Effect of lignocellulolytic microorganisms isolated from the peel of cassava, rice straw, and sawdust for the composting process of rice straw

Abstract

The composting process will take a long time if only rely on indigenous decomposing microorganisms. This study explored the source of the isolates as bioactivator of composting. The purpose of the present study was to isolate lignocellulolytic microorganisms from the peel of cassava, rice straw (RS), and sawdust and to investigate the effect of the lignocellulolytic microorganisms for the composting process of RS. The research was conducted by two steps. The first step was isolation of bacteria and fungi from the peel of cassava, RS, and sawdust by using CMC, Lignolytic selection, and Omeliansky media, and isolation general bacteria and Actinobacteria from the one-week-old RS compost by using media of NA and SCA. The second step was application of the mixed isolates obtained from the first step as bioactivator for the composting of RS. As the control treatment, the other composting of RS was also set up with no addition of bioactivator. After 60 days composting, the results showed that RS compost product from the composting using bioactivator indicated higher quality with C/N ratio, total N, P2O5, and K2O namely 15.2, 1.44%, 1.40%, and 1.86% comparing with control that were 23.2, 1.12%, 1.19%, and 1.63%, respectively.