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2021 Vol.54, Issue 4 Preview Page

Original research article

Salt Removal from Soil by Winter and Spring Cultivation of Tall Fescue and Italian Ryegrass in Saemangeum Reclaimed Tidal Land
Seok-In Yun1*
,
Jin-Hyeob Kwak2
,
Bo Ram Choi3
,
Gi-Yong Kim4
1Associate Professor, Department of Bio-Environmental Chemistry and Institute of Life Science and Natural Resources, Wonkwang University, Iksan 54538, Korea
2Assistant Professor, Rural Construction Engineering Department, Jeonbuk National University, Jeonju 54896, Korea
3Researcher, Grassland and Forages Division, National Institute of Animal Science, RDA, Cheonan 31000, Korea
4Senior Researcher, Grassland and Forages Division, National Institute of Animal Science, RDA, Cheonan 31000, Korea
*Corresponding Author
30 November 2021. pp. 514-524
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Abstract

Creating grasslands and cultivating forage crops on reclaimed tidal land in winter and early spring can contribute to improving soil physicochemical properties, reducing fine dust, and increasing feed self-sufficiency. Ryegrasses that adapt well to reclaimed land include tall fescue (Festuca arundinacea Schreb.) and Italian ryegrass (Lolium multiflorum Lam.), which are a cool-season perennial and a winter annual, respectively. To evaluate the salt uptake by winter crops and the soil desalinization, tall fescue and Italian ryegrass were grown twice for 3 years on Saemangeum reclaimed tidal land. The nutrient uptake and dry matter yield of crops were low in reclaimed tidal land compared to inland agricultural land, reflecting the nutrient-poor condition of the reclaimed tidal land. The crops removed 6.4 - 10.3 kg ha-1, 9.8 - 12.5 kg ha-1, and 4.1 - 12.2 kg ha-1 for Ca, Mg, and Na per winter cultivation, respectively. Soil salinity significantly (P < 0.05) decreased in Italian ryegrass cultivation plot compared with control and tall fescue cultivation plots, reflecting salt removal by Italian ryegrass which was higher in salt uptake than tall fescue. These results suggest that creating grassland and cultivating forage crops on reclaimed tidal land in winter and early spring can contribute to soil desalinization along with the supply of forage containing high concentrations of minerals.

Removal of Ca, Mg, K, and Na from soil by tall fescue and Italian ryegrass grown in Seamangeum reclaimed tidal land.
Removal by tall fescue (kg ha-1) Removal by Italian ryegrass (kg ha-1)
Ca Mg K Na Ca Mg K Na
First cultivation† 6.4 ± 1.1‡ 10.0 ± 1.5 106 ± 14 4.1 ± 0.9 10.3 ± 0.9 12.1 ± 1.4 89 ± 9 6.1 ± 0.7
Second cultivation 6.2 ± 0.7 9.8 ± 0.9 88 ± 7 6.6 ± 1.1 9.6 ± 1.7 12.5 ± 1.2 111 ± 6 12.2 ± 2.7

†The first and second cultivation was conducted between 2019 and 2020, and between 2020 and 2021.

‡Values are means ± standard deviation (n = 3).

Keywords
Forage crop
Grassland
Soil desalinization
Soil salinity
Winter forage crop
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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 : 54
  • No :4
  • Pages :514-524
  • Received Date : 2021-10-17
  • Revised Date : 2021-11-01
  • Accepted Date : 2021-11-01
  • DOI :https://doi.org/10.7745/KJSSF.2021.54.4.514
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