Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Managing Soil Organic Matter and Salinity by Crop Cultivation in Saemangeum Reclaimed Tidal Land

  • Bae, Hui Su (National Institute of Crop Science, RDA) ;
  • Jang, Hyeonsoo (National Institute of Crop Science, RDA) ;
  • Hwang, Jae Bok (National Institute of Crop Science, RDA) ;
  • Park, Tae Seon (National Institute of Crop Science, RDA) ;
  • Lee, Kyo Suk (Department of Bio-environmental Chemistry, Collage of Agriculture and Life Science, Chungnam National University) ;
  • Lee, Dong Sung (Department of Bio-environmental Chemistry, Collage of Agriculture and Life Science, Chungnam National University) ;
  • Chung, Doug Young (Department of Bio-environmental Chemistry, Collage of Agriculture and Life Science, Chungnam National University)
  • Received : 2017.03.28
  • Accepted : 2018.03.02
  • Published : 2018.02.28
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Abstract

This study was to evaluate the effect of organic amendments incorporation on soil properties and plant growth under two different soil salinity levels and various cultivated crops at Saemangeum reclaimed tidal land for three years from 2012 to 2014. The soil texture of the experimental site was sandy loam. Four different crops, sesbania (Sesbania grandiflora), sorghum-sudangrass hybrid (Sorghum bicolor-Sorghum sudanense), rice (Oryza sativa L.) and barley (Hordeum vulgare) were cultivated at low (< $1dS\;m^{-1}$) and high (> $4dS\;m^{-1}$) soil salinity levels. The soil salinity was significantly lowered at the rice cultivation site compared to continuous upland crops cultivation site in high soil salinity level. But the soil salinity was increased as cultivating sesbania coutinuously in low soil salinity level. The soil organic matter content was increased with the incorporation of straw at the continuous site of rice and barley, and the average of soil organic matter was increased by $0.9g\;kg^{-1}$ per year which was effective in soil aggregate formation. The highest biomass yield plot was found in barley (high salinity level) and sesbania (low salinity level) cultivation site, respectively. Our research indicates that rice cultivation in paddy field with high salinity level was effective in lowering soil salinity and sesbania cultivation was useful to biomass production at upland with low salinity. In conclusion, soil salinity and organic matter content should be considered for multiple land use in newly reclaimed tidal land.

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References

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