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http://dx.doi.org/10.5338/KJEA.2002.21.3.197

Changes of Electrical Conductivity and Nitrate Nitrogen in Soil Applied with Livestock Manure  

Hwang, Ki-Sung (National Horticultural Research Institute, RDA)
Ho, Qyo-Soon (College of Agriculture, Sangji University)
Kim, Hyoung-Deug (National Horticultural Research Institute, RDA)
Choi, Ju-Ho (Jinju National University)
Publication Information
Korean Journal of Environmental Agriculture / v.21, no.3, 2002 , pp. 197-201 More about this Journal
Abstract
This study was conducted in Jeju Island to find the effects of livestock manure application on the changes in soil salt concentration and $NO_3-N$ contents. Soil samples were collected from Goojua-Tong (volcanic ash soil) and Aewol-Tong(non-volcanic ash soil) to 50 cm depth and were mixed with livestock manure to 20 cm depth in PVC container(30 cm diameter, 1 m height). Animal manures of cattle, pig, and fowl were adjusted to 0, 50, 100,150 ton/ha. Animal manure applications increased the salt concentrations in soil. The salt concentration was increased as the fowl manure amount was increased The effects were larger in order of fowl manure > cattle manure $\fallingdotseq$ pig manure. $NO_3-N$ contents in soil showed a sharp increase by applications of fowl manure, but the increase was slow when the cattle and pig manures were applied. In volcanic ash soil, there was no change in phosphate contents by application of animal manures, but the phosphate contents increased in non-volcanic ash soil with the application of animal manure, especially by fowl manure.
Keywords
livestock manure; volcanic ash soil; non-volcanic ash soils; electrical conductivity; nitrate nitrogen;
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