Relationship between Stability Degree and Chemical Indices of Livestock Manure Composts

• Published in: Applied biological chemistry Vol. 55; no. 4; pp. 563 - 566
• Main Authors: Lim, S.S., Chonnam National University, Gwangju, Republic of Korea, Choi, W.J., Chonnam National University, Gwangju, Republic of Korea, Ro, H.M., Seoul National University, Seoul, Republic of Korea
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Society for Applied Biological Chemistry 01.08.2012; Springer Nature B.V; 한국응용생명화학회
• Subjects: Animal wastes; Applied Microbiology; Biological Techniques; Bioorganic Chemistry; chemical stability degree; Chemistry; Chemistry and Materials Science; compost maturity; compost stability; COMPOSTAGE; COMPOSTING; Composts; ELABORACION DEL COMPOST; Electrical conductivity; Electrical resistivity; Livestock; pH effects; Short Communication; Stability; Stabilization; Yard waste; 농학; composting; chemical stability degree; compost stability; compost maturity
• ISSN: 1738-2203; 2468-0834; 2234-344X; 2468-0842
• DOI: 10.1007/s13765-012-2096-3

Principal chemical indices of compost associated with compost stabilization were investigated using relationship between stability degree (SD) and chemical indices including pH, electrical conductivity (EC), total C, extractable C, decomposability, total N, NH₄+, NO₃-, molar ratio of NH₄+ to NO₃-, C/N, total P, and soluble P of various composts. Compost SD was positively (p less than 0.05) correlated with pH and C/N, and negatively (p less than 0.05) with EC, total N, and molar ratio of NH₄+ to NO₃-. However, the correlation with pH, C/N, and total N were in contradiction to other studies that reported an opposite relationship to ours, probably due to different properties of initial composting materials. Therefore, the present study in conjunction with other studies suggest that EC and the molar ratio of NH₄+ to NO₃- are the chemical indices closely associated with stabilization of composts regardless of composting materials.