Mackerel viscera represent a fishery byproduct that has not yet been optimally utilized by the community of Selat Mendaun Village. Utilizing fish viscera to produce liquid organic fertilizer (POC) offers a potential alternative for managing fishery waste. This activity aimed to inform the community about using mackerel viscera for POC production and to gauge their response following the outreach session. A descriptive approach was employed, utilizing a participatory method that encompassed preparation, implementation, and evaluation phases. The outreach was conducted both in person at the village hall and through door-to-door visits. Evaluation was carried out using a Likert-scale questionnaire comprising 10 statements, completed by 10 participants. Data were analyzed descriptively based on total scores and the percentage of community responses. The results showed a total score of 349 out of a maximum of 400, representing 87.25%. The highest response percentage was observed for the "usefulness" indicator (92.5%), while the lowest was for the "knowledge" indicator (75%). These findings indicate a highly positive community response to the outreach activity regarding the use of mackerel viscera as a raw material for liquid organic fertilizer (POC).
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