Configuration, Function, and Operation of LED Lighting Systems

Yano, Akira

doi:10.1007/978-981-10-1848-0_29

Cited by 2 publications

(3 citation statements)

References 52 publications

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“…Furthermore, low intensity seemed to improve the postharvest quality of fruits and prevent senescence during storage [ 198 ]. Light distribution and irradiance uniformity are also important parameters to be evaluated because the photosynthetic properties depend on the leaf age and/or distance between the lighting device and plant canopy; therefore, a different response might be revealed in the lower canopy compared to the upper leaves [ 181 , 199 ]. Moreover, since the intensity of light radiation that reaches a surface is inversely proportional to the square of the surface’s distance from the source, light levels vary and are inconsistent as plants grow, which suggests that light output could be modified according to the plant photosynthetic requirements.…”

Section: Led Lighting: Advantages and Challenges In Plant Growth Amentioning

confidence: 99%

Challenges and Opportunities of Light-Emitting Diode (LED) as Key to Modulate Antioxidant Compounds in Plants. A Review

et al. 2020

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Plant antioxidants are important compounds involved in plant defense, signaling, growth, and development. The quantity and quality of such compounds is genetically driven; nonetheless, light is one of the factors that strongly influence their synthesis and accumulation in plant tissues. Indeed, light quality affects the fitness of the plant, modulating its antioxidative profile, a key element to counteract the biotic and abiotic stresses. With this regard, light-emitting diodes (LEDs) are emerging as a powerful technology which allows the selection of specific wavelengths and intensities, and therefore the targeted accumulation of plant antioxidant compounds. Despite the unique advantages of such technology, LED application in the horticultural field is still at its early days and several aspects still need to be investigated. This review focused on the most recent outcomes of LED application to modulate the antioxidant compounds of plants, with particular regard to vitamin C, phenols, chlorophyll, carotenoids, and glucosinolates. Additionally, future challenges and opportunities in the use of LED technology in the growth and postharvest storage of fruits and vegetables were also addressed to give a comprehensive overview of the future applications and trends of research.

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Section: Led Lighting: Advantages and Challenges In Plant Growth Amentioning

confidence: 99%

Challenges and Opportunities of Light-Emitting Diode (LED) as Key to Modulate Antioxidant Compounds in Plants. A Review

et al. 2020

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“…The capability of LED lighting systems to control photon emissions allows the design and manipulation of LED light irradiation according to cultivation strategy [58]. In this sense, photosynthetic active radiation (PAR) plays a fundamental role, being often reported and quantified as photosynthetic photon flux (PPF, expressed as µmol s −1 ) or photosynthetic photon flux density (PPFD, expressed as µmol m −2 s −1 ) [59].…”

Section: Power Consumption Of Luminaires and Their Lighting Environmentmentioning

confidence: 99%

“…In this sense, photosynthetic active radiation (PAR) plays a fundamental role, being often reported and quantified as photosynthetic photon flux (PPF, expressed as µmol s −1 ) or photosynthetic photon flux density (PPFD, expressed as µmol m −2 s −1 ) [59]. However, many LED lighting system manufacturers do not provide these last measurements, since changes can be determined by the distance between the lighting device and plant canopy or by a non-uniform light distribution on the cultivation area [58].…”

Section: Power Consumption Of Luminaires and Their Lighting Environmentmentioning

confidence: 99%

LED Lighting Systems for Horticulture: Business Growth and Global Distribution

et al. 2020

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In recent years, research on light emitting diodes (LEDs) has highlighted their great potential as a lighting system for plant growth, development and metabolism control. The suitability of LED devices for plant cultivation has turned the technology into a main component in controlled or closed plant-growing environments, experiencing an extremely fast development of horticulture LED metrics. In this context, the present study aims to provide an insight into the current global horticulture LED industry and the present features and potentialities for LEDs’ applications. An updated review of this industry has been integrated through a database compilation of 301 manufacturers and 1473 LED lighting systems for plant growth. The research identifies Europe (40%) and North America (29%) as the main regions for production. Additionally, the current LED luminaires’ lifespans show 10 and 30% losses of light output after 45,000 and 60,000 working hours on average, respectively, while the vast majority of worldwide LED lighting systems present efficacy values ranging from 2 to 3 μmol J−1 (70%). Thus, an update on the status of the horticultural LED sector, LEDs’ applications and metrics, and the intense innovation are described and discussed.

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Configuration, Function, and Operation of LED Lighting Systems

Cited by 2 publications

References 52 publications

Challenges and Opportunities of Light-Emitting Diode (LED) as Key to Modulate Antioxidant Compounds in Plants. A Review

Challenges and Opportunities of Light-Emitting Diode (LED) as Key to Modulate Antioxidant Compounds in Plants. A Review

LED Lighting Systems for Horticulture: Business Growth and Global Distribution

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