |
| T10: NPKS (75% RFD) +PG + Proline | 4800 | 160 | 24 | 138 | 128,000 | 98,000 | 1.30 | 143.0 | 3575 | 0.029 | |
| Wet season (Rainfed aman rice cultivation) | T1: (No NPKS, No amendments) | 1200 | 40 | 10 | 22 | 56,500 | 53,500 | 1.05 | 151.0 | 3775 | 0.125 |
| T2: NPKS (100%) + No amendments | 3900 | 95 | 14 | 78 | 110,000 | 86,000 | 1.28 | 169.0 | 4225 | 0.043 | |
| T3: NPKS(75% RFD) + Trichocompost | 4100 | 110 | 17 | 84 | 120,500 | 90,500 | 1.33 | 160.0 | 4000 | 0.039 | |
| T4: NPKS (75% RFD) + Tea waste compost | 4000 | 108 | 16 | 85 | 108,500 | 89,500 | 1.21 | 145.0 | 3625 | 0.038 | |
| T5: NPKS (75% RFD) +Azolla compost | 4400 | 118 | 18 | 94 | 124,500 | 92,500 | 1.34 | 173.0 | 4325 | 0.038 | |
| T6: NPKS (75% RFD) + Phosphogypsum (PG) | 4300 | 110 | 17 | 90 | 120,500 | 93,000 | 1.29 | 141.0 | 3525 | 0.032 | |
| T7: NPKS (75%) + Trichocompost + Proline | 4200 | 116 | 18 | 95 | 118,000 | 95,000 | 1.24 | 155.0 | 3875 | 0.037 | |
| T8: NPKS (75%) + Tea waste compost + Proline | 4300 | 115 | 16 | 96 | 115,000 | 94,000 | 1.22 | 135.0 | 3387 | 0.034 | |
| T9: NPKS (75% RFD) + Azolla compost + Proline | 4500 | 124 | 18 | 102 | 127,000 | 95,000 | 1.33 | 159.0 | 4145 | 0.035 | |
| T10: NPKS (75% RFD) + PG + Proline | 4500 | 118 | 17 | 98 | 125,000 | 97,000 | 1.28 | 130.0 | 3262 | 0.029 | |
| ANOVA | A | ns | * | ns | * | * | * | * | * | * | * |
| B | * | * | * | * | ** | ** | * | * | ** | * | |
| A × B | ns | * | * | * | * | * | * | * | * | * | |