Greenhouse effect, which contributes to the climate warning, is a mechanism that occurs in the lower atmosphere because of the presence of Greenhouse Gas (GHGs). Its reinforcement by the emissions of anthropogenic greenhouse gases has harmful consequences on the climate. Togo, a developing country, contributes more to this reinforcement by the emissions related the socio-economic activities due to the Agriculture, Forestry and Other Land Use (AFOLU) area. We carried out these inventories of Greenhouse Gas in accordance with the IPCC Guidelines for National Greenhouse Gas Inventories, version 2006, using CCNUCC software for the national inventories of GHGs. In 2004, basic year selected, based on the quality of the data, the Agriculture subsector emitted 2407.88 Gg CO₂-e of direct GHGs (CH₄, N₂O) and 252,72 Gg of GHGs precursors (NO_x, CO). In Togo, these emissions have a tendency to increase passing the aggregated emissions from 2085.89 Gg CO₂-e in 1990 to 2526.22 Gg CO₂-e in 2008. The assessment of key categories of national emissions gave the priority to the biomass of cropland remaining cropland followed by biomass of forest land converted to cropland. These estimations will enable policy makers to take right decisions in matters of mitigation and adaptation and use them as baselines for calculations of carbon credits.