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2025 Vol.58, Issue 1 Preview Page

Original research article

Water quality of inland lakes affects salinity and sodicity of coastal paddy soils in southwestern Korea
Seo-Woo Park1†
,
Nuri Baek2†
,
Se-In Lee23†
,
Eun-Seo Shin1
,
Jiyu Lee4
,
Kwang-Seung Lee5
,
Bang-Hun Kang6
,
Kyo-Suk Lee7
,
Han-Yong Kim8*
,
Woo-Jung Choi9
1Masters Student, Department of Rural & Bio-systems Engineering (Brain Korea 21), Chonnam National University, Gwangju 61186, Korea
2Doctoral Student, Department of Rural & Bio-systems Engineering (Brain Korea 21), Chonnam National University, Gwangju 61186, Korea
3National Institute of Agricultural Science, Rural Development Administration, Wanju 55365, Jeonbuk-do, Korea
4Undergraduate Student, Department of Rural & Bio-systems Engineering (Brain Korea 21), Chonnam National University, Gwangju 61186, Korea
5Researcher, Reclaimed Land Agriculture Research Team, National Institute of Crop Science, RDA, Wanju, Jeonbuk-do 55365, Korea
6Senior Researcher, Reclaimed Land Agriculture Research Team, National Institute of Crop Science, RDA, Wanju, Jeonbuk-do 55365, Korea
7Research Professor, Institute of Agriculture Science, Chungnam National University, Daejeon 34134, Korea
8Professor, Department of Applied Plant Science, Chonnam National University, Gwangju 61186, Korea
9Professor, Department of Rural & Bio-systems Engineering (Brain Korea 21), Chonnam National University, Gwangju 61186, Korea
*Corresponding Author
†These authors contributed equally to this work.
28 February 2025. pp. 59-70
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Abstract

Soil salinity and sodicity of coastal paddy are critical factors affecting rice growth. This study investigated the temporal changes in salinity and sodicity of coastal paddy soils on reclaimed tideland (RTL) in southwestern Korea between 2018 and 2023. Soil samples were collected from a total of 139 paddy fields in five RTL districts and inland lake water samples were also collected. The soil and water samples were analyzed for salinity and sodicity parameters including the electrical conductivity (EC) and sodium adsorption ratio (SAR). Although literature suggested that coastal paddy soils tend to be gradually desalinized with rice cultivation after reclamation, in this study, both salinity and sodicity of the coastal paddy soils tended to increase by 0.4 - 7.7 dS m-1 for EC and by 6.3 - 31.7 for SAR between 2018 and 2023. These changes in EC and SAR were not correlated with sand content, which affects salt movement in soils. Rather than, EC and SAR of coastal paddy soils on average across the paddy fields for each RTL district in each year were closely correlated with those of inland lake water, which is the source of irrigation for paddy fields. These results imply that salinity and sodicity of the coastal paddy soils are primarily linked to the irrigation water quality, which is also affected by inter-annual variations in the precipitation.

Correlations of electrical conductivity (EC) and sodium adsorption ratio (SAR) between inland lake water and paddy soils of five reclaimed tideland (RTL) districts across 2018 – 2023.
Keywords
electrical conductivity
exchangeable sodium percentage
reclaimed tideland
salinization
sodium adsorption ratio
References
1

Beom J, Jeung M, Park HJ, Choi WJ, Kim Y, Yoon KS. 2023. Spatio-temporal variations of paddy and water salinity of Gunnae reclaimed tidelands in western coastal area of Korea. J. Korean Soc. Agric. Eng. 65:73-81. https://doi.org/10.5389/KSAE.2023.65.1.073

2

Francois LE, Maas EV. 1999. Crop response and management of salt-affected soils. p.169-201. In Pessarakli M (Ed.) Hand Book of Plant and Crop Stress, New York, USA.

10.1201/9780824746728.ch8
3

Guo Y, Huang J, Shi Z, Li H. 2015. Mapping spatial variability of soil salinity in a coastal paddy field based on electromagnetic sensors. PLoS One 10:e0127996. https://doi.org/10.1371/journal.pone.0127996

10.1371/journal.pone.012799626020969PMC4447356
4

Jeong YJ, Lim SS, Park HJ, Seo BS, Park SI, Ryu JH, Lee KS, Chung DY, Kim HY, Lee SH, et al. 2020. Evaluation of crop suitability for reclaimed tideland soils using soil and water salinity and soil texture. Korean J. Soil Sci. Fert. 53:70-81. https://doi.org/10.7745/KJSSF.2020.53.1.070

