Status and Change in Chemical Properties of Polytunnel Soil in Korea from 2000 to 2012

  • Kang, Seong Soo (Division of Soil and Fertilizer, 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, Byoung Gu (Jeollabukdo Agricultural Research & Extension Services) ;
  • Kim, Hee Kwon (Jeollanamdo Agricultural Research & Extension Services) ;
  • Park, Sang Jo (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, Pyeongchang, RDA-NICC) ;
  • Sohn, Yeon Gyu (Division of Soil and Fertilizer, RDA-NAAS) ;
  • Kim, Myeong Sook (Division of Soil and Fertilizer, RDA-NAAS) ;
  • Kong, Myung Suk (Division of Soil and Fertilizer, RDA-NAAS) ;
  • Lee, Chang Hoon (Division of Soil and Fertilizer, RDA-NAAS) ;
  • Lee, Deog Bae (Division of Soil and Fertilizer, RDA-NAAS) ;
  • Kim, Yoo Hak (Division of Soil and Fertilizer, RDA-NAAS)
  • Received : 2013.11.14
  • Accepted : 2013.12.06
  • Published : 2013.12.31


Chemical properties of agricultural soils in Korea have been investigated at four-year interval in order of paddy, polytunnel, upland, and orchard soils since 1999; polytunnel soils were investigated over the whole country in 2000, 2004, 2008, and 2012. Polytunnel soils were taken from the surface (0-15 cm) and subsurface (15-30 cm) at 2,651, 1,274, 1,374 and 1,374 sites in all provinces of South Korea. One hundred sampling sites located in more than 400 m altitude were additionally investigated in 2008 and 2012. Average of soil chemical properties in 2012 except Jeju province were 6.6 for pH, 3.2 dS $m^{-1}$ for EC, 37 g $kg^{-1}$ for organic matter (OM), 1,049 mg $kg^{-1}$ for available (Avail.) phosphate, 1.58 $cmol_c\;kg^{-1}$ for exchangeable (Exch.) K, 10.6 $cmol_c\;kg^{-1}$ for Exch. Ca, and 3.3 $cmol_c\;kg^{-1}$ for Exch. Mg. Except pH, averages of all chemical properties exceeded the upper limit of optimal range. The median values except pH showed a lower value than the averages. The pH, OM and Exch. Ca had slightly increased from 6.3 to 6.6, from 34 to 37 g $kg^{-1}$, and from 7.7 in 2000 to 10.6 $cmol_c\;kg^{-1}$ in 2012, respectively. The order of sample ratios exceeding the optimal range were Avail. $P_2O_5$ (83%) > Exch. Ca (80%) > Exch. K (70%) > Exch. Mg (65%) > EC (55%) > OM (48%) > pH (29%) in 2012. The order of sample ratios below the optimal range was OM (25%) > Exch. K (25%) > pH (20%), Exch. Mg and Avail. $P_2O_5$ (9%) > Exch. Ca (6%) in 2012. The excessive proportion of pH, Exch. Ca, Exch. Mg and OM slightly increased, while the insufficient proportion of those decreased. Approximately 55% of polytunnel soils exceeding EC 2 dS $m^{-1}$ was evaluated with salt accumulated soils having the risk of growth disorder of crops. Nutrient contents in polytunnel soils in Korea showed high level especially Avail. $P_2O_5$ and Exch. cations. Therefore, recommended fertilization based on soil testing or plant testing is needed for soil nutrient management.


Plastic film house soil;Polytunnel soil;Salt accumulation;Soil chemical property


Grant : Cooperative Research Program for Agricultural Science & Technology Development

Supported by : Rural Development Administration


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