The study determined effects of climate change adaptation on efficiency of rice farmers in Benue State, Nigeria. Multistage sampling technique was employed to select 498 respondents and data were collected using a well structured questionnaires. The data were analysed using descriptive statistics and stochastic frontier models. The results reveal that, technical (0.69), allocative (0.73) and economic ( 0.53) efficiencies among the farmers. Also, farm size (0.348), hired labour (0.093), organic fertilizer (0.046) and post-emergent herbicide (0.200) had positive significant relationship with output ( P˂0.01). Inefficiency effects model shows that fertilizer application (-0.113), water management (-0.102) and multiple planting dates (-0.114) had negative significant relationship with inefficiency (P˂0.01) While, improved seed varieties (0.136) and land management (0.055) had positive significant relationship with inefficiency ( P˂0.01; P˂0.05) respectively. The farmers therefore, exhibit a moderate efficiency level with notable gaps in economic and allocative efficiencies. There is need to promote the use of climate-smart production system, extension services and training to enhance climate change adaptation and efficiency of rice production..
Keywords: efficiency, adaptation, climate change, effect