English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

**Ginseng Research Division, Department of Herbal Crop Research, NIHHS, RDA, Eumseong 369-873, Korea.**Horticultural and Herbal Crop Environment Division, NIHHS, RDA, Suwon 440-706, Korea.ABSTRACT : To develop the practical cultivation for paddy field, we investigated the properties of paddy soil, growth char-acteristics and ginsenoside content of 6-year-old ginseng, Cheonpung variety between poor drainage class (PDC) and imper-fect drainage class (IDC). Groundwater level in PDC showed monthly small changes of 20~30㎝, while IDC showedmonthly great changes of 28~71 ㎝ depending on rainfall. Soil moisture content in PDC and IDC was 17.2%, 22.5%, respec-tively. Air temperature in IDC was lower than 0.3 ℃, while soil temperature was higher than 0.8 ℃ compare to PDC, respec-tively. Main soil color of PDC was grayish olive, while IDC was brownish olive. PDC showed yellowish mottles only atunderground of 20~40㎝, while IDC showed that at underground of 30~90㎝. IDC showed lower pH, EC, potassium, cal-cium and magnesium content, but higher organic matter, phosphate, and iron content than that of PDC, respectively. All ofEC, organic matter, potassium, calcium, and magnesium content were decreased, but iron content was increased at the sub-soil layers of PDC. All of EC, organic matter, phosphorus, and potassium content were decreased, but calcium and magne-sium content were increased at the subsoil layers of IDC. Root yield in IDC was more increased by 33% than that of PDC.The moisture content and rusty ratio of ginseng root in IDC were lower than that of PDC. Ginsenoside content in IDC washigher than that of PDC because the ratio of lateral and fine root showing relatively high content of ginsenoside was higherin IDC than that of PDC.Key Words : Panax ginseng, Poor Drainage Class, Imperfect Drainage Class, Paddy Soil, Root Yield, Ginsenoside

Comparison of Growth Characteristics and Ginsenosides Content of 6-Year-Old Ginseng (Panax ginseng C. A. Meyer) by Drainage Class in Paddy Field