<![CDATA[Suboptimal management of household kitchen waste remains an environmental issue in urban communities, including in Kampoeng Pintar Oase Tembokgede, Surabaya. This situation underscores the need for simple and sustainable methods of utilizing organic waste that align with Sustainable Development Goal (SDG) 12 on responsible consumption and production. This community service activity was carried out in collaboration with the Kampoeng Pintar Oase Tembokgede Surabaya community through education and practical training on the production of liquid organic fertilizer (POC) made from kitchen waste and rotten tempeh. The activity methods included outreach on household organic waste management, training on POC production, and a demonstration of POC application on Brazilian spinach (Alternanthera sissoo) as part of urban farming activities within the community. The activity was evaluated through observations of plant growth as well as community response and participation in utilizing organic waste. The results of the activity showed that the POC produced contained the nutrients N, P, K, and organic C with a C/N ratio of 10.7, which is suitable for use as a simple organic fertilizer. POC application improved Brazilian spinach growth and enhanced the community’s skills in converting kitchen waste into useful products.]]>
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