10.7745/KJSSF.2020.53.1.070
5

Lee KS, Oh YY, Ock HK, Lee HS, Kang BH, Jung KH. 2022. Emergence rates of sesame, perilla, peanut, and sorghum under different soil moisture conditions and amendment treatments in Saemangeum reclaimed land. Korean J. Soil Sci. Fert. 55:139-147. https://doi.org/10.7745/KJSSF.2022.55.2.139

10.7745/KJSSF.2022.55.2.139
6

Lim SS, Yang HI, Park HJ, Park SI, Seo BS, Lee KS, Lee SH, Lee SM, Kim HY, Ryu JH, et al. 2020. Land-use management for sustainable rice production and carbon sequestration in reclaimed coastal tideland soils of South Korea: a review. Soil Sci. Plant Nutr. 66:60-75. https://doi.org/10.1080/00380768.2019.1674121

10.1080/00380768.2019.1674121
7

Maas EV, Hoffman GJ. 1977. Crop salt tolerance-Current assessment. J. Irrig. Drain. Div. 103:115-134. https://doi.org/10.1061/JRCEA4.0001137

10.1061/JRCEA4.0001137
8

Maas EV. 1987. Salt tolerance of plants. p. 20. In Hanson AA (Ed.) CRC Handbook of plant science in agriculture. CRC Handbook of Plant Science in Agriculture, Boca Raton, Florida, USA.

9

MAFRA (Ministry of Agriculture, Food and Rural Affairs). 2023. Agriculture, food and rural affairs statistics yearbook. Sejong, Korea.

10

Park HJ, Choi WJ. 2023. Agricultural Water Salinity of Reclaimed Tidelands in Southwestern Coastal Areas of South Korea. Korean J. Soil Sci. Fert. 56:101-108. https://doi.org/10.7745/KJSSF.2023.56.1.101

10.7745/KJSSF.2023.56.1.101
11

Park HJ, Seo BS, Jeong YJ, Yang HI, Park SI, Baek N, Kwak JH, Choi WJ. 2022. Soil salinity, fertility and carbon content, and rice yield of salt-affected paddy with different cultivation period in southwestern coastal area of South Korea. Soil Sci. Plant Nutr. 68:53-63. https://doi.org/10.1080/00380768.2021.1967082

10.1080/00380768.2021.1967082
12

Rhoades JD, Manteghi NA, Shouse PJ, Alves WJ. 1989. Estimating soil salinity from saturated soil-paste electrical conductivity. Soil Sci. Soc. Am. J. 53:428-433. https://doi.org/10.2136/sssaj1989.03615995005300020019x

10.2136/sssaj1989.03615995005300020019x
13

Seo BS, Baek N, Park SW, Shin ES, Oh YY, Kang BH, Park HJ, Choi WJ. 2023. Spatial variations in salinity and sodicity of reclaimed tideland paddy soils in coastal areas of southwestern Korea. Korean J. Soil Sci. Fert. 56:217-225. https://doi.org/10.7745/KJSSF.2023.56.3.217

10.7745/KJSSF.2023.56.3.217
14

Seo BS, Jeong YJ, Lee KS, Choi WJ. 2021. Effects of equilibrium time on electrical conductivity measurements using soil-water extracts and soil saturated paste. Korean J. Soil Sci. Fert. 54:257-263. https://doi.org/10.7745/KJSSF.2021.54.2.257

10.7745/KJSSF.2021.54.2.257
15

Seo BS, Lee KS, Park HJ, Jeong YJ, Baek N, Lee SI, Yoon KS, Choi WJ. 2022. Conversion Factors for Electrical Conductivity of 1:5 Soil-Water Extracts to Saturated Paste of Reclaimed Tideland Soils are Affected by Sand Contents. Korean J. Soil Sci. Fert. 55:251-260. https://doi.org/10.7745/KJSSF.2022.55.3.251

10.7745/KJSSF.2022.55.3.251
16

Seong CH. 2014. Assessing temporal and spatial salinity variations in estuary reservoir using EFDC. J. Korean Soc. Agric. Eng. 56(6):139-147. https://doi.org/10.5389/KSAE.2014.56.6.139

10.5389/KSAE.2014.56.6.139
17

Sumner ME, Miller WP. 1996. Cation exchange capacity and exchange coefficients. pp. 1201-1229. In: Sparks DL et al. (Eds.) Methods of Soil Analysis, Part 3. Chemical methods. Soil Science Society of America and American Society of Agronomy, Madison, WI, USA.

10.2136/sssabookser5.3.c40
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 : 58
  • No :1
  • Pages :59-70
  • Received Date : 2025-01-14
  • Revised Date : 2025-02-10
  • Accepted Date : 2025-02-10
  • DOI :https://doi.org/10.7745/KJSSF.2025.58.1.059
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