Effect of laser-diode light on growth of Lactuca sativa L
AbstractAbstract
[en] Development of an effective, high-power, low-cost, artificial light source for use in plant-growing facilities would be very beneficial for plant production. Recently, the laser-diode lamp was proposed as a new type of light source for plant production. The advantages of the laser-diode lamp over conventional light sources are its high electrical-to-optical power conversion efficiency, low thermal radiation, easy set-up for high power and pulse irradiation, small weight and small volume for mounting, and selectivity for proper wavelength. Because laser light itself differs from the light sources presently used in plant growing, we confirmed the possibility of growing plants under the laser-diode light using lettuces. Lettuce seedlings with 5-6 leaves were grown under a laser-diode lamp panel with 30 pieces of high-power and high-efficiency AlGaInP laser-diodes. The power of each laser-diode lamp was 500 mW, and the wavelength was 680 nm, which was efficient for photosynthesis. The lettuce plants were able to grow under the laser-diode light. However, plants were lighter and had thinner leaves than those grown under high-pressure sodium lamps. (author)
Primary Subject
Source
FAO/AGRIS record; ARN: JP2000004745; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Journal of Society of High Technology in Agriculture; ISSN 0918-6638; ; v. 12(2); p. 93-98
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Descriptors (DEI)
Descriptors (DEC)
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