한국환경농학회지 (Korean Journal of Environmental Agriculture)

  • 제26권4호
  • /
  • Pages.294-299
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  • 2007
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  • 1225-3537(pISSN)
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  • 2233-4173(eISSN)
한국환경농학회 (The Korean Society of Environmental Agriculture)
권호 표지
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Evaluate Changes in Soil Chemical Properties Following FGD-Gypsum Application

  • Lee, Yong-Bok (National Institute of Agricultural Science & Technology, RDA) ;
  • Bigham, Jerry M. (School of Environment and Natural Resources, The Ohio State University) ;
  • Kim, Pil-Joo (Division of Applied Life Science (BK21), Gyeongsang National University)
  • 발행 : 2007.12.31
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초록

Natural gypsum has been used as a soil amendment in the United States. However, flue gas desulfurization (FGD)-gypsum has not traditionally been used for agricultural purpose although it has potential benefit as a soil amendment. To expand use of FGD-gypsum for agricultural purpose, the effect of FGD-gypsum on soil chemical properties was investigated in the field scales. Application rates for this study were 0 (control), 1.1, and 2.2 Mg ha-1 of FGD-gypsum. After two year application, the soil samples were taken to 110 cm depth and sub-sampled at 10 cm intervals. The heavy metal contents in FGD-gypsum were lower than ceiling levels allowed by regulations for land-applied biosolids. Soil pH was not largely affected by FGD-gypsum application. Although degree of calcium (Ca) saturation in surface horizons increases only slightly with respect to the control, there is a clear decrease in exchangeable aluminum (Al). FGD-gypsum clearly increases the soil electrical conductivity (EC) with increasing application rate. Water-soluble Ca and sulfate is increased with FGD-gypsum application and these ions moved to a depth of at least 80 cm after only 2 years. We conclude that surface application of FGD-gypsum can mitigate toxicity of Al and deficiency of Ca in subsoil of acid soil.

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참고문헌

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피인용 문헌

  1. Remediation of saline–sodic soil with flue gas desulfurization gypsum in a reclaimed tidal flat of southeast China vol.45, 2016, https://doi.org/10.1016/j.jes.2016.01.006
  2. Importance of Mineral Nutrition for Mitigating Aluminum Toxicity in Plants on Acidic Soils: Current Status and Opportunities vol.19, pp.10, 2018, https://doi.org/10.3390/ijms19103073