Abstract
When producing seedling scions/rootstocks in a plant factory with artificial lighting (PFAL), uniformity of the lighting environment is an important factor affecting seedling quality in terms of morphological traits, growth, and development. The objectives of this study were to propose an optimal light emitting diodes (LEDs) bar array in a PFAL by 3D ray-tracing simulation and to evaluate the growth of cucumber and watermelon scions/rootstocks using the proposed PFAL light environment. In order to prevent the concentration of light in the center, 7 scenarios were set by adjusting the position of 5 LEDs bars. Light uniformity was verified with 3D ray-tracing simulation. Based on the selected array scenario, LEDs were installed in the module. The simulated and measured light intensity values at the same module locations were compared. Additionally, the growth characteristics of cucumber and watermelon seedlings grown in PFAL were investigated. Among the LEDs array scenarios, scenario seven with the coefficient of variation (CV) value of 18.5% had the highest illuminance value of 267.5 µmol m− 2 s− 1. When comparing the simulated and measured light intensities in an empty module without plants, R2 = 0.90 and RMSE = 15.09 were obtained, which was consistent at a high level. In this study, we proposed a lighting arrangement for uniform light distribution in PFAL during the production of cucumber and watermelon seedlings, which is expected to help in stable seedling year-round production.
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References
Akiyama T, Kozai T (2016) Light environment in the cultivation space of plant factory with LEDs. LED lighting for urban agriculture. Springer, Singapore, pp 91–109
An S, Park SW, Kwack Y (2020) Growth of cucumber scions, rootstocks, and grafted seedlings as affected by different irrigation regimes during cultivation of ‘Joenbaekdadagi’and ‘Heukjong’seedlings in a plant factory with artificial lighting. Agronomy 10:1943. https://doi.org/10.3390/agronomy10121943
An S, Lee HJ, Sim HS, Ahn SR, Kim ST, Kim SK (2021) Profiles of environmental parameters in a plant factory with artificial lighting and evaluation on growth of cucumber seedlings. J Bio-Environ Cont 30:126–132. https://doi.org/10.12791/KSBEC.2021.30.2.126
Balázs L, Dombi Z, Csambalik L, Sipos L (2022) Characterizing the spatial uniformity of light intensity and spectrum for indoor crop production. Horticulturae 8:644
Currey CJ, Hutchinson VA, Lopez RG (2012) Growth, morphology, and quality of rooted cuttings of several herbaceous annual bedding plants are influenced by photosynthetic daily light integral during root development. HortScience 47:25–30. https://doi.org/10.21273/HORTSCI.47.1.25
Despommier D (2011) The vertical farm: controlled environment agriculture carried out in tall buildings would create greater food safety and security for large urban populations. J für Verbraucherschutz Lebensmittelsicherheit 6:233–236. https://doi.org/10.1007/s00003-010-0654-3
Dou H, Niu G, Gu M, Masabni JG (2017) Effects of light quality on growth and phytonutrient accumulation of herbs under controlled environments. Horticulturae 3:36. https://doi.org/10.3390/horticulturae3020036
Graamans L, van den Dobbelsteen A, Meinen E, Stanghellini C (2017) Plant factories; crop transpiration and energy balance. Agri Sys 153:138–147. https://doi.org/10.1016/j.agsy.2017.01.003
Gruda N (2005) Impact of environmental factors on product quality of greenhouse vegetables for fresh consumption. Crit Rev Plant Sci 24:227–247. https://doi.org/10.1080/07352680591008628
Hernández R, Eguchi T, Deveci M, Kubota C (2016) Tomato seedling physiological responses under different percentages of blue and red photon flux ratios using LEDs and cool white fluorescent lamps. Sci Hort 213:270–280. https://doi.org/10.1016/j.scienta.2016.11.005
Hitz T, Henke M, Graeff-Hönninger S, Munz S (2019) Three-dimensional simulation of light spectrum and intensity within an LED growth chamber. Comput Electron Agric 156:540–548. https://doi.org/10.1016/j.compag.2018.11.043
Hwang H, An S, Lee B, Chun C (2020) Improvement of growth and morphology of vegetable seedlings with supplemental far-red enriched LED lights in a plant factory. Horticulturae 6:109. https://doi.org/10.3390/horticulturae6040109
Jang Y, Goto E, Ishigami Y, Mun B, Chun C (2011) Effects of light intensity and relative humidity on photosynthesis, growth and graft-take of grafted cucumber seedlings during healing and acclimatization. Hortic Environ Biotechnol 52:331–338. https://doi.org/10.1007/s13580-011-0009-8
Kim J, Kang WH, Son JE (2020) Interpretation and evaluation of electrical lighting in plant factories with ray-tracing simulation and 3D plant modeling. Agronomy 10:1545. https://doi.org/10.3390/agronomy10101545
Kitaya Y, Niu G, Kozai T, Ohashi M (1998) Photosynthetic photon flux, photoperiod, and CO2 concentration affect growth and morphology of lettuce plug transplants. HortScience 33:988–991. https://doi.org/10.21273/HORTSCI.33.6.988
