• Title/Summary/Keyword: 염해토양

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A rapid determination of chloride in saturated paste extracts of salt-affected soils using EC change upon AgCl precipitation (AgCl 침전 전후 전기전도도 변화를 이용한 염해지 포화침출액의 염소 이온 신속 정량)

  • Lee, Yehun;Kim, Jeeyoon;Lee, Jeongsu;Pros, Khok;Park, Jee Won;Han, Gwang Hyun
    • Journal of Applied Biological Chemistry
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    • v.60 no.3
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    • pp.279-282
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    • 2017
  • Chloride is known as the most important anion in salt-affected soils. We observed the degree of EC change upon AgCl precipitation was quantitatively related with the chloride concentration. Method validation and intercomparison with ion chromatography revealed the proposed method can provide rapid and moderately precise chloride concentrations in salt-affected soils.

The Study on the Limiting Factor to Determine Available Soil Depth in Korea (우리나라 토양의 유효토심 결정시 저해인자에 관한 연구)

  • Hyun, Byung-Keun;Rim, Sang-Kyu;Jung, Sug-Jae;Sonn, Yeon-Kyu;Song, Kwan-Cheol;Noh, Dae-Cheol;Lee, Heob-Seung;Hyun, Geun-Soo;Zhang, Yong-Seon;Hong, Suk-Young;Park, Chan-Won;Kim, Lee-Hyun;Chol, Eun-Young;Jang, Byeong-Chun
    • Korean Journal of Soil Science and Fertilizer
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    • v.41 no.5
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    • pp.293-302
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    • 2008
  • The limiting factors to determine available soil depth were studied with 390 soil series in soil profile description and physicochemical data in Korean soils. The limiting factors were coarse sandy layer, gravel and skeletal layer, hardpan layer, cat clay layer, poorly drained layer, salt accumulated layer and bed rock layer so on. The soils of having limiting factors were 332 soil series, but soils without limiting factors were 58 soil series. Soils with limiting factors were, hardpan 5, slopeness 93, immature soil 29, cinder 5, sandy 42, gravel or skeletal 47, bedrock 19, high salt content 8, poorly drained soil 22, heavy clay 32, sulfate soil 3 and ash soil 27 etc. And the orders of available soil depth were immature > slopeness > ash > heavy clay > sandy > gravel or skeletal > hardpan > cindery > poorly drained > bedrock > acid sulfate soil > salt accumulated soil etc.

Desalinization of Salt-affected Soil by Phytoremediation (간척지 염해토양의 Phytoremediation에 의한 제염)

  • Son, Jae-Kwon;Song, Jae-Do;Shin, Won-Tae;Lee, Su-Hwan;Ryu, Jin-Hee;Cho, Jae-Young
    • Korean Journal of Organic Agriculture
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    • v.24 no.3
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    • pp.583-598
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    • 2016
  • Salted-affected soil is a major environmental constraint with severe negative impacts on agricultural productivity and sustainability in reclaimed tidelands. This review focuses on the phytoremediation of reclaimed tidelands. We address the process of phytoremediation of these soils, comparison of phytoremediation with other amelioration approaches, driving forces contributing to the process, selection of phytoremediation crops, and the role of cropping in securing environmental integrity under salt-affected soils.

Properties and Disalinization of Salt-affected Soil (간척지 염해토양의 특성과 제염기법)

  • Son, Jae-Kwon;Song, Jae-Do;Shin, Won-Tae;Lee, Su-Hwan;Ryu, Jin-Hee;Cho, Jae-Young
    • Korean Journal of Organic Agriculture
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    • v.24 no.2
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    • pp.273-287
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    • 2016
  • Accumulation of excessive salt in Reclaimed coastal tidelands can reduce crop yields, reduce the effectiveness of irrigation, degradation of soil structure, and affect other soil properties. These salts has shown to cause specific ions in the plant over a period of time leads to ion toxicity or ion imbalance and a continuous osmotic phase that prevents water uptake by plants due to osmotic pressure of saline soil solution. This review focuses on the characteristics of salt-affected soils, mechanisms of salt-tolerance plants, desalinization technology, and soil management to maintain sustainable agro-ecosystem in salt-affected soils.

