This study examines the co-application of Manganese Sulfate (MnSO4) and Biochar (BC) on nitrogen conversion during composting. Conducted over 70 days using swine slurry with varying levels of MnSO4 and a constant 5% BC, results indicate that a blend of 0.5% MnSO4 and BC most effectively improved nitrogen fixationNitrogen is a crucial nutrient for plant growth, but plants can’t directly absorb it from the air. Nitrogen fixation is a process where certain bacteria convert atmospheric nitrogen into a form that plants can use. Biochar can provide a home for these nitrogen-fixing bacteria, enhancing More. This treatment showed the highest levels of key nitrogen compounds, demonstrating enhanced efficiency in the composting process.

Furthermore, the addition of MnSO4 and BC was found to increase the activity of nitrogen-converting enzymes, contributing to a more effective transformation of ammonium nitrogen to humified unknown nitrogen (HUN). This effect was accompanied by an increase in the diversity of microbial communities within the compost, particularly noting an enriched presence of Chloroflexi and Ascomycota.

The study also notes that MnSO4 contributes to an increase in the total organic nitrogen content, alongside amino acid and acid hydrolyzed ammonia nitrogen contents. These results suggest a beneficial role of Mn2+ in facilitating nitrogen conversion, potentially offering a method to enhance the composting process.

By detailing the positive impacts of combining MnSO4 and BC in composting, this research contributes to the understanding of sustainable organic waste management. The findings suggest that this combination could improve the efficiency of composting processes, offering an avenue for reducing environmental impact through enhanced waste recycling in agriculture.