Emission inputs and scaling factors considered in the calculation of GHG emissions for maize planting
| Emission input | Emission or scaling factor | Reference |
|---|---|---|
| Upstream manufacturing and transporting (CO2) | ||
| Maize seed | 3.85 kg CO2 eq kg−1 | West and Marland (2002) |
| N fertiliser | 6.38 kg CO2 eq kg−1 | West and Marland (2002) |
| P fertiliser | 0.61 kg CO2 eq kg−1 | West and Marland (2002) |
| K fertiliser | 0.44 kg CO2 eq kg−1 | West and Marland (2002) |
| Insecticide | 18.10 kg CO2 eq kg−1 | West and Marland (2002) |
| Herbicide | 19 kg CO2 eq kg−1 | West and Marland (2002) |
| Steriliser | 17.2 kg CO2 eq kg−1 | West and Marland (2002) |
| Film | 2.50 kg CO2 eq kg−1 | Penman et al. (2006) |
| Cultivation process (CO2, N2O) | ||
| Diesel | 3.45 kg CO2 eq kg−1 | Lal (2004) |
| Gasoline | 3.12 kg CO2 eq kg−1 | Lal (2004) |
| Electricity | 0.92 kg CO2 eq kg−1 | Penman et al. (2006) |
| N fertiliser | 1.20% | Shin et al. (2017) |
| Manure compost | 0.60% | Shin et al. (2017) |
| Carbon sequestration (C) | ||
| Manure compost | 3.43% | Shin et al. (2017) |
| Emission input | Emission or scaling factor | Reference |
|---|---|---|
| Maize seed | 3.85 | |
| N fertiliser | 6.38 | |
| P fertiliser | 0.61 | |
| K fertiliser | 0.44 | |
| Insecticide | 18.10 | |
| Herbicide | 19 | |
| Steriliser | 17.2 | |
| Film | 2.50 | |
| Diesel | 3.45 | |
| Gasoline | 3.12 | |
| Electricity | 0.92 | |
| N fertiliser | 1.20% | |
| Manure compost | 0.60% | |
| Manure compost | 3.43% | |