Comparison and perspective of conventional and LED lighting for photobiology and industry applications

Wu, Bo-Sen; Hitti, Yasmeen; MacPherson, Sarah; Orsat, Valérie; Lefsrud, Mark

doi:10.1016/j.envexpbot.2019.103953

Cited by 42 publications

(30 citation statements)

References 70 publications

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“…Phytochemistry in cannabis is very complex; more than 480 compounds have been identified [25], some belonging to primary metabolism, e.g., amino acids, fatty acids, and steroids; while others are secondary metabolites e.g., cannabinoids, terpenoids, flavonoids, stilbenoids, lignans, alkaloids, and hormones. The concentration of these compounds depends on tissue type, developmental stage (age), genetic or cultivar variety, and growth conditions (irradiance, nutrient uptake, atmospheric conditions, water conditions) as well as harvest and post-harvest processing.…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic Performance and Potency of <i>Cannabis sativa</i> L. Grown under LED and HPS Illumination

Jenkins¹,

Livesay²

2021

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Light-emitting diodes (LEDs) can be used as an energy efficient alternative to high-pressure sodium (HPS), which have historically been the standard for supplemental lighting in cannabis cultivation. However, there is a lack of scientific understanding in the cannabis industry regarding plant physiology, which has resulted in the adoption of cannabis cultivation methods based on hearsay rather than scientific research. The goals of this study were to 1) compare LED lighting options that are commonly used in the cannabis industry and 2) compare the top performing LED light with an industry standard HPS light. Specifically, three LED lights were compared (California Light Works ((SolarSystem 1100), BIOS Lighting (Icarus Gi2), and Fluence Bioengineering (now Fluence by Osram) (SPYDR xPLUS)), based on light distribution, leaf temperature, and photosynthetic performance indices. The LED versus HPS comparison was based on light response curves measured at photosynthetic photon flux densities (

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Section: Discussionmentioning

confidence: 99%

Photosynthetic Performance and Potency of <i>Cannabis sativa</i> L. Grown under LED and HPS Illumination

Jenkins¹,

Livesay²

2021

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“…Unlike UV-blocking films, LEDs offer higher controllability of light properties, such as specific wavelength(s), photoperiod adjustment, and a wide range of intensities ( Zoratti et al, 2014 ; Alrifai et al, 2019 ; Wu et al, 2019 ). Many recent studies show the potential of manipulating plant growth and regulating plant secondary metabolite profiles with LED lighting on numerous greenhouse crops within the visible spectrum ( Stewart and Folta, 2010 ; Cocetta et al, 2017 ; Landi et al, 2020b ).…”

Section: The Impact Of Uv Radiation On Strawberry Fruit Flavonoidsmentioning

confidence: 99%

A Review of Strawberry Photobiology and Fruit Flavonoids in Controlled Environments

Warner

MacPherson

et al. 2021

Front. Plant Sci.

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Rapid technology development in controlled environment (CE) plant production has been applied to a large variety of plants. In recent years, strawberries have become a popular fruit for CE production because of their high economic and nutritional values. With the widespread use of light-emitting diode (LED) technology in the produce industry, growers can manipulate strawberry growth and development by providing specific light spectra. Manipulating light intensity and spectral composition can modify strawberry secondary metabolism and highly impact fruit quality and antioxidant properties. While the impact of visible light on secondary metabolite profiles for other greenhouse crops is well documented, more insight into the impact of different light spectra, from UV radiation to the visible light spectrum, on strawberry plants is required. This will allow growers to maximize yield and rapidly adapt to consumer preferences. In this review, a compilation of studies investigating the effect of light properties on strawberry fruit flavonoids is provided, and a comparative analysis of how light spectra influences strawberry’s photobiology and secondary metabolism is presented. The effects of pre-harvest and post-harvest light treatments with UV radiation and visible light are considered. Future studies and implications for LED lighting configurations in strawberry fruit production for researchers and growers are discussed.

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“…In comparison with other lighting sources, an LED lighting system's lifetime tends to be longer, mainly due to the absence of movable parts or filaments that may break. Accordingly, an LED lighting system's lifetime is mostly defined as lumen maintenance [67,68]. The technical lives of LEDs are about 100,000 h, although their utilization is generally shorter due to the reduction of luminous flux at the end of their lives [67].…”

Section: Lifespan and Lumen Depreciationmentioning

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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Comparison and perspective of conventional and LED lighting for photobiology and industry applications

Cited by 42 publications

References 70 publications

Photosynthetic Performance and Potency of <i>Cannabis sativa</i> L. Grown under LED and HPS Illumination

Photosynthetic Performance and Potency of <i>Cannabis sativa</i> L. Grown under LED and HPS Illumination

A Review of Strawberry Photobiology and Fruit Flavonoids in Controlled Environments

LED Lighting Systems for Horticulture: Business Growth and Global Distribution

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Comparison and perspective of conventional and LED lighting for photobiology and industry applications

Cited by 42 publications

References 70 publications

Photosynthetic Performance and Potency of &lt;i&gt;Cannabis sativa&lt;/i&gt; L. Grown under LED and HPS Illumination

Photosynthetic Performance and Potency of &lt;i&gt;Cannabis sativa&lt;/i&gt; L. Grown under LED and HPS Illumination

A Review of Strawberry Photobiology and Fruit Flavonoids in Controlled Environments

LED Lighting Systems for Horticulture: Business Growth and Global Distribution

Contact Info

Product

Resources

About

Photosynthetic Performance and Potency of <i>Cannabis sativa</i> L. Grown under LED and HPS Illumination

Photosynthetic Performance and Potency of <i>Cannabis sativa</i> L. Grown under LED and HPS Illumination