Participatory on-farm pre-extension demonstrations of soil test crop responses fertilizer recommendations were carried out for bread wheat production in the Sinana District. The study aimed to evaluate and demonstrate soil test crop responses fertilizer recommendations for bread wheat production and to enhance farmers' understanding and capabilities. The experiment was conducted across seven farmers' fields, with each field allocated 0.25 hectares per treatment. The treatments applied were based on specific recommendations using optimum nitrogen (46 kgha-1), phosphors requirement factor (Pf) (5.24), phosphorus critical level (Pc) (22 ppm) using bread wheat Galan verity 150 kgha-1 as test crop. During the experimental conducted in the Sinana District, two Farmer Research Groups (FRGs) having a total of 15 members were established. The results indicated that the highest grain yield of 60.325 kgha-1 was achieved with soil test-based fertilizer recommendations, while the lowest yield of 44.25 kgha-1 was obtained using traditional farmer practices. Soil test-based fertilizer recommendations significantly enhanced grain yield compared to traditional farmer practices, highlighting the effectiveness of targeted fertilizer application in optimizing crop production. Furthermore, the partial budget analysis demonstrated that soil test-based fertilizer recommendations yielded a net profit of 310,563.66 birr, with a remarkable marginal rate of return of 1190.83%. In contrast, the blanket recommendations used in traditional farmer practices were less profitable. Therefore, the dissemination of soil test-based fertilizer recommendations should be prioritized in the Sinana District and similar soil type and agroecology through scaling up and large-scale production is recommended.