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2020 Vol.29, Issue 2

Original Articles

Effects of Lettuce Cultivation Using Optical Fiber in Closed Plant Factory

폐쇄형 식물공장내 태양광 파이버를 이용한 상추 재배효과

Sanggyu Lee1
,
Jaesu Lee1*
,
Jinho Won1
이 상규1
,
이 재수1*
,
원 진호1
1Division of Smart Farm Development, National Institute of Agricultural Science, RDA, Jeonju 54875, Korea
1농촌진흥청 국립농업과학원 스마트팜개발과
*Corresponding author: butiman@korea.kr
30 April 2020. pp. 105-109
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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 suppl
Optical fiber, Photosynthesis

본 연구는 태양광 기반으로 인공광 병렬 광공급 시스템을 개발하고 상추 재배효과를 구명하기 위하여 수행하였다. 태양광 기반으로 인공광원을 공급하는 장치는 광원 공급부, 전원공급부, 시스템 계측 및 제어부로 구성하였다. 광원공급부는 태양광 전송장치(광파이버)와 LED 램프(인공광)로 구성하였고, 태양광 전송장치는 광 전송률이 우수한 석영재질의 광섬유(Optical fiber)로 제작되었으며, 인공광은 LED 중 White 램프를 사용하였다. 전원 공급부는 누전 차단기, SMPS, LED 제어기 및 릴레이로 구성하였다. 시스템계측 및 제어부는 터치스크린과 지그비(ZigBee) 통신모듈, 광량센서로 구성하였다. 구성한 장치의 성능시험 결과 광량센서로 측정된 강도가 200µmol·m-2·s-1 이하가 되면 자동적으로 LED 램프가 작동되어 보광하는 것을 확인하였다. 또한 본 장치를 활용하여 상추를 재배한 결과, 엽장, 뿌리길이, 엽록소 함량 및 지하부 생체중이 LED 처리보다 큰 것으로 나타났다. 따라서 본 장치는 화석연료 고갈 등으로 전기 사용에 제한이 올 때 폐쇄형 식물공장 같은 시설에서 작물을 재배할 수 있을 것으로 판단된다.

