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http://dx.doi.org/10.12791/KSBEC.2020.29.2.105

Effects of Lettuce Cultivation Using Optical Fiber in Closed Plant Factory  

Lee, Sanggyu (Division of Smart Farm Development, National Institute of Agricultural Science, RDA)
Lee, Jaesu (Division of Smart Farm Development, National Institute of Agricultural Science, RDA)
Won, Jinho (Division of Smart Farm Development, National Institute of Agricultural Science, RDA)
Publication Information
Journal of Bio-Environment Control / v.29, no.2, 2020 , pp. 105-109 More about this Journal
Abstract
This study was conducted to the improvement of solar light-based artificial light supply system and effect of lettuce cultivation. The artificial light supply system was consisted of units such as light source, power, system measurement and controller. The light source supply was composed of a solar transmitter and an LED lamp. The power supply consisted of an leakage breaker, SMPS, LED controller and relay. The solar transmitter was made of a quartz optical fiber with optimal light transmission. Artificial light used white lamp among LEDs. System measurement and control consisted of touch screen, Zigbee communication module and light quantity sensor. The results of test confirmed that the LED light is automatically activated when the intensity measured by the light intensity sensor is 200 μmolm-2s-1 or less. Moreover, the leaf length, root length, chlorophyll content and root fresh weight of optical fiber treatment was hight than LED lamp treatment. Therefore, it can be inferred that the energy-saving solar light collector device can be effective in the indoor lettuce production. However, the use of LED lamp is also recommended to assure the availability of sufficient sunlight in cloudy and rainy days.
Keywords
Artificial light; Lettuce(Lactuca sativa L.); Light supply; Optical fiber; Photosynthesis;
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Times Cited By KSCI : 4  (Citation Analysis)
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