Abstract:
Small-scale irrigation is vital for raising agricultural production and productivity and improving 
the food security of smallholder farmers. This study was done in the Sululta district of the Oromia 
regional state, Ethiopia. The study was focused on identifying factors that affect household 
participation in small-scale irrigation, analyzing the impact of small-scale irrigation on household 
food security, and determining challenges and opportunities for small-scale irrigation. To choose 
the sample household, multi-stage sampling approaches were used. Data from both primary and 
secondary sources were used. Household surveys, focus group discussions, and interviews with 
key informants were used to obtain primary data from 246 sample households. Secondary data 
was gathered from both published and unpublished sources. The descriptive statistics, inferential 
statistics, and econometric model were used to analyze the data. The study used PSM model to 
analyzing the impact of small-scale irrigation on household food security while Logit model used 
to identify factors affect household participation decision in small-scale irrigation. Thematic 
analysis method was used to determining challenges and opportunities for SSI. According to the 
binary logistic regression, education level, size of cultivated land, frequency of extension contacts,
and access to credit services were the variables that positively significant affected small-scale 
irrigation participation (SSI) while age, distance from irrigation water, and market distance were 
the variables that negatively significant affected SSI. Cost of inputs, credit access, distribution of 
water, road and electricity access and storage facilities were the major challenges while 
employment opportunities, water potential and suitability of land were the major opportunities for 
SSI participation. On average, participant households increased their HDDS and HFCS by 1.16 
and 7.60 score, respectively. Thus, construction of irrigation schemes, arranging training and 
experience sharing to elder farmers, and provision of credit service should priority concern to
enhance farm households’ participation decision in SSI for improving food security.