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Chemico-physical characteristics of livestock compost in Korea

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  131621030,  2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: http://dx.doi.org/10.13031/aim.20131621030) @2013
Authors:   J. R. Jang, Inhong Song, J. H. Ahn, M. S. Kang
Keywords:   Livestock compost Heavy metal Nutrient content Land application Recycling

Abstract. Livestock manure has some beneficial nutrients if treated properly and applied to farm lands for crop production. As the public attention to environmental value increases, recycling of organic waste in particular for agricultural production has been emerged as sustainable measures. The objective of this study is to characterize chemico-physical properties of livestock compost in Korea. It is known that livestock compost contains some heavy metal content, which may accumulate in the farm lands and subsequently cause environmental issues. We have collected total 29 samples of livestock compost from local market nationwide. Source of livestock manure and its mixing methods was considered for the sample collection procedure. Chemical-physical content and their correlations were analyzed using Pearson correlation methods. Overall organic content of the samples varied from 38 % to 47% with the mean of 43%. The mean contents of TN and TP were 1.8 and 2.36 %, respectively. All components of heavy metal were well below the Korean standard for livestock manure. Overall poultry manure has greater nutrient content followed by swine manure, while cow manure was the least in nutrient. It was concluded that the study result may provide useful data for planning manure application for agricultural crop production.

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