Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Characterizing the Effects of Microclimate on the Growth of Ginseng Seedlings using Multi-layer Bed Production Facilities

다층베드시설을 이용한 묘삼 생산 시 미기상 환경과 생육특성

  • 장명환 (경상북도농업기술원 풍기인삼연구소) ;
  • 김승한 (경상북도농업기술원 풍기인삼연구소) ;
  • 최양애 (경상북도농업기술원 풍기인삼연구소) ;
  • 원도연 (경상북도농업기술원 풍기인삼연구소) ;
  • 김임수 (경상북도농업기술원 풍기인삼연구소)
  • Received : 2018.10.22
  • Accepted : 2018.12.03
  • Published : 2018.12.30
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Abstract

Background: The growth process of ginseng seedlings is very important in producing good quality ginseng. This study was carried out to investigate the effects of different microclimates on the growth characteristics of ginseng seedlings in a multi-layer bed facility. Methods and Results: Ginseng seedlings were cultivated in a three-layer bed facility. The air temperatures on the first and second floors were similar, while that on the third floor was about $1-4^{\circ}C$ higher than that on the other floors. The vapor pressure deficit (VPD) was higher inside than on the outside of the facility, and that on third floor was the highest in the multi-layer bed system. The photosynthetic rate, chlorophyll fluorescence, and growth characteristics of ginseng seedlings did not significantly differ among the three floors. The yield of ginseng seedlings was the highest at $721g/1.62m^2$ on the first floor. Conclusions: It was found that microclimate plays an important role in growing ginseng seedlings in multi-layer bed facilities, and therefore proper environmental control is important. In addition, producing ginseng seedlings using multi-layer bed facilities is a technology that is expected to provide a way to overcome climate change and stabilize ginseng production.

Keywords

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Fig. 1. The front part of the multi-layer bed facility and the appearance of the 1st (B), 2nd (C) and 3rd (D) floors where the ginseng seedlings were grown.

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Fig. 2. Changes of air temperature in multi-layer bed system.

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Fig. 3. Changes of soil temperature in multi-layer bed system.

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Fig. 4. Changes of relative humidity in multi-layer bed system.

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Fig. 5. Changes of vapor pressure deficit (VPD) in multi-layer bed system.

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Fig. 6. Changes of soil moisture in multi-layer bed system.

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Fig. 7. Changes of light intensity in multi-layer bed system.

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Fig. 8. Underground parts of ginseng seedlings in the multi-layer bed facilities.

Table 1. Physico-chemical properties of bed soil1).

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Table 2. Characteristics of photosynthesis in ginseng seedling.

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Table 3. Characteristics of chlorophyll fluorescence of ginseng seedling.

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Table 4. Growth characteristics of the underground parts in ginseng seedling.

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