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http://dx.doi.org/10.5142/JGR.2004.28.4.196

Effect of Light Transmittance Control on the Root Yield and Quality during the Growing Season of Panax ginseng  

Cheon, Seong-Ki (KT&G Central Research Institute)
Lee, Tae-Su (KT&G Central Research Institute)
Yoon, Jong-Hyuk (KT&G Central Research Institute)
Lee, Sung-Sik (KT&G Central Research Institute)
Mok, Sung-Kyun (Korea Ginseng Corp.,)
Publication Information
Journal of Ginseng Research / v.28, no.4, 2004 , pp. 196-200 More about this Journal
Abstract
This study was conducted to compare the root weight, yield, quality of fresh and red ginseng roots and crude saponin content in roots between fixing light transmittance(Control) and changing light transmittance(C.L.T.) during the ginseng growing seasons. The root weight in C.L.T. was higher than control by $35{\%}$ in early growth stage, $28{\%}$ in middle growth stage and $26{\%}$ in late growth stage in 6 years old ginseng plant. Root yield per 10a in C.L.T. was increased about $40{\%}$ as compared with that of control, also 1st and 2nd grade of fresh ginseng roots in C.L.T. was higher $(50.3{\%})$ compared with that $(12.9{\%})$ of control. The specific gravity of ginseng roots grown under the C.L.T. was exhibited the sig­nificant difference than control during the growing season in 4 and 6 years old ginseng plants. Red ginseng quality in C.L.T. was not only improved remarkably due to the increasement of heaven and earth grade red ginseng but also increased in crude saponin content than control. Therefore it needs to change the light transmittance(increasing light dur­ing low temperature periods and decreasing light during high temperature period) during the growing season for high yield and good qualities of ginseng roots.
Keywords
Root weight; yield; fresh ginseng quality; specific gravity; red ginseng quality; crude saponin content;
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Times Cited By KSCI : 1  (Citation Analysis)
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