Introduction Soil microbial diversity is essential for soil health and plant growth. Compost produced by fermentation tanks enhances microbial diversity, fostering a healthy soil ecosystem. Importance of Soil Microbial Diversity Soil microorganisms play critical roles in nutrient cycling, organic matter decomposition, and disease suppression. High microbial diversity promotes soil health and plant resilience.   Role of Fermentation Tanks Fermentation tanks produce compost that is rich i...