GAMBARAN PERCOBAAN PENAMBAHAN EM-4 DAN AIR CUCIAN BERAS TERHADAP KECEPATAN PROSES PENGOMPOSAN

Background: The amount of organic waste every day increasing. Composting is a wise step to reduce the increase in the volume of organic waste from households or industry. Useful addition to reducing the volume of organic waste, composting can be beneficial in the economic and environmental aspects. This study used dry teak leaf litter and rice water as well as EM-4 as bioactivator in composting. The goal was to determine the extent of the influence of rice water and EM-4 to speed the composting process. Methods: Type of the research was qualitative with laboratorium test. There were four treatments, P1 (1 Kg dry teak leaves and rice water), P2 (1 Kg dry teak leaves and EM-4), P3 (1 Kg dry teak leaves, rice water and EM-4), and control (1 Kg dry teak leaves and water wells) with each treatment included three replications. There are 4 indicators composting examined in this study, the temperature measured with a thermometer and color, surfaced measure, and the structure as measured by organoleptic testing by several people. Each of the indicators examined every 5 days. Results data were analyzed by descriptive qualitative. Results: There were differences in the speed of the composting process at each treatment. Composting with rice water (P1) mature on day 90, compost with EM-4 (P2) mature on day 55, compost with rice water and EM-4 (P3) mature on day 40, and compost with well water (control) is immature at day- 90. Conclusion: Compost with material 1 Kg dry teak leaves, EM-4, and rice water faster than other compost