The role of microorganisms in the decomposition of organic matter in compost mass

The use of microbial decomposers and biostimulants in organic matter affects the abundance of microorganisms and their biological diversity in compost. This study was performed to determine the microbial role in the decomposition of organic matter produced by compost and its effect on the diversity and function of microbes residing in the compost product. The degrading microbes used fungi (Trichoderma) and bacteria (Azospirillum brasiliens and Agrobacterium sp.). The composting process was anaerobic and the compost substrates were inverted every ۷ days. The diversity and function of resident microbes from the composting process were determined by microbial isolation and identification of ۱۶S rRNA genes. The ability of microbes to degrade was also analyzed. The results showed that the genus Bacillus tends to dominate. Microbial consortia have high enzymatic activity for the degradation of organic matter. From the three compost sources used, the grass produced better compost and formed a diverse and beneficial bacterial community. Therefore, it can be said that the use of microbial decomposers for composting organic matter is a good way to form beneficial microbial ecosystems.

Keywords:

Microorganisms , Organic matter , Compost , Microbial decomposers