Agricultural ecosystems are significant contributors to greenhouse gas (GHG) emissions, yet they also offer mitigation potential through soil carbon sequestration and improved nutrient management. However, field-based assessments of major GHG emissions (e.g., CO2 and N2O) remain scarce in croplands in sub-Saharan African (SSA), limiting the development of region-specific mitigation strategies. Process-based crop-soil models can complement experimental studies by explicitly representing the biogeochemical processes controlling gas fluxes and by assessing the impacts of management practices. In this study, we applied the STICS (Simulateur mulTIdisciplinaire pour les Cultures Standard, (Brisson et al., 2003)) soil-crop model to simulate soil CO2 and N2O emissions at two experimental sites in Zimbabwe: the Domboshava Training Centre (DTC; abruptic lixisols), and the University of Zimbabwe Farm (UZF; xanthic ferralsols). The model represents key processes governing CO2 and N2O production from soil, including decomposition, nitrification, and denitrification, as well as their main environmental drivers (soil temperature, water-filled pore space, ammonium and nitrate availability). Model outputs were evaluated against field GHG measurements done between 2019 and 2021 at both sites across six treatments, each replicated four times: conventional tillage, conventional tillage with rotation, no-tillage, no-tillage with mulch, no-tillage with rotation, no-tillage with mulch and rotation. Soil CO2 emissions were simulated by combining STICS-simulated heterotrophic respiration with an independent autotrophic respiration module accounting for root respiration. After calibration, the model reproduced the main environmental drivers of soil CO2 and N2O emissions reasonably well. The simulated and measured soil CO2 emissions showed moderate agreement at the daily scale (R2 = 0.40, RMSE = 18.1 kg C ha-1 d-1, EF = 0.28) and strong agreement for cumulative emissions (R2 = 0.87, RMSE = 80