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KMID : 1098420150230020150
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Korean Journal of Medicinal Crop Science
2015 Volume.23 No. 2 p.150 ~ p.154
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Effect of Application Level of Calcium Hydroxide on Brown-Leaf Symptom and Root Yield of Panax ginseng Cultivated in Paddy Soil
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Lee Sung-Woo
Park Kyung-Hoon
Lee Seung-Ho
Jang In-Bok
Jin Mei-Lan
Kim Ki-Hong
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Abstract
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Physiological disorders such as symptoms in leaf colored with brown spots are so many occurred in ginseng garden cultivated with paddy soil. This study was carried out to inhibit the symptoms of brown-colored leaf in 3-year-old ginseng by fertilizing calcium hydroxide [Ca(OH)2] of 100 ~ 400 ㎏ per 10a on paddy soil before transplant of seedling. Soil pH was rapidly increased, while Fe was decreased in soil by the increase of application level of calcium hydroxide. Soil pH was increased from 4.53 to 6.18 when calcium hydroxide was fertilized at level of 100kg per 10a. The content of Fe in ginseng
leaf was decreased more than the control by fertilizing calcium hydroxide in soil. Ratio of brown-colored leaf and plant
height and leaf area were decreased by the increase of calcium hydroxide. Ratio of survived root and yield of root showed the peak at the application level of 100 ㎏ per 10a, and both of them were gradually decreased by the increase of calcium
hydroxide. The decrease of missing plant rate above the application level of 200 ㎏ per 10a had a negative effect on the
decrease of yield of root.
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KEYWORD
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Calcium Hydroxide, Iron, Leaf Discoloration, Panax ginseng, Paddy Soil
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