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http://dx.doi.org/10.12791/KSBEC.2013.22.1.049

Effect of LED Light Wavelength on Chrysanthemum Growth  

Im, Jae Un (Dept. of Agricultural Eng., Gyeongsang National Univ. (Insti. of Agric. & Life Sci.))
Yoon, Yong Cheol (Dept. of Agricultural Eng., Gyeongsang National Univ. (Insti. of Agric. & Life Sci.))
Seo, Kwang Wook (The Korean Intellectual Property Office)
Kim, Kyu Hyeong (Dept. of Electronics and Telecommunications Research Institute)
Moon, Ae Kyung (Dept. of Electronics and Telecommunications Research Institute)
Kim, Hyeon Tae (Dept. of Bio-Industrial Machinery Eng., Gyeongsang National Univ. (Insti. of Agric. & Life Sci.))
Publication Information
Journal of Bio-Environment Control / v.22, no.1, 2013 , pp. 49-54 More about this Journal
Abstract
In this study, I was focusing on LED (Light Emitting Diode) light effect in growth of chrysanthemum. For this reason, I formed six monochromatic lights (red 650 nm, 647 nm, 622 nm, blue 463 nm, 450 nm, white), six mixed lights sources red : blue (9 : 1, 8 : 2, 7 : 3, 6 : 4, 5 : 5) and 3 control beds in light sources ratio between rad : blue (8 : 2) including sun light. It was totally 15 control beds. Depending on light investigation time in growth, 6/6 (on/off) was highest in the length of plant, the number of leaves, the fresh dry and leaf area. But statistical significance wasn't accepted in general. In case of monochromatic lights, length of plant and leaf area is biggest in the Blue 450 mm and the length of root is highest in RED 650 mm. Except for this 3 measuring points (length of plant, the number of leaves and fresh weight), sun light and white was highest. Besides there are monochromatic light effect but various wavelength range in light sources are needed to crop growth. In terms of mixed light resources, except for sun light, It turned out the length of plant is highest in the highest red light rate red : blue (9 : 1), and Red : white (7 : 3) is highest in fresh weight and dry weight. The sun light is the highest one in the leaf area. The results from LED light effect in growth of chrysanthemum are obviously effect on growth and building up the shape. We need to choose suitable light sources in the monochromatic lights and mixed lights for growing high quality of chrysanthemum or Supplemental Lighting.
Keywords
chlorophyll; chrysanthemum; environmental control; greenhouse; LED (Light Emitting Diode); light quality;
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Times Cited By KSCI : 2  (Citation Analysis)
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