Productivity of Soybean under Projected Climate Change in a Semi-Arid Region of West Africa: Sensitivity of Current Production System

The production of soybean is gaining more attention in West Africa. In light projected changes climate, there a need to assess the potential impacts on yield productivity and variability among farmers. An evaluated GROPGRO module Decision Support System for Agro-technological Transfer (DSSAT) was used simulate under both historical (1980–2009) climate scenarios from multiple general circulation models (GCMs) two representative concentration pathways (RCPs): 4.5 8.5. Agronomic data 90 farms, as well soil profile data, were also impact assessment. Climate change leads reduction (3% 13.5% across GCMs RCPs) Northern Ghana. However, elevated atmospheric carbon dioxide has offset negative impact, resulting increased (14.8% 31.3% productivity. varied widely amongst farms (with relative standard deviation (RSD) ranging between 17% 35%) years (RSD 10% 15%). Diversity management practices, differences soils, explained heterogeneity farms. Variability higher than that years. strategic cultural practices provides an option enhance resilience smallholders.