Reduction in Greenhouse Gas Emission from Seedless Lime Cultivation Using Organic Fertilizer in a Province in Vietnam Mekong Delta Region

This study aimed to evaluate greenhouse gas (GHG) emissions from conventional cultivation (S1) of seedless lime (SL) fruit in Hau Giang province, the Mekong Delta region Vietnam. We adjusted scenarios by replacing 25% and 50% nitrogen chemical fertilizer with respective amounts N-based organic (S2 S3). Face-to-face interviews were conducted collect primary data. Life cycle assessment (LCA) methodology “cradle gate” approach was used estimate GHG emission based on functional unit one hectare growing area tonnage fresh weight. The factors agrochemicals, fertilizers, electricity, fuel production, internal combustion collected MiLCA software, IPCC reports, previous studies. S1, S2, S3 7590, 6703, 5884 kg-CO2 equivalent (CO2e) per 273.6, 240.3, 209.7 kg-CO2e for each commercial fruit, respectively. Changing fertilizer-based practice S1 S2 mitigated 887.0–1706 ha–1 (11.7–22.5%) 33.3–63.9 t–1 (12.2–25.6%), These results support a solution reduce fertilizers fertilizers.