Growth of Creeping Bentgrass on Bottom Ash and Dredged up Sand with Four Organic Matter Amendment Rates Under Saline Irrigation Condition (염해 조건에서 유기물이 첨가된 준설모래와 석탄회 토양이 크리핑 벤트그래스의 생육에 미치는 영향)

  • Rahayu, Rahayu;Yang, Geun-Mo;Choi, Joon-Soo
    • Asian Journal of Turfgrass Science
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    • v.23 no.2
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    • pp.241-252
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    • 2009
  • This study was carried out to check the possibility of substituting bottom ash from the Seosan power plant for sand as growing media for creeping bentgrass (Agrostis stolonifera L.) under saline irrigation condition. Characteristics of growing media were evaluated by using column and leaching method. Creeping bentgrass cv. Pen-A1 was grown in pots with dredged up sand (DS) and bottom ash (BA) media those were amended using 1%, 2%, and 3 % OM rates in a green house. The plants were irrigated with 1.5 $dSm^{-1}$ saline water. Results showed that visual quality, plant height and shoot dry weight from DS treatment were higher than those of BA treatment. Even though BA contained more salts, repeated leaching could decrease ECe efficiently. In case of no OM amendment, the visual quality, plant height and shoot dry weight were similar between in BA and DS. Amendment of 2% OM increased the height of creeping bentgrass in DS, while decreased the plant growth in BA.

Effect of Mulberry Charcoal Treatment on the Growth and Physiological Properties of Kentucky Bluegrass Grown under Salt Stress Condition (뽕나무 숯 처리가 Kentucky Bluegrass의 염해에 따른 생육과 생리적 반응에 미치는 영향)

  • Bae, Euu-Ji;Jeong, Sung-Woo;Park, Nam-Chang;Lee, Kwang-Su;Shin, Hyun-Cheol;Huh, Moo-Ryong
    • Asian Journal of Turfgrass Science
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    • v.25 no.1
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    • pp.112-117
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    • 2011
  • This research was conducted to determine the effect of the pre-treatment of mulberry charcoal on the salt tolerance response in Kentucky bluegrass 'Perfection'. As this results, 400 mM NaCl treatment reduced turf growth such a fresh and dry weight, and induced physiological damages like decreased chlorophyll content and increased electrolyte leakage. The pre-treatment of mulberry charcoal, however, mitigated those growth and physiological responses associated with NaCl stress, regardless of the concentrations of charcoal solution. Furthermore, it was observed that higher K ion concentration by mulberry charcoal pre-treatment reduced Na ion in shoot. This research suggests to be a possibility of planting turf grasses in reclaimed land or higher salt accumulated area using a mulberry charcoal treatment.

Transfer of Arsenic and Mercury from Stabilized Farmland Soil to Lettuce using Calcium Sulfate Fertilizer with Different Physical Properties as a Stabilizing Agent (안정화제로 사용된 황산칼슘비료의 물리적 형태에 따른 토양 비소 및 수은의 안정화와 식물체 전이특성)

  • Il-Ha Koh;Yo Seb Kwon;Min-Hyeon Lee;Jung-Eun Kim;So-Young Park;Ju In Ko;Won Hyun Ji
    • Economic and Environmental Geology
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    • v.56 no.5
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    • pp.619-628
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    • 2023
  • In this study, we investigated the feasibility of calcium sulfate fertilizer as a stabilizing agent for As and Hg contaminated farmland soil and its stabilization characteristics in 3 different physical forms (particulate, powder, and solution) through a pot experiment including 34 days of lettuce growth. As and Hg contents of the lettuce grown in the stabilized soils were decreased by at least 70%. However the lettuce yield of the soil stabilized with the solution agent was decreased by 46% due to the overabundance of the nutrients from the solution agent. Thus, if a solution-type agent is planned for agricultural farmland soil stabilization, additional tests for optimal dosage are needed to preserve vegetation growth. In Hg fractionation, a lower concentration of elemental fractions and a higher concentration of residual/sulfide fractions were identified in the soils stabilized with the solution, powder, and pariculate agents in descending order while there were no significant changes in As fractionation. Overall results suggest that calcium sulfate fertilizer can be used as a stabilizing agent, and a solution-type agent could be used when the operation of heavy machinery for the soil stabilization process is impossible.