Table 3.
Greenhouse gas (GHG) emission factors for different agricultural inputs.
| Input | Emission factor (kg CO2 eq. per unit of input) | Source |
|---|---|---|
| Diesel fuel | 2.68 l−1 | US-EIA (2011): www.eia.gov/oiaf/1605/emission_factors.html (Fuel Emission Factors) |
| Electricity | 0.994 kW h−1 | |
| N (kg) | 4.95 | CFT (2014) |
| P (kg) | 0.73 | CFT (2014) |
| K (kg) | 0.545 | CFT (2014) |
| Average pesticide | 26.63 kg−1 a.i. | Audsley et al. (2009) |
| Average herbicide | 24.20 kg−1 a.i. | Grassini and Cassman (2012) |
| Emission factor for N2O emissions (kg N applied) for rice | 0.51 | Padre et al. (2016) |
| Emission factor for N2O emissions (kg N applied) for wheat | 0.33 | Padre et al. (2016) |
| Emission factor for N2O emissions (kg N applied) for kharif maize | 1.95 | Padre et al. (2016) |
| Methane emission factor for puddled transplanted rice (kg season−1) | 12.8 | Padre et al. (2016) |
| Methane emission factor for dry-seeded rice (kg season−1) | 5.6 | Padre et al. (2016) |