Soybean Bio-fertilizer Technology Promoting Through Cluster Based Demonization in the Mima Learning Watershed from Assosa Western Ethiopia

Soil fertility depletion and soil acidity are critical problems for soybean production in western Ethiopia. Therefore, a cluster based biofertilizer technology was demonstrated to improve the depleted soil fertility on Nitisols of Assosa Agricultural Research Centre during 2022 to 2024 cropping season to investigate the response of soybean yield to biofertilizer. The treatment consists of: farmers practice (100 kg NPS ha<sup>-1</sup>) and biofertilizer plus 100 kg NPS ha<sup>-1</sup>. Multidisciplinary team had given participatory training from the composed of Soil fertility researcher, soybean breeder and agricultural extension and communication for the selected participates. The training was delivered for different stake holders and farmers on agronomic management of soybean production techniques and management, cluster based bio fertilizer technology demonstration approach. Around 830 packets of bio-fertilizer are distributed for the farmers in last four years cropping season. In order to evaluate the performance share the lesson with different stakeholders’ field day and experience sharing were organized in the fields of beneficiary farmers. In the field day and experience sharing famers, development agents (DAs), experts, heads of agricultural and rural development office, researchers were participated. The cluster based demonstrated biofertilizer technology was compared with farmers practice and the field data recorded and analyzed by descriptive statics. The participant farmers and different stake holders preferred biofertilizer plus NPS fertilizer during the field day and experience sharing. The application of recommended NPS plus inoculation was higher in seed yield of maize by 14% compared to the application of recommended NPS fertilizers alone. The yield advantage relative to NPS alone indicating the depletion of the soil microorganism and its strong response to bio fertilizer application.