Multiple adoption of climate-smart agriculture innovation for agricultural sustainability: Empirical evidence from the Upper Blue Nile Highlands of Ethiopia

Adoption of appropriate climate smart innovations is the major step towards enhancing food security, building climate resilience capacity as well as reducing or removing GHG emissions from smallholder farms to sustainably maintain agricultural livelihoods. The purpose of this paper is to investigate the rate, intensity, and determinants of multiple adoptions of climate-smart agriculture innovations among smallholder farmers in Ethiopia's Upper Blue Nile Highlands. All Climate Smart Agriculture (CSA) innovations have a synergistic effect on the adoption of other innovations, with the exception of Soil and Water Conservation (SWC). The economic constraint model demonstrated that farm size, number of plots, and access to financial services influence crop residue management, crop rotation, and agroforestry adoption. Hence, a larger number of plots, a larger total farm size, and access to rural savings and credit increase the probability of adoption. The diffusion innovation model, on the other hand, asserted that frequent extension visits, market access, access to information communication, social networks, and strong tenure security have no less of an impact on the adoption of CSA innovations such as improved variety, crop residue management, crop rotation, compost, SWC, and agroforestry. Furthermore, farmers' perceived technology-specific characteristics of CSA innovations increase the likelihood of adoption. Hence, formal education, more awareness about climate change and CSA, and the ability of CSA innovations to reduce the impact of climate change risks such as rising temperatures, increased hailstorms, and increased erratic rainfall have significantly increased the likelihood of adoption. The integrated technology adoption model explains the determinants of adopting multiple CSA innovations simultaneously. Livelihood asset building programs, strong public extension systems via mobile phone, voice messaging, and radio enhance adoption. Policy to identify and scale up a portfolio of farm-level specific CSA innovations is required.