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http://dx.doi.org/10.7745/KJSSF.2012.45.2.143

Topographical Chemical Properties of Paddy Soils in Gyeongnam Province  

Lee, Young-Han (Gyeongsangnam-do Agricultural Research and Extension Services)
Sonn, Yeon-Kyu (National Academy of Agricultural Science, RDA)
Lee, Seong-Tae (Gyeongsangnam-do Agricultural Research and Extension Services)
Heo, Jae-Young (Gyeongsangnam-do Agricultural Research and Extension Services)
Kim, Min-Keun (Gyeongsangnam-do Agricultural Research and Extension Services)
Kim, Eon-Seok (Gyeongsangnam-do Agricultural Research and Extension Services)
Song, Won-Doo (Gyeongsangnam-do Agricultural Research and Extension Services)
Zhang, Yong-Sun (National Academy of Agricultural Science, RDA)
Jeon, Weon-Tai (National Institude of Crop Science, RDA)
Ok, Yong-Sik (Biochar Research Center, Department of Biological Environment, Kangwon National University)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.45, no.2, 2012 , pp. 143-148 More about this Journal
Abstract
Sustainable agriculture requires reliable information on the spatial distribution of the soil chemical properties for effective management of paddy fields. In order to provide adequate soil nutritional information for environmental-friendly agriculture, we investigated the soil chemical properties for 260 paddy soils sampled in Gyeongnam Province from 1999 to 2011 by four years of interval. Soil chemical properties of pH, organic matter, available phosphate and silicate, exchangeable potassium, calcium, and magnesium contents were analyzed. The pH value, organic matter, available phosphate and silicate, and exchangeable calcium and magnesium in paddy soils were significantly elevated in 2011 compared to 1999. The excessive levels of organic matter and available phosphate in paddy soils were detected in 2011. The soil available phosphate was highest in mountain foot-slope (p<0.05) and the soil organic matter was highest in diluvial terrace (p<0.05). It revealed that the soil available phosphate was the responsible factor for the differentiation of soil chemical properties by the topography in paddy soils.
Keywords
Paddy soil; Chemical property; Soil topography; Available phosphate;
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