Assessing the relative sustainability of smallholder farming systems in Ethiopian highlands

Global population growth will require substantial increases in agricultural production worldwide. Yet, despite growing concern about the environmental and social impacts of increased agricultural productivity, no consensus exists on the appropriate method for assessing the appropriate tradeoffs for sustainability. To address this need, this paper proposes the use of Data Envelope Analysis to create an index that permits assessment of the relative sustainability of smallholder farms in a given region, with minimal external interpretation about how individual farmers weight tradeoffs on their own farms. The method is applied to the Ethiopian highlands to explore the determinants of economic, social and environmental sustainability in the region's agricultural sector. Econometric model results suggest that farmers felt that farm size, market access, access to off farm income, agricultural loans, and access to agricultural extension and demonstration plots are key drivers of agricultural sustainability at the farm-level. Differences in agro-ecological conditions and region-specific factors were also significant determinants of relative farm sustainability. This underscores the importance of geographical targeting and tailoring of interventions to increase farm sustainability.