키워드
광공급
광섬유
광합성
상추(Lactuca sativa L.)
인공광
References

Literature Cited

1
Berridge, M.V., P.M. Herst, and A.S. Tan. 2005. Tetrazolium dyes as tools in cell biology: new insights into their cellular reduction. Biotechnol. Ann. Rev. 11:127-152.
10.1016/S1387-2656(05)11004-7
2
Choi, K.Y., E.Y. Yang, D.K. Park, Y.C. Kim, T.C. Seo, H.K. Yun, and H.D. Seo. 2005. Development of nutrient solution for hydroponics of cruciferae leaf vegetables based on nutrient-water absorption rate and the cation ratio. J. Bio- Env. Con. 144:289-297.
3
Intergovernmental Panel on Climate Change (IPCC). 2013. Climate change 2013: Contribution of working group I to the Fifth Assessment Report of the Inter governmental Panel on Climate Change. Cambridge University Press. Cambridge. United Kingdom and New York. NY. USA.
4
Jang, Y.S. 2005. The automatic system of plant factory. Res. Ext. 46:44-47.
5
Jeong, H.G., S.B. Han, B.M. Jung, E.J. Lee, and S.H. Lim. 2002. A study on solar light collector using fresnel lens film. J. of Kor. Solar Energy Soc. 22:81-86.
6
Jeong, H.J., W.S. Kim, Y.M. Kim, H.J. Han, and W.G. Choi. 2017. Electric lighting energy saving through the use of a fresnel lens based fiber-optic solar lighting system: Simulation and measurements. J. of Kor. Solar Energy Soc. 37:1-12.
10.7836/kses.2017.37.3.001
7
Kang, H.M., and I.S. Kim. 2007. Effect of nutrient solution composition modification on the internal quality of some of leaf vegetable in hydroponics. J. Bio-Env. Con. 16:348-351.
8
Kim, J.H., 2009. The present state and future of plant factory. Res. of KREI. 61:1-19.
9
Kim, Y.H., and J.S. Lee. 2016. Growth and contents of anthocyanins and ascorbic acid in lettuce as affected by supplemental UV-A LED irradiation with different light quality and photoperiod. Kor. J. Hort. Sci. Technol. 34: 596-606.
10.12972/kjhst.20160061
10
Kim, Y.S., and K.W. Kwon. 2009. Skin load reduction technology of building. Korea Green Building Council. pp.38-41.
11
Lee, C.S., J.M. Kim, Y.M. Park, T.K. Sung, C.B. Joung, S.H. Kang, and B.C. Kim. 2012. The development of solar tracking concave mirror type daylighting system. The society of air-conditioning and refrigerating engineeris of Korea. summer conference. 12-S-209.
12
Lee, J.G., S.S. Oh, S.H. Cha, Y.A. Jang, S.Y. Kim, Y.C. Um, and S.R. Cheong. 2010. Effects of red/blue light ratio and short-term light quality conversion on growth and anthocyanin contents of baby leaf lettuce. J. Bio-Env. Con. 19:351-359.
13
Lee, S.G., J.S. Lee, and J.H. Won. 2019. Analysis of light traits in a solar light-collector device and its effects on lettuce growth at an early growth stage. J. Environ. Sci. Inter. 28:1019-1025.
10.5322/JESI.2019.28.11.1019
14
Lee, S.R., T.H. Kang, C.S. Han, and M.M. Oh. 2015. Air anions improve growth and mineral content of kale in plant factories. Hortic Environ Biotechnol. 56:462-471.
10.1007/s13580-015-0035-z
15
Park, J.E., Y.G. Park, B.R. Jeong, and S.J. Hwang. 2012. Growth and anthocyanin content of lettuce as affected by artificial light source and photoperiod in a closed-type plant production system. Kor. J. Hort. Sci. Technol. 30:673-679.
10.7235/hort.2012.12020
16
Park, K.S., K. Bekhzod, J.K. Kwon, and J.E. Son. 2016. Development of a coupled photosynthetic model of sweet basil hydroponically grown in plant factories. Hortic Environ Biotechnol. 57:20-26.
10.1007/s13580-016-0019-7
17
Park, M.H., and Y.B. Lee. 1999. Effects of CO2 concentration, light intensity and nutrient level on the growth of leaf lettuce in a plant factory. J. Kor. Soc. Hort. Sci. 40:431-435.
18
Seo, T.C., H.K. Yun, and C.H. Zhang. 2006. Effect of surfactant addition on Ge absorption and growth of pak-choi and lettuce in DFT culture. J. Bio-Env. Con. 15:130-135.
19
Song, M.J., 2014. Air anion enhances growth of several edible sprouts and lettuce in a closed-type plant production system. Master's Thesis. Chungbuk National University. Cheongju. Korea. 34-43.
20
Um, Y.C., S.S. Oh, J.G. Lee, S.Y. Kim, and Y.A. Jang. 2010. The development of container-type plant factory and growth of leafy vegetables as affected by different light source. J. Bio-Env. Con. 19:333-342.
21
World Meteorological Organization (WMO). 2019. The global climate in 2015-2019. World Meteorological Organization. 21pp.
22
Yun, H.K., C.H. Zhang, T.C. Seo, and J.W. Lee. 2006. Effect of selenium application concentration and periods on growth in garlic. J. Bio-Env. Con. 15:346-351.
Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 29
  • No :2
  • Pages :105-109
  • Received Date : 2020-02-27
  • Revised Date : 2020-03-17
  • Accepted Date : 2020-04-09
  • DOI :https://doi.org/10.12791/KSBEC.2020.29.2.105
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