Status and Changes in Chemical Properties of Paddy Soil in Korea

Kang, Seong-Soo; Roh, Ahn-Sung; Choi, Seung‐Chul; Kim, Young-Sang; Kim, Hyun-Ju; Choi, Moon-Tae; Ahn, Byung-Koo; Kim, Hyun Woo; Jeong, Byung‐Hoon; Park, Jun-Hong; Lee, Young Han; Yang, Sang-Ho; Ryu, Jae‐Chun; Jang, Young-Sun; Kim, Myeong-Sook; Sonn, Yeon-Kyu; Lee, Chang‐Hoon; Ha, Sang-Gun; Lee, Deok-Bae; Kim, Yoo-Hak

doi:10.7745/kjssf.2012.45.6.968

Cited by 34 publications

(14 citation statements)

References 7 publications

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“…그러나 유기물함량이 높은 사질토양은 한랭한 지역에서 일 반적이며, 한국과 같은 온대지방은 유기물 분해가 빨라 유기 물이 다량 축적된 사토를 확보하기 매우 어렵다 (Goncalves et al, 1994;Singh and Gupta, 1977 (Kim and Jo, 1998;Kim et al, 2003;Retamales and Hancock, 2012 보다 상대적으로 높은 수준이다 (Kang et al, 2012(Kang et al, , 2014 …”

Section: Resultsunclassified

“…하고 있다 (Kang et al, 2012(Kang et al, , 2014Kim and Jo, 1998;Kim et al, 2003). 반면 점토와 미사의 함량증가는 상대적으로 배수가 불량해 지는 단점을 가지고 있다 (Billings, 1987;Davidson and Lefebvre, 1993;Sands and Bowen, 1978;Sands et al, 1979;Theodorou et al, 1991;Yapa et al, 1988).…”

Section: 한편 국내 농경지 토양의 표토 토성은 사양토 양토 그 리고 미사질양토가 비슷한 비율로 전체 토성의 90%unclassified

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The Effect of Soil Texture on Fruits and Growth Properties in Rabbiteye Blueberries

Kim¹,

Kwack²,

Lee³

et al. 2015

Korean Journal of Soil Science and Fertilizer

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Section: Resultsunclassified

Section: 한편 국내 농경지 토양의 표토 토성은 사양토 양토 그 리고 미사질양토가 비슷한 비율로 전체 토성의 90%unclassified

The Effect of Soil Texture on Fruits and Growth Properties in Rabbiteye Blueberries

Kim¹,

Kwack²,

Lee³

et al. 2015

Korean Journal of Soil Science and Fertilizer

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“…우리나라 논토양에서 치환성 칼륨의 적정범위는 0.25~0.30 cmol c kg -1 (NAAS, 2010)이고, 이 범위에 속하는 비율 은 1999년에 13.7%에서 2011년 15.4%로 증가되었으며 적정보다 부족한 비율은 1999년에 46.0%에서 2011년 51.1%로 증가하였다 (Kang et al, 2012). 또한, 치환성 칼륨의 평균값은 1999년에 0.32 cmol c kg -1 에서 2011년 0.30 cmol c kg -1 으로 감소하는 경향이었다.…”

Section: Introductionunclassified

Changes of Exchangeable K in Paddy Soil Applied Potassium Fertilizer for 62 Years

Kim

Park

et al. 2018

Korean J. Soil. Sci. Fert.

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Potassium (K) is a main macronutrient for rice but deficit of potassium can have an effect on the productivity of rice and sustainability of paddy soil fertility. In an experiment conducted at the long-term research field of the National Institute of Agricultural Science, we investigated the effects of mineral fertilizer and rice straw compost on dynamic and balance of potassium under a rice single system. The treatments were no fertilization (No fert.), inorganic fertilization (N, NPK), and inorganic fertilizer plus rice straw compost (NPKC). The concentrations of exchangeable K in all treatments were ranged from 0.08 to 0.23 cmol c kg -1 with fluctuation by a 10-year cycle. Especially, exchangeable potassium in NPKC treatment was higher 0.05~0.19 cmol c kg -1 than that of No fert. treatment. K balance in all treatments resulted in the negative level that ranged from -3.4 to -36.4 cmol c kg -1 . These were attributed to supply from K minerals of soil that were identified muscovite, biotite, microcline, and anorthoclase.

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“…Results and Discussion : Physico-chemical properties in non-contaminated paddy soils in Korea surveyed in 2011 (Kang et al, 2012) 2)…”

Section: Introductionmentioning

confidence: 99%

“…르게 분포하였고, 평균 수치는 6.2로 우리나라 농경지 논토양의 평균인 5.9 및 범위 4.1 ~ 8.4와 비슷한 수치를 보였다(Kang et al, 2012). 유기물 함량은 9.22 ~ 88.91 g kg -1 으로 분포를 보였고 평균 함량은 44.46 g kg -1 우리나라 농경지 토양의 평균 수치 26.0 g kg -1 보다는 높은 경향을 보였다(Kang et al, 2012). 이는 본 실험에서 습식 산화법이 아닌 강…”

unclassified

Prediction of Arsenic Uptake by Rice in the Paddy Fields Vulnerable to Arsenic Contamination

Lee¹,

Kang²,

Kim³

et al. 2017

Korean J. Soil. Sci. Fert.

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There is an increasing concern over arsenic (As) contamination in rice. This study was conducted to develope a prediction model for As uptake by rice based on the physico-chemical properties of soil. Soil and brown rice samples were collected from 46 sites in paddy fields near three different areas of closed mines and industrial complexes. Total As concentration, soil pH, Al oxide, available phosphorus (avail-P), organic matter (OM) content, and clay content in the soil samples were determined. Also, 1.0 N HCl, 1.0 M NH 4 NO 3 , 0.01 M Ca(NO 3 ) 2 , and Mehlich 3 extractable-As in the soils were measured as phytoavailable As concentration in soil. Total As concentration in brown rice samples was also determined. Relationships among As concentrations in brown rice, total As concentrations in soils, and selected soil properties were as follows: As concentration in brown rice was negatively correlated with soil pH value, where as it was positively correlated with Al oxide concentration, avail-P concentration, and OM content in soil. In addition, the concentration of As in brown rice was statistically correlated only with 1.0 N HCl-extractable As in soil. Also, using multiple stepwise regression analysis, a modelling equation was created to predict As concentration in brown rice as affected by selected soil properties including soil As concentration. Prediction of As uptake by rice was delineated by the model [As in brown rice = 0.352 + 0.00109 * HCl extractable As in soil + 0.00002 * Al oxide + 0.0097 * OM + 0.00061 * avail-P -0.0332 * soil pH] (R = 0.714 *** ). The concentrations of As in brown rice estimated by the modelling equation were statistically acceptable because normalized mean error (NME) and normalized root mean square error (NRMSE) values were -0.055 and 0.2229, respectively, when compared with measured As concentration in the plant.

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Status and Changes in Chemical Properties of Paddy Soil in Korea

Cited by 34 publications

References 7 publications

The Effect of Soil Texture on Fruits and Growth Properties in Rabbiteye Blueberries

The Effect of Soil Texture on Fruits and Growth Properties in Rabbiteye Blueberries

Changes of Exchangeable K in Paddy Soil Applied Potassium Fertilizer for 62 Years

Prediction of Arsenic Uptake by Rice in the Paddy Fields Vulnerable to Arsenic Contamination

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