Table 1. Summary of life cycle analysis for greenhouse gas emissions associated with the manufacture and transportation of foliar insecticides against the soybean aphid in the United States.
| Soybean aphid insecticide (relative use) | Corresponding compound | Total energy inputs (MJ/kg)a | kg CO2e/ kg A.I.: Manufacture | kg CO2e/kg A.I.: Transportation | Application rate (kg [A.I.]/Ha) | Kg CO2e/Ha: Manufacture | kg CO2 e/ha: Transport | kg CO2e/Ha: Manufacture + Transport |
|---|---|---|---|---|---|---|---|---|
| Lambda cyhalothrin (0.47) | Cypermethrin | 580.000 | 65.165 | 0.082 | 0.022 | 1.434 | 0.002 | 1.436 |
| Esfenvalerate (0.15) | Cypermethrin | 580.000 | 65.165 | 0.082 | 0.045 | 2.934 | 0.004 | 2.938 |
| Chlorpyrifos (0.38) | Methyl Parathion | 160.000 | 18.198 | 0.082 | 0.841 | 15.306 | 0.069 | 15.376 |
| Totals weighted by relative use | 420.400 | 47.340 | 0.082 | 6.931 | 0.028 | 6.958 |
a from Green (1987).
‘Corresponding compound’ refers to the insecticides most closely related to ones used against soybean aphid for which Green (1987) calculated energy inputs (see text).