Publication - Research and analysis
Arable Farmer-led Group: climate change evidence
A summary of existing evidence around the arable sector, including greenhouse gas emissions produced by the Rural and Environment Science and Analytical Services (RESAS) division.
Annex C – GHG Inventory Assumptions
Sources in the inventory have been attributed based on the following percentages:
| IPCC | SourceName | Crops | Dairy | Deer | Goats | Horses | Beef | Pigs | Sheep |
|---|---|---|---|---|---|---|---|---|---|
| 3H_Urea application | Fertiliser application | 80% | 20% | 10% | |||||
| 1A4cii_Agriculture/Forestry/Fishing:Off-road | Agriculture - mobile machinery | 60% | 30% | 20% | |||||
| 3A4_Enteric_Fermentation_other_livestock | Enteric | 7% | 1% | 67% | 25% | ||||
| 3D11_Inorganic_nitrogen_fertilizers | Grass - Direct | 30% | 60% | 10% | |||||
| 3D14_Crop_residues | Grass - Direct | 30% | 60% | 10% | |||||
| 3G1_Liming - limestone | Liming | 50% | 15% | 30% | 5% | ||||
| 3G2_Liming - dolomite | Liming | 50% | 15% | 30% | 5% |
This results in the following estimates of GHG emissions for agriculture in 2018:
| Agricultural Sector |
Emissions in Inventory | Attributed based on expert input | Proportion attributed |
|---|---|---|---|
| MtCO2e | MtCO2e | % | |
| Beef | 2.97 | 0.47 | 16 |
| Arable/Crops | 1.02 | 0.59 | 58 |
| Dairy | 0.86 | 0.31 | 36 |
| Sheep | 0.99 | 0.05 | 5 |
| Other livestock | 0.20 | .. | .. |
| Uncategorised | 0.02 | .. | .. |
| IPCC | Sector | Attribution | MtCO2e |
|---|---|---|---|
| 3D11 Inorganic N Fertilizers | Arable | Direct | 0.218 |
| 3D14 Crop Residues | Arable | Direct | 0.161 |
| 3D21 Atmospheric Deposition | Arable | Direct | 0.009 |
| 3D22 Nitrogen Leaching and Run-off | Arable | Direct | 0.105 |
| 3D22 Nitrogen Leaching and Run-off | Crops | Direct | 0.060 |
| 1A4ci_Agriculture/Forestry/Fishing:Stationary | Crops | Direct | 0.036 |
| 1A4cii_Agriculture/Forestry/Fishing:Off-road | Crops | Attributed | 0.462 |
| 2D1_Lubricant_Use | Crops | Direct | 0.000 |
| 3D15 Mineralisation/immobilisation associated with loss/gain of soil organic matter | Crops | Direct | 0.195 |
| 3D16 Cultivation of Organic soils | Crops | Direct | 0.239 |
| 3G1_Liming - limestone | Crops | Attributed | 0.059 |
| 3G2_Liming - dolomite | Crops | Attributed | 0.049 |
| 3H Urea Application | Crops | Attributed | 0.020 |
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