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KMID : 1098420130210020118
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Korean Journal of Medicinal Crop Science
2013 Volume.21 No. 2 p.118 ~ p.123
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Growth Characteristics and Ginsenoside Contents of 6-Year-Old Ginseng (Panax ginseng C. A. Meyer) by Shade Materials in Paddy Field
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Lee Sung-Woo
Park Kee-Choon
Lee Seung-Ho
Kim Geum-Soog
Jang In-Bok
Kim Yong-Burm
Cha Sun-Woo
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Abstract
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This study was carried out to select optimal shade materials among four-layered polyethylene (PE) net(FLPN), aluminium-coated PE sheet (APSS), and blue PE sheet (BPSS) in condition of paddy field cultivated 6-year-old ginseng.
The order of light-penetrated ratio and air temperature by shade materials was BPSS > APSS > FLPN. Light-penetrated
ratio of BPSS before two fold shade was more 3 times and 2 times than that of FLPN and APSS, respectively. Air temperature of BPSS was also higher 1.6o C and 1.4o C than that of FLPN and APSS, respectively. BPSS showed good cultural environment because all of light-penetrated ratio and air temperature were become higher in spring and fall season
but lower in summer season by additional shade with two-layered PE net. Survived-leaf ratio was highest in BPSS and lowest in FLPN causing a little water leak on a rainy day. Rusty-root ratio was also highest in FLPN because soil moisture content was increased by water leak. The order of root yield was BPSS > APSS > FLPN, and the cause of highest yield in BPSS was higher light-penetrated ratio during spring and fall season, higher survived-leaf ratio, and lower rusty-root ratio than that of APSS and FLPN. BPSS showed highest total ginsenoside content because of high light-penetrated ratio, blue light effect, and the difference in dry matter partitioning ratio such as low taproot ratio, and high lateral root ratio.
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KEYWORD
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Ginseng, Shade Material, Root Yield, Ginsenoside, Paddy Field
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