One strategy for the Bali provincial government to produce organic fertilizer to reduce the use of inorganic fertilizers in the agricultural system in Bali through the formation of groups "Simantri". The purpose of this study to determine the effectiveness of the group in support of government programs in the province of Bali in the supply of organic fertilizer and biourine from cattle manure in the group "Simantri". Retrieving data using a survey method and observation in three regencies in Bali namely: Tabanan, Buleleng, and Karangasem. In every district taken three groups of cattle are "purposive sampling" on each different altitude are lowlands, plains, and plateaus so that the number of groups of as many as 27 groups of cattle. The results showed 66.49% herd to process cow manure into organic fertilizer and biourine, and the highest percentage (70.07%) in the lowlands. In the process of fermentation into fertilizer, the majority (45.50%) using EM4 as fermenters and averaging 66.49% said the results are good. Organic fertilizer produced by the group in addition to increasing the income of the group, and the majority (71.78%) use it in their farm system and can be beneficial to farmers. From this study, it can be concluded that the Bali provincial government's efforts in developing organic agricultural products through the establishment of herd program "Simantri" very effective.