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http://dx.doi.org/10.17137/korrae.2016.24.4.77

Study on Characteristics of Chemical Properties and Microbial Flora of Organic Farming Soil in Korea  

Park, Kwang-Lai (Organic Agricultural Division, National Institute of Agricultural Sciences, RDA)
Suga, Yuko (Central Region Agricultural Research Center, Division of Soil Science and Plant Nutrition)
Hong, Seung-Gil (Organic Agricultural Division, National Institute of Agricultural Sciences, RDA)
Lee, Chorong (Organic Agricultural Division, National Institute of Agricultural Sciences, RDA)
Ahn, Minsil (Organic Agricultural Division, National Institute of Agricultural Sciences, RDA)
Kim, Seok-Cheol (Organic Agricultural Division, National Institute of Agricultural Sciences, RDA)
Hashimoto, Tomoyoshi (Central Region Agricultural Research Center, Division of Soil Science and Plant Nutrition)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.24, no.4, 2016 , pp. 77-83 More about this Journal
Abstract
The objectives of this study was to investigate the difference between organic-farming and conventional-farming soils relatives to soil chemical properties and microbial flora. Fifteen soil sampling sites were chosen from the certified organic upland farm, considered with its location, crop and application of organic compost types. Soil chemical properties were analyzed by standard methods established by National Institute of Agricultural Sciences, Rural Development Administration. For the soil chemical properties, the values of pH were ranged from 4.5 to 7.3. The values of electrical conductivity (EC) in the sampling sites were below 2 dS/m of convention cultivation soil. For analyzing the microbial flora, the bacillus(16S rDNA) and cladothricosis(18S rDNA) were analyzed by using PCR-DGGE (Denaturing Gradient Gel Electrophoresis) in the soil of 15 sampling sites. Cluster analysis of biodiversity index was performed by using pattern of DGGE. DGGE patterns and clustering analysis of bacterial DNA from soil extracts revealed that the bacterial community was differentiated between less than 5 years and more than 5 years depending on the cultivation history. But there was no consistent tendency between cultivation history and regional trend in the case of molds. Therefore, it would be very effective to analyze bacterial clusters of organically cultivated soils in long - term cultivated soil for more than 5 years.
Keywords
Organic farming; Upland soil; Chemical property; Fungi; Bacteria;
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Times Cited By KSCI : 1  (Citation Analysis)
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