Analyses of Photosynthesis and Productivity of Paprika (Capsicum annuum L. Cupra) using Sulfur Plasma and High-Pressure Sodium Lamps as Supplemental Light Sources : 황 플라즈마 및 고압나트륨 램프를 이용한 보광에 따른 파프리카의 광합성 및 생산성 분석

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농업생명과학대학 식물생산과학부
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서울대학교 대학원
high-pressure sodiumsulfur plasmasupplemental lighting
학위논문 (석사)-- 서울대학교 대학원 : 식물생산과학부, 2017. 2. 손정익.
Supplemental lighting with artificial light sources is a practical method that enables normal growth and enhances the yield and quality of products. The objective of this study was to investigate the effect of sulfur plasma (SP) and high-pressure sodium (HPS) lamps as supplemental lighting sources on the growth and yield of paprika in greenhouses. For the SP and HPS lamps, the effects of primary lighting on plant growth was compared in walk chamber and that of supplemental lighting also compared in greenhouse. In the growth chamber
plant height, leaf area, stem diameter, number of leaves, fresh weight, and dry weight were measured every week at the SP and HPS lamps from 2 weeks after transplanting. In the greenhouse, no supplemental lighting (only sun light) was considered as the control. The supplemental lights were turned on when outside radiation became below 100 W m-2 from 07:00 to 21:00. From 3 weeks after supplemental lighting, the growth was measured every week while the number and weight of paprika fruits measured every two weeks. In the growth chamber, the growth of paprika was better at the SP lamps than the HPS lamps due to higher photosynthetic rate at the SP lamps than at the HPS lamps. In the greenhouse, the yield was higher at the supplemental lightings of the HPS and SP lamps than at the control, while the proportion of marketable yield was lower at the supplemental lightings than at the control. No significant differences were observed in the plant height, number of node, leaf length and fresh and dry weights between the SP and HPS treatments. However, at harvest, the number of fruits rather than the weight of fruits was higher at the SP lamps. It was suggested that new cultivation methods including fertigation strategy are needed to reflect the effect of supplementary lighting on plant growth.
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College of Agriculture and Life Sciences (농업생명과학대학)Dept. of Plant Science (식물생산과학부)Theses (Master's Degree_식물생산과학부)
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