Light-Emitting Diodes: On the Way to Combinatorial Lighting Technologies for Basic Research and Crop Production

Tarakanov, I.G.; Yakovleva, Olga; Konovalova, I.O.; Paliutina, G.; Anisimov, Alexander

doi:10.17660/actahortic.2012.956.17

Cited by 49 publications

(39 citation statements)

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“…They can be grown not only in greenhouses or growth chambers, but also in various indoor spaces in restaurants, hospitals, kindergartens, and residential houses. Literature data show that different plants are successfully cultivated under various lighting combinations of blue, red, and far-red LEDs (Stutte et al, 2009;Tarakanov et al, 2012). However, microgreens are generally grown from seeds of open-field vegetables that are physiologically adapted to natural sunlight.…”

Section: Introductionmentioning

confidence: 99%

Effect of supplemental UV-A irradiation in solid-state lighting on the growth and phytochemical content of microgreens

Brazaitytė¹,

Viršilė²,

Jankauskienė³

et al. 2015

International Agrophysics

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In this study, we sought to find and employ positive effects of UV-A irradiation on cultivation and quality of microgreens. Therefore, the goal of our study was to investigate the influence of 366, 390, and 402 nm UV-A LED wavelengths, supplemental for the basal solid-state lighting system at two UV-A irradiation levels on the growth and phytochemical contents of different microgreen plants. Depending on the species, supplemental UV-A irradiation can improve antioxidant properties of microgreens. In many cases, a significant increase in the investigated phytochemicals was found under 366 and 390 nm UV-A wavelengths at the photon flux density (12.4 μmol m-2 s-1). The most pronounced effect of supplemental UV-A irradiation was detected in pak choi microgreens. Almost all supplemental UV-A irradiation treatments resulted in increased leaf area and fresh weight, in higher 2,2-diphenyl-1-picrylhydrazyl free-radical scavenging activity, total phenols, anthocyanins, ascorbic acid, and α-tocopherol.

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Section: Introductionmentioning

confidence: 99%

Effect of supplemental UV-A irradiation in solid-state lighting on the growth and phytochemical content of microgreens

Brazaitytė¹,

Viršilė²,

Jankauskienė³

et al. 2015

International Agrophysics

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“…Artificial lighting is gaining relevance in horticulture, since it allows cultivation wherever natural light is not sufficient (indoor cultivation). Although, various plants need various light treatments, it has been confirmed that the optimal ratio between blue and red light is of great relevance in determining yield performance (Tarakanov et al 2012). Moreover, increased crop growth is also related to improved light interception rather than increased photosynthetic rates (Hogewoning et al 2012).…”

Section: Resultsmentioning

confidence: 99%

“…The present work confirmed the efficiency superiority of LED compared to the traditional fluorescent lamps, enabling an increase of about two folds leaf number productivity (Table 4). According to Samuoliene et al (2010), a species-specific mixture of red and blue spectral components is necessary for proper plant development and the effect of the blue light in promoting leaf number has been addressed in a range of recent reports, although often with controversial results (Tarakanov et al 2012). Furthermore, the improvement on the biomass of Welsh onion (Allium fistulosum L.) shoot with blue, rather than red and green, overnight supplemental lighting was reported by Sase et al (2012).…”

Section: Resultsmentioning

confidence: 99%

Response of Leaf Number and Plant Height of Polka Dot Plant (Hypoestes Phyllostachya) Under Various Indoor Lights

Sabaghnia¹,

Matloobi²,

Motallebi-Azar³

2016

AgricultForest

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SUMMARYVariegated foliage plants such Polka Dot Plant (Hypoestes phyllostachya) as are often used in interiorscaping in low light environments. The changes in leaf number and plant height under various light types (blue, red and blue+red LED (light-emitting diode) and fluorescent) were investigated to elucidate their optimum indoor light environment. The changes in plant height (was different from leaf number. In general, plant height increased with increasing time. Leaf number showed no significant changes in first sampling decades under different light treatments. The analysis of variance results indicated significant differences for plant height in different light treatments for all sampling decades expect the first, second and third decades, but the results of analysis of variance for leaf numbers indicated non-significant differences among different light treatments. The comparison of means for plant height in the first, second and third decades indicated that there are no significant differences among light treatments while in next five decades, red light treatment showed the long plant height. Also, comparison of means for leaf numbers under various light treatments via Duncan's new multiple range test indicated that there is not any significant differences among different light treatments in first five decades and seventh decade while in the sixth decade, blue light treatment had the highest leaf numbers following to red and blue+red light treatments. In the eighth decade, blue and red light treatments had the highest leaf numbers following to blue+ red light treatment. This study revealed that the most suitable light treatment for obtaining short and high leaf numbers in Polka Dot Plant were blue or blue+red treatments.

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“…Finally, in Section 6, we conclude the paper. Table 1 shows results for the effects of LEDs with various wavelengths on the plants [7][8][9][10][11][12]. Ref.…”

Section: Introductionmentioning

confidence: 99%

“…[9] experimented with lettuce and green onions using red LEDs (638 nm) and natural light, and nitrate was decreased. Several studies have are also under way to promote plant growth using both red and blue LEDs [10][11][12]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Power Controllable LED System with Increased Energy Efficiency Using Multi-Sensors for Plant Cultivation

2017

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Abstract:In this paper, a power-controllable light emitting diode (LED) control system is proposed for plant cultivation. The proposed LED system measures environmental data, such as the distance between the plant and LED system using an infrared sensor and the ambient illuminance based on an illuminance sensor. Then, it converts the illuminance to the photosynthetic photon flux density (PPFD) for plant cultivation. It analyzes the relationship between the data and LED PPFD, and generates an optimal pulse width modulation (PWM) signal. Therefore, it controls the LED PPFD dynamically. The proposed LED system is also implemented in hardware, which consists of red and blue LED arrays with suitable wavelengths and a micro-controller. In the experimental results, the proposed LED system preserved the target PPFD regardless of the change of the distance and ambient PPFD. Additionally, the proposed LED system maximally reduced the power consumption of a conventional system by up to 68%.

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Light-Emitting Diodes: On the Way to Combinatorial Lighting Technologies for Basic Research and Crop Production

Cited by 49 publications

References 0 publications

Effect of supplemental UV-A irradiation in solid-state lighting on the growth and phytochemical content of microgreens

Effect of supplemental UV-A irradiation in solid-state lighting on the growth and phytochemical content of microgreens

Response of Leaf Number and Plant Height of Polka Dot Plant (Hypoestes Phyllostachya) Under Various Indoor Lights

Power Controllable LED System with Increased Energy Efficiency Using Multi-Sensors for Plant Cultivation

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