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KMID : 1098420140220010032
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Korean Journal of Medicinal Crop Science
2014 Volume.22 No. 1 p.32 ~ p.37
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Effect of Ferric and Ferrous Iron Irrigation on Brown-Colored Symptom of Leaf in Panax ginseng C. A. Meyer
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Lee Sung-Woo
Park Kee-Choon
Lee Seung-Ho
Jang In-Bok
Park Kyung-Hoon
Kim Mi-Lan
Park Jin-Myeon
Kim Ki-Hong
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Abstract
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To study the cause of physiological disorder in leaf of ginseng cultivated at paddy soil, the degree of browncolored
symptom (BCS) and the contents of inorganic matter in leaf were investigated by irrigating the solution of ferric and
ferrous iron of 0.1 ~ 2.0%, and citric acid of 1.0 ~ 4.0% on bed soil, respectively. Ratio of BCS by variety was as high as
85.0% in Yoenpoong, while it was as low as 5.4%, 7.5% in Chunpoong and Hwangsook, respectively. The contents of
inorganic matter of leaf in Yoenpoong were lower in P2O5, Ca, and Mg, while it were higher in K, Fe, and Mn than other
variety. Iron solution caused BCS more distinctly when each ferric and ferrous iron were dissolved with 1.0% citric acid
than when each iron was dissolved without citric acid. Ferric iron caused BCS more effectively than ferrous iron. BCS
occurred in 4.0% citric acid was as same as 2.0% ferric iron mixed with 1.0% citric acid. Low P2O5 and high Fe content in
leaf appeared in both of artificial and natural symptoms. We concluded that excessive Fe uptake caused BCS to leaf because the solubility of iron was increased in condition of low soil pH.
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KEYWORD
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Panax ginseng, Variety, Brown-Colored Symptom, Iron, Citric Acid
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