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Evaluation of the Dressed Soil applied in Mountainous Agricultural Land  

Joo, Jin-Ho (Division of Biological Environment, Kangwon National University)
Park, Chol-Soo (National Institute of Alpine Agriculture, RDA)
Jung, Yeong-Sang (Division of Biological Environment, Kangwon National University)
Yang, Jae-E (Division of Biological Environment, Kangwon National University)
Choi, Joong-Dae (Division of Agricultural Engineering, Kangwon National University)
Lee, Won-Jung (Division of Agricultural Engineering, Kangwon National University)
Kim, Sung-Il (Gangwon Agricultural Research and Extension Services)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.37, no.4, 2004 , pp. 245-250 More about this Journal
Abstract
Farmers typically apply the dressed soil (coarse saprolite) for various reasons in the sloped upland with high altitude in Kangwon province. However, little researches on the impacts of application of dressed soil in uplands were conducted. Therefore, it is necessary to assess soil quality in this area and to study adverse effects on soil and water due to application of dressed soil. Coarse saprolite itself showed signiScantly poor chemical properties, Particularly P and organic matter contents were not enough for crops to grow. With respect to biological qualities such as enzyme activity and microbial population, coarse saprolite itself showed poor qualities. For example, bacterial population in coarse saprolite contains six times or ten times smaller populations. Based on survey at Jawoon-ri in Hongchon-gun, this region is susceptible for soil erosion due to massive amounts of coarse saprolite application, undesirably long slope length, etc. When weestimated soil loss, more than 40% of farming field in this region exceeded $11.2MT\;ha^{-1}\;yr^{-1}$. According to experiment by installing sediment basins. the sediment basin with up-down tillage and application with dressed soil had the highest soil loss and runofT, while the sediment basin with contour tillage and without soil dressing showed the lowest soil erosion and runoff.
Keywords
Dressed soil; Saprolite,; Soil loss; Erosion; Sediment basin;
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