<![CDATA[Cow manure is a livestock waste product with high lignocellulose content that poses a potential environmental pollution risk if not managed properly. This study aimed to determine the effect of adding bioactivators, specifically cellulolytic fungal isolates (Penicillium sp. and Curvularia sp.), Aspergillus sp., and EM4 on the quality of compost made from cow manure and rice husks over a 35-day composting period. A Completely Randomized Design (CRD) was employed with five treatments and four replicates: P0 (control without bioactivator), P1 (EM4), P2 (Aspergillus sp. + FS2 + FS3), P3 (Aspergillus sp.), and P4 (EM4 + FS2 + FS3). Parameters observed included physical and chemical parameters. The results obtained were analyzed using analysis of variance (ANOVA). The results indicated that the addition of bioactivators accelerated the decomposition process and produced compost with superior physical characteristics compared to the control. Treatment P2 yielded the best physical quality compost, characterized by the finest, most crumbly texture and a uniform black color. Chemically, all treatments met the SNI 19-7030-2004 standards; notably, P0 exhibited the highest N content (1.60%) and the lowest C/N ratio (16.96), indicating optimal chemical maturity. This is likely attributed to the indigenous microorganisms in the cow manure being already optimally adapted to the substrate, thereby eliminating the need for an additional acclimatization phase.]]>
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