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http://dx.doi.org/10.5333/KGFS.2006.26.1.015

Determination of Nutrient Contents of Liquid Pig Manure and the Correlation of Components as Fertilizer in Western JeJu Area  

Song Sang-Taek (Jeju Province Research Institute of Health and Environment)
Kim Mun-Chol (Collage of Applied Life Sciences, Cheju National University)
Hwang Kyoung-Jun (National Institute of Subtropical Agriculture)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.26, no.1, 2006 , pp. 15-24 More about this Journal
Abstract
This study was conducted to make a rapid and easy determination for the fertility of liquid pig manure as fertilizer by investigating the contents, and correlation coefficients of various nutrients. Samples were collected from 118 local pig farms in the western area of Jeju in Korea. Electrical conductivity(EC), dry matter(DM), $NH_4-N$ and minerals were determined and the relationships among them were examined. The collected liquid manure samples from 118 pig farms were classified according to the level of DM contents ;< 3% (92 farms), $3{\sim}6%$ (18 farms), $6{\sim}9%$ (5 farms) and>9% (3 farms), based on the collected data, most of the liquid manure coming from the local pig farms contain small amount of dry matter. The dry matter contents appeared highly correlated(p<0.01) with EC, $NH_4-N$, T-P, Ca, Mg and Na, except for K. In addition EC was proportional to $NH_4-N$, T-P, Ca, and Na except fer Mg. The fertilizer component ratio of $NH_4-N$, P and K in liquid pig manure were not constant, resulting in low efficiency for fertilizer. However, the toxic heavy metals of Cu etc. were below the criteria of organic fertilizer and soil contamination evaluation. Therefore, we concluded that both dry matter content and electrical conductivity could be used as an indicator for evaluating the fertility of liquid pig manure.
Keywords
Liquid pig manure; EC; DM; OM; $NH_4-N$;
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