Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Effects of Light-Quality Control on the Plant Growth in a Plant Factory System of Artificial Light Type

인공광 식물공장내 광질 제어가 작물생육에 미치는 영향

  • Heo, Jeong-Wook (Department of Agricultural Engineering, National Academy of Agricultural Science, Rural Development of Administration) ;
  • Baek, Jeong-Hyun (Department of Agricultural Engineering, National Academy of Agricultural Science, Rural Development of Administration)
  • 허정욱 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 백정현 (농촌진흥청 국립농업과학원 농업공학부)
  • Received : 2021.11.04
  • Accepted : 2021.11.16
  • Published : 2021.12.31
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Abstract

BACKGROUND: Horticultural plant growth under field and/or greenhouse conditions is affected by the climate changes (e.g., temperature, humidity, and rainfall). Therefore investigation of hydroponics on field horticultural crops is necessary for year-round production of the plants regardless of external environment changes under plant factory system with artificial light sources. METHODS AND RESULTS: Common sage (Salvia plebeia), nasturtium (Tropaeolum majus), and hooker chive (Allium hookeri) plants were hydroponically culturing in the plant factory with blue-red-white LEDs (Light-Emitting Diodes) and fluorescent lights (FLs). Leaf numbers of common sage under mixture LED and FL treatments were 134% and 98% greater, respectively than those in the greenhouse condition. In hooker chives, unfolded leaf numbers were 35% greater under the artificial lights and leaf elongation was inhibited by the conventional sunlight compared to the artificial light treatments. Absorption pattern of NO3-N composition in hydroponic solution was not affected by the different light qualities. CONCLUSION(S): Plant factory system with different light qualities could be applied for fresh-leaf production of common sage, nasturtium, and hooker chive plants culturing under field and/or greenhouse. Controlled light qualities in the system resulted in significantly higher hydroponic growth of the plants comparing to conventional greenhouse condition in present.

Keywords

Acknowledgement

This study was funded by a research program (PJ01481001) of Rural Development Administration (RDA), Republic of Korea.

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