Carbon Efficiency Ratio of Eggplant Production in Zamboanga City, Philippines

The research study entitled Carbon Efficiency Ratio of Eggplant Production was conducted in Zamboanga City, Philippines, and aims to estimate the input-output carbon of eggplant production and to determine its carbon efficiency ratio. The eggplant production obtained the input carbon of 3,698.91CO2e kg-1 derived from the total energy inputs (TEI), the total energy inputs are the sum of ‘direct energy input (DEI), indirect energy input (IEI)' and embedded energy input (EEI) was converted into Liter Diesel Oil Equivalent (LDOE), 1.0 LDOE were equal to 11.414 Mcal unit-1 and multiplied by 3.96 kg CO2e emission to obtain the carbon dioxide emission. The crop establishment activity obtained the highest input carbon of 58.35% potential share of carbon emission, followed by pre-land preparation of 38.46% potential share, while harvest and pre-harvest obtain 2.13%, among the entire activities, the crop management activity obtained the lowest input carbon of 1.06% potential share. The eggplant production has a carbon output of 4,081.99 CO2e kg-1 . The entire eggplant production system obtained a net carbon of 463.81 CO2e kg-1 mainly derived from output carbon less input carbon, obtaining the carbon efficiency (ratio) was derived from output carbon divided by input carbon that gives the result of 1.13. The carbon efficiency ratio was related to the average yield of eggplant. This shows that the existing cultural practices of eggplant production in the city are carbon neutral whereas it does not emit carbon to the atmosphere beyond the output carbon produced from the production of eggplant. It implies that the amount of carbon emitted is the amount of carbon sequestered.