The subsequent evaluation of our study involved a field experiment conducted on a 17-year-old rambutan orchard soil in Phu Phung commune, Cho Lach district, Ben Tre province. The experiment evaluated the effects of three types of organic fertilizers—sugarcane compost, biogas residue, and vermicompost—which were applied at 18 kg per tree. To compare these treatments to a control treatment based on local farmers' practices, which used solely inorganic fertilizers (2.2 kg N, 1.5 kg P₂O₅, and 0.3 kg K₂O per tree), they were coupled with the required inorganic fertilizers (1.5 kg N, 1.0 kg P₂O₅, and 1.7 kg K₂O per tree). The findings demonstrated a considerable rise in CO₂ emissions from all organic fertilizer treatments but significantly reduced N₂O emissions (p < 0.05) compared to the farmers' practice. The global warming potential (GWP) of the farmers' practice ranged from 0.51 to 6.66 g.m-2.h-1 CO₂-equivalent, while the sugarcane compost treatment exhibited the lowest GWP, ranging from 0.22 to 4.02 g.m-2.h-1 CO₂-equivalent (p < 0.05). CO₂ emissions were strongly correlated with soil organic matter, soil temperature, and air temperature, with R² values of 0.82, 0.81, and 0.81, respectively. At the same time, N₂O emissions were closely linked to soil moisture, the water level in irrigation ditches, and the total amount of NH₄⁺ and NO₃⁻, with R² values of 0.85, 0.82, and 0.68, respectively. This study offers important new information about how organic fertilizers might reduce greenhouse gas emissions from Vietnam's rambutan production, contributing to more sustainable fruit production and climate change adaptation.