Kozai T (2012) Plant factory with artificial light. Ohmsha, Tokyo, p 166
Kozai T (2013) Resource use efficiency of closed plant production system with artificial light: concept, estimation and application to plant factory. Proc Japan Acad Ser B 89:447–461. https://doi.org/10.2183/pjab.89.447
Kozai T, Niu G (2016) Plant factory as a resource-efficient closed plant production system. Plant Factory. Elsevier, pp. 69–90
Kozai T, Niu G (2020) Role of the plant factory with artificial lighting in urban areas, Plant Factory. Elsevier, pp. 7–34
Kozai T, Kubota C, Chun C, Afreen F, Ohyama K (2000) Necessity and concept of the closed transplant production system, transplant production in the 21st century. Springer, Cham, pp 3–19
Kyriacou MC, Rouphael Y, Colla G, Zrenner R, Schwarz D (2017) Vegetable grafting: the implications of a growing agronomic imperative for vegetable fruit quality and nutritive value. Front Plant Sci 8:741. https://doi.org/10.3389/fpls.2017.00741
Lee JM, Kubota C, Tsao S, Bie Z, Echevarria PH, Morra L, Oda M (2010) Current status of vegetable grafting: diffusion, grafting techniques, automation. Sci Hortic 127:93–105. https://doi.org/10.1016/j.scienta.2010.08.003
Llewellyn D, Golem S, Foley E, Dinka S, Jones AMP, Zheng Y (2022) Indoor grown cannabis yield increased proportionally with light intensity, but ultraviolet radiation did not affect yield or cannabinoid content. Front Plant Sci 13:974018
Moreno I, Avendaño-Alejo M, Tzonchev RI (2006) Designing light-emitting diode arrays for uniform near-field irradiance. Appl Opt 45:2265–2272
Nagai T, Makino A (2009) Differences between rice and wheat in temperature responses of photosynthesis and plant growth. Plant Cell Physiol 50:744–755. https://doi.org/10.1093/pcp/pcp029
Nian L, Pei X, Zhao Z, Wang X (2019) Review of optical designs for light-emitting diode packaging. IEEE Trans Compon Packag Manuf Technol 9:642–648
Oda M, Tsuji K, Sasaki H (1993) Effect of hypocotyl morphology on survival rate and growth of cucumber seedlings grafted on Cucurbita spp. Japan Agric Res Quar 26:259–259
Pan T, Ding J, Qin G, Wang Y, Xi L, Yang J, Zou Z (2019) Interaction of supplementary light and CO2 enrichment improves growth, photosynthesis, yield, and quality of tomato in autumn through spring greenhouse production. HortScience 54:246–252
SharathKumar M, Heuvelink E, Marcelis LF (2020) Vertical farming: moving from genetic to environmental modification. Trends Plant Sci 25:724–727. https://doi.org/10.1016/j.tplants.2020.05.012
Vu NT, Kim YS, Kang HM, Kim IS (2014) Influence of short-term irradiation during pre-and post-grafting period on the graft-take ratio and quality of tomato seedlings. Hortic Environ Biotechnol 55:27–35. https://doi.org/10.1007/s13580-014-0115-5
Yokoi S (2007) Effects of planting density and air current speed on the growth and that uniformity of tomato plug seedlings in a closed transplant production system. J Shita 19:159–166. https://doi.org/10.2525/shita.19.159
Yokoi S, Goto E, Kozai T, Nishimura M, Taguchi K, Ishigami Y (2008) Effects of planting density and air current speed on the growth and uniformity of qing-geng-cai and spinach plug seedlings in a closed transplant production system. Environ Cont Biol 46:103–114. https://doi.org/10.2525/ecb.46.103
Zhang G, Johkan M, Hohjo M, Tsukagoshi S, Maruo T (2017) Plant growth and photosynthesis response to low potassium conditions in three lettuce (Lactuca sativa) types. Hortic J. https://doi.org/10.2503/hortj.OKD-008
Zheng J, Ji F, He D, Niu G (2019) Effect of light intensity on rooting and growth of hydroponic strawberry runner plants in a LED plant factory. Agronomy 9:875. https://doi.org/10.3390/agronomy9120875
Zobayed SM, Afreen F, Kozai T (2005) Necessity and production of medicinal plants under controlled environments. Environ Cont Biol 43:243–252. https://doi.org/10.2525/ecb.43.243
Acknowledgements
This work was supported by Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through “The First-Generation Smart Plant Farm Advancement and Demonstration Program (320088-1)” funded by Ministry of Agriculture, Food and Rural Affairs.
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Conceptualization, HJL, HH, and SKK; writing-original draft preparation, HJL and YHM; Data curation, SA, HSS, and UJW; Visualization, Investigation, HH; review and editing, supervision, SKK; funding acquisition, SKK. All authors have read and approved the manuscript before submitting.
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Lee, H.J., Moon, Y.H., An, S. et al. Determination of LEDs arrangement in a plant factory using a 3D ray-tracing simulation and evaluation on growth of Cucurbitaceae seedlings. Hortic. Environ. Biotechnol. 64, 765–774 (2023). https://doi.org/10.1007/s13580-023-00523-0
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DOI: https://doi.org/10.1007/s13580-023-00523-0