The Population of Bacteria and CO2 Release on Process of Composting Manure and Swamp Grass

Abstract

This study aimed to analyze the bacteria population, the release of CO_2, pH and organic-C and total-N in the process of compost made from manure and swamp grass. Treatment level consist of 100% manure (K₁₀₀), 50% of manure + 50% swamp grass (K₅₀R₅₀), 25% of manure + 75% swamp grass (K₂₅R₇₅), and 10% of manure + 90% swamp grass (K₁₀R₉₀). The result of this study indicated the dynamic of different bacteria population on different composting materials by increasing of the composting time. The release of CO₂ decrease on all treatment levels  by increasing of the composting time. The pH value increased at all levels of treatment, except the composition of 100% manure. The best composition obtained by mixing of 10% manure and 90% swamp grass.

Keywords: CO₂ release_, compost, manure, population, swamp grass.