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http://dx.doi.org/10.7745/KJSSF.2012.45.6.968

Status and Changes in Chemical Properties of Paddy Soil in Korea  

Kang, Seong-Soo (Division of Soil and Fertilizer Management, RDA-NAAS)
Roh, Ahn-Sung (Gyeonggido Agricultural Research & Extension Services)
Choi, Seung-Chul (Gangwondo Agricultural Research & Extension Services)
Kim, Young-Sang (Chungbuk Agricultural Research & Extension Services)
Kim, Hyun-Ju (Chungbuk Agricultural Research & Extension Services)
Choi, Moon-Tae (Chungnam Agricultural Research & Extension Services)
Ahn, Byung-Koo (Jeollabukdo Agricultural Research & Extension Services)
Kim, Hyun-Woo (Jeollanamdo Agricultural Research & Extension Services)
Kim, Hee-Kwon (Jeollanamdo Agricultural Research & Extension Services)
Park, Jun-Hong (Gyeongsangbukdo Agricultural Research & Extension Services)
Lee, Young-Han (Gyeongsangnamdo Agricultural Research & Extension Services)
Yang, Sang-Ho (Jeju Agricultural Research & Extension Services)
Ryu, Jong-Soo (Highland Agriculture Research Center, RDA-NICC)
Jang, Young-Sun (Division of Soil and Fertilizer Management, RDA-NAAS)
Kim, Myeong-Sook (Division of Soil and Fertilizer Management, RDA-NAAS)
Sonn, Yeon-Kyu (Division of Soil and Fertilizer Management, RDA-NAAS)
Lee, Chang-Hoon (Division of Soil and Fertilizer Management, RDA-NAAS)
Ha, Sang-Gun (Division of Soil and Fertilizer Management, RDA-NAAS)
Lee, Deok-Bae (Division of Soil and Fertilizer Management, RDA-NAAS)
Kim, Yoo-Hak (Division of Soil and Fertilizer Management, RDA-NAAS)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.45, no.6, 2012 , pp. 968-972 More about this Journal
Abstract
Soil chemical properties of agricultural soils in Korea were investigated at four-years interval in order of paddy, plastic film house, upland, and orchard soils since 1999. Paddy soil samples were taken from the surface 15 cm at 4,047, 2,010, 2,110 and 2,110 sites in all provinces of South Korea in 1999, 2003, 2007 and 2010, respectively. Soil chemical properties in Korea except Jeju province were measured. Soil pH and exchangeable calcium and available silicate contents increased with increasing the application rate of silicate fertilizer and with decreasing its application interval. Soil organic matter content also increased from $22.0g\;kg^{-1}$ in 1999 to $26.0g\;kg^{-1}$ in 2011. Average concentration of available phosphate in 2011 was higher than the upper limit of its optimal range for rice cultivation. However, exchangeable magnesium and available silicate contents were below the lower limit of their optimal ranges, which were 80% and 92% of them, respectively.
Keywords
Paddy soil; Soil chemical property; Optimal range; Available silicate;
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