Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Selection of Supplemental Light Source for Greenhouse Cultivation of Pepper during Low Radiation Period through Growth and Economic Analysis

생육 및 경제성 분석을 통한 약광기 고추의 온실재배를 위한 적정 보광 광원 선정

  • Hwang, Hee Sung (Division of Crop Science, Graduate School of Gyeongsang National University) ;
  • Lee, Kwang Hui (Division of Crop Science, Graduate School of Gyeongsang National University) ;
  • Jeong, Hyeon Woo (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Hwang, Seung Jae (Division of Horticultural Science, College of Agriculture & Life Sciences, Gyeongsang National University)
  • 황희성 (경상국립대학교 대학원 작물생산과학부) ;
  • 이광휘 (경상국립대학교 대학원 작물생산과학부) ;
  • 정현우 (경상국립대학교 대학원 응용생명과학부) ;
  • 황승재 (경상국립대학교 농업생명과학대학 원예과학부)
  • Received : 2022.06.15
  • Accepted : 2022.07.22
  • Published : 2022.07.31
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Abstract

To produce a high quality crop, light is an essential environmental factor in greenhouse cultivation. In the winter season, solar radiation is weak than other season. Therefore, using supplemental light during a low radiation period can increase the crop growth and yield. This study was conducted to select the economical supplemental light source for greenhouse cultivation in pepper during the low radiation period. The green pepper (Capsicum annuum 'Super Cheongyang') was transplanted on 5 September 2019. Supplemental lighting treatment was conducted from 1 January 2020 to 31 March 2020. RB LED (red and blue LED, red:blue = 7:3), W LED (white LED, R:G:B = 5:3:2), and HPS (high-pressure sodium lamp) were used as the supplemental light source. Non-treatment was used as the control. The plant height, SPAD, and number of nodes of pepper plants have no significant differences by supplemental light sources. However, the number of ramifications plants was the greatest in RB LED light source. Moreover, supplemental lighting increased photosynthesis of the pepper plant, and especially, the RB LED had the highest photosynthesis rate during supplemental lighting period. Also, the yield of pepper increased in the supplemental lighting treatment than in the control, and the RB LED had the greatest yield than other light sources. The electricity consumption was the highest in W LED and the lowest in HPS light. Through the economic analysis, the RB LED had high economic efficiency. In conclusion, these results suggest that using RB LED for supplemental light source during low radiation in pepper greenhouse increase the yield and economic feasibility.

고품질의 작물을 재배하기 위해 광은 필수적인 환경조건이다. 겨울철에는 다른 계절에 비해 일사량이 저조하므로 보광처리를 이용해 작물의 생육과 수확량을 증대시킬 수 있다. 본 연구는 약광기 동안 고추 온실재배를 위한 경제적인 보광 광원을 선발하기 위해 수행되었다. 풋고추(Capsicum annuum 'Super Cheongyang')는 2019년 9월 5일에 정식하였다. 보광처리는 2020년 1월 1일부터 2020년 3월 31일까지 수행되었다. White LED(R:G:B = 5:3:2, W LED), RB LED(red:blue = 7:3, RB LED), 고압나트륨등(high pressure sodium lamp, HPS)을 광원으로 사용하였다. 무처리를 대조구로 사용하였다. 고추의 초장, SPAD, 마디 수는 보광 광원에 따른 유의적인 차이가 없었다. 그러나 분지 수는 RB LED 광원에서 가장 많았다. 또한 보광은 고추의 광합성을 증가시켰으며, 특히 RB LED에서 보광기간 동안 가장 높은 광합성률을 보였다. 또한 고추의 수확량은 보광처리에서 증가하였고, RB LED는 다른 광원에 비해 가장 높은 수확량을 보였다. 소비전력은 W LED가 가장 높았고 HPS 조명이 가장 낮았다. 경제적인 측면에서 RB LED를 이용한 보광처리는 다른 광원에 비해 높은 경제성을 가졌다. 결론적으로 이러한 결과는 고추 온실에서 약광기 동안 보광 광원으로 RB LED를 사용하는 것이 수확량과 경제성을 향상시킬 수 있을 것으로 판단된다.

Keywords

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