<![CDATA[This study was conducted in Samarinda to assess the efficacy of bioactivators, maggots (Hermetia illucens), and vermicompost in accelerating the composting of water hyacinth (Eichhornia crassipes). A Randomized Completely Block Design was applied with six treatments: control without additives (E0), bioactivator (E1), maggot (E2), vermicompost (E3), maggot–bioactivator combination (E4), and vermicompost–bioactivator combination (E5), each replicated eight times (48 units). Variables measured included mass shrinkage, temperature dynamics, final pH, C/N ratio, macronutrient content (N, P, K), and organic Carbon. Data were analyzed using ANOVA followed by the LSD test at 0.05 significance. Bioactivator alone (E1) produced the highest peak temperature (64.29°C), indicating strong microbial activity, but resulted in a relatively high C/N ratio (26.88). Maggot treatment (E2) generated the greatest biomass reduction (56.25%) and the highest potassium level (6.05%), with a C/N ratio of 16.48. Vermicompost (E3) yielded more stabilized compost with a C/N ratio of 15.26. Notably, the combined bioactivator–maggot treatment (E4) produced the most mature and nutrient-rich compost, achieving the lowest C/N ratio (8.33) and the highest nitrogen content (1.98%). Meanwhile, the bioactivator–vermicompost combination (E5) produced a C/N ratio of 12.16. Overall, bioactivators enhanced thermophilic conditions, maggots improved biomass degradation and potassium enrichment, and vermicompost supported compost stabilization. Among all treatments, E4 emerged as the most effective strategy for producing high-quality compost efficiently, offering a sustainable approach for managing aquatic weeds and supporting organic agriculture.]]>
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