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2024 Vol.57, Issue 4 Preview Page

Original research article

Effect of chelating agent treatment on nutrient leaching and crop growth in plastic film house
Kyeong Min Lee1
,
Dong Ju Lee1
,
Jin Wook Kim2
,
Young Kyu Hong3
,
Sung Chul Kim4*
1Master Student, Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon 34134, Korea
2Doctoral Student, Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon 34134, Korea
3Post-Doctoral Fellow, Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon 34134, Korea
4Professor, Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon 34134, Korea
*Corresponding Author
30 November 2024. pp. 320-330
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Abstract

Soil salinity has an adverse impact on crop productivity and soil ecosystem in plastic film houses. In this study, three chelating agents—ethylenediamine tetraacetic acid (EDTA), diethylenetriamine pentaacetic acid (DTPA), and humic acid (HA)—were compared to evaluate reduction of soil salinity and their effect on enhancing crop productivity. A column experiment was conducted to investigate the chelating efficiency of these agents in the soil, and a pot experiment was carried out to examine the growth response of lettuce. Results from the column experiment showed that all three chelating agents released 7 - 16% more cations (Ca, Na, Mg, Fe) compared to the control (water treatment only), in the order of DTPA, EDTA, and HA. In the case of NO3-, the highest release was observed in the HA treatment, which was 17% higher than the control. For pot experiment, the optimum application ratio for EDTA and DTPA was 0.5 mM and 1 mM for humic acid. When the concentration of EDTA and DTPA exceeded 0.5 mM, or when HA exceeded 1 mM, the growth of lettuce was inhibited, indicating that these higher concentrations had a negative impact of lettuce growth. Overall, applying chelating agents to the soil at optimal concentration can release ions from the soil, which can have a positive effect on crop growth, such as fresh weight.

Schematic diagram of column and pot experiments.
Keywords
Chelating agents
Column experiment
Lettuce
Plastic film house
Salinity
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Information
  • Publisher :Korean Society of Soil Science and Fertilizer
  • Publisher(Ko) :한국토양비료학회
  • Journal Title :Korean Journal of Soil Science and Fertilizer
  • Journal Title(Ko) :한국토양비료학회 학회지
  • Volume : 57
  • No :4
  • Pages :320-330
  • Received Date : 2024-09-11
  • Revised Date : 2024-10-11
  • Accepted Date : 2024-10-14
  • DOI :https://doi.org/10.7745/KJSSF.2024.57.4.320
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