Determinants of adoption decision have been studied by many researchers for a long time. This systematic review applied weight analysis method to summarize and synthesize the most common factors from twenty-one studies that determine the farmers' adoption decision of improved crop varieties in a regular pattern in Ethiopia. Hence, the result revealed that factors like Access to credit, Participation in social organization, hired labour, Participation in field day, farm income, farm size and

more »

... nsion contact were marked as best determinants. While training, oxen, fertilizer and access to input market were identified as promising determinants. This review recommends that adoption studies are still in need of fully conceptualization of the studies and methodological improvements.