Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Environmental Control in the Plant Factory System Influences Year-Round Production of Allium hookeri Leaves

삼채(Allium hookeri) 잎 연중생산을 위한 식물공장 환경제어 효과

  • Jeong-Wook Heo (Department of Agricultural Engineering, National Academy of Agricultural Science, Rural Development of Administration) ;
  • Jeong-Hyun Baek (Department of Agricultural Engineering, National Academy of Agricultural Science, Rural Development of Administration) ;
  • Sung-Hyen Lee (Department of Agrifood Resources, National Academy of Agricultural Science, Rural Development of Administration) ;
  • Min-Jeong Kim (Department of Agricultural Environment, National Academy of Agricultural Science, Rural Development of Administration) ;
  • Chang-Kee Shim (Department of Agricultural Environment, National Academy of Agricultural Science, Rural Development of Administration)
  • 허정욱 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 백정현 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 이성현 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 김민정 (농촌진흥청 국립농업과학원 농업환경부) ;
  • 심창기 (농촌진흥청 국립농업과학원 농업환경부)
  • Received : 2023.11.20
  • Accepted : 2023.11.28
  • Published : 2023.12.31
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Abstract

The demand for the fresh leaf of hooker chive, which is mainly used as functional roots and contains dietary sulfur or saponin, is increasing, but the leaves are only harvested 3-4 times per year under conventional field conditions. A plant factory system with different light qualities or intensities was applied for year-round production of the fresh leaves. Hooker chive (Allium hookeri) roots were hydroponically cultured under the plant factory with a mixture of blue plus red LEDs (Light-Emitting Diodes) and fluorescent lights for 50 weeks. Maximum leaf growth was attained with the 1.5 dS/m EC in the culture medium under the plant factory. The average leaf and shoot numbers of hooker chive grown hydroponically under a mixture of 200 µmol/m2/s LEDs increased by 147% and 140%, respectively compared to those under 100 µmol/m2/s LEDs at the 10th harvest. The leaf length of hooker chive grown under the LEDs treatment with the lowest light intensity significantly increased by 27% compared with the natural light treatment at the 10th harvest. However, there was no significant difference in leaf pigmentation between natural and 200 µmol/m2/s LEDs treatments. Plant factory with the mixture LEDs of blue and red lights can be applied for year-round production of hooker chive fresh leaves to ensure a stable supply of leafy vegetable throughout the year.

Keywords

Acknowledgement

This study was funded by a research program (PJ 01580201) of Rural Development Administration (RDA), Republic of Korea.

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