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http://dx.doi.org/10.4313/JKEM.2015.28.2.142

A Study on Growth of the Green Leaf Lettuce Depends on PPFD and Light Quality of LED Lighting Source for Growing Plant  

Yang, Jun-Hyuk (Department of Information & Communication Engineering, WonKwang University)
Choi, Won-Ho (Department of Information & Communication Engineering, WonKwang University)
Park, Noh-Joon (LEDst Co., Ltd.)
Park, Dae-Hee (Department of Information & Communication Engineering, WonKwang University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.28, no.2, 2015 , pp. 142-147 More about this Journal
Abstract
The artificial light sources for growth of plant are usually high-pressure sodium lamp, metal haloids lamp, and fluorescent light; however, these light sources have relatively weaker Red and Blue lights that are necessary for growth of plants. Especially the effect of Photosynthetic Photon Flux Density (PPFD) is pointed out as the weakness. Meanwhile, LED light source can be selected by specific wavelength to greatly improve the effect of PPFD. In this regard, this paper aims to investigate the promotion of plant growth by measuring photosynthetic photon flux density (hereafter referred to as PPFD) according to changes in light quality of the LED light sources. Towards this end, LED light sources for plant growth were produced with 4 kinds of mono-chromatic lights and 6 kinds of combined lights by mixing red, blue, green and white lights. A comparative analysis was conducted to investigate the effects of optical properties and PPFD on plants (green leaf lettuce) using the produced light sources. The results monochromatic light has fastest growth rate, but plant growth conditions have poor. This being so, mixed light is suitable for the green leaf lettuce.
Keywords
Green leaf lettuce; Plant growth; LED light design; Wavelength; PPFD;
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  • Reference
1 S. W. Kang, World Science (Worldscience, Seoul, 2010) p. 27-37, 79-91.
2 S. C. Hong, National Academy of Agricultural Science, (2012).
3 Y. H. Kim, National Academy of Agricultural Science, (2013).
4 H. H. Moon, Journal of The Korean Horticultural Science & Technology, 28, 158 (2010).
5 C. G. Yoon and H. K. Choi Journal of The Korean Institute of Illuminating and Electrical Installation Engineers, 25, 14 (2012).
6 M. K. Cha, J. S. Kim, and Y. Y. Cho, Journal of The Korean Bio-environment Control, 21, 169 (2012).
7 Y. H. Kim, Journal of The Korean Society of Manufacturing Process Engineers, 25, 115 (1999).