Whole high-quality light environment for humans and plants

Sharakshane, A. S.

doi:10.1016/j.lssr.2017.07.001

Cited by 7 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculations were carried out based on the same database of 205 spectra of white LEDs, which was used in the works [1,2]. We carried out a multivariate regression analysis using models involving independent variables raised to from the negative 1st to the 2nd power and searched for simplified models where the magnitude of error is slightly higher than when using a complete model.…”

Section: Methodsmentioning

confidence: 99%

“…The illumination with white light is measured by a luxmeter. And since the white light spectrum profile is usually described by the known colour temperature and colour rendition with sufficient accuracy for agrotechnical purposes [1], measuring the illumination in lux allows to estimate photosynthetically active radiation in any other units used in growing plants.…”

Section: Measuring and Recording The Lighting System Parametersmentioning

confidence: 99%

“…The effectiveness of modern white LED luminaires, expressed in μmol/J in the relevant range of 400...700 nm, nearly corresponds to the best specialized HPS and is slightly inferior to LED luminaires with a depleted spectrum [1]. This makes the usage of white light energetically reasonable.…”

Section: Comparative Effectiveness Of Using White Lightmentioning

confidence: 99%

“…There is usually no separate room for them. Therefore, in education projects, there is also no alternative to white light of high colour rendering, which provide visual comfort for a person and good conditions for plant development [1].…”

Section: Introduction Need For White Lightmentioning

confidence: 99%

See 3 more Smart Citations

An easy estimate of the PFDD for a plant illuminated with white LEDs: 1000 lx = 15 μmol/s/m²

Sharakshane

2018

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Measuring and Recording The Lighting System Parametersmentioning

confidence: 99%

Section: Comparative Effectiveness Of Using White Lightmentioning

confidence: 99%

Section: Introduction Need For White Lightmentioning

confidence: 99%

See 2 more Smart Citations

An easy estimate of the PFDD for a plant illuminated with white LEDs: 1000 lx = 15 μmol/s/m²

Sharakshane

2018

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The energy feasibility of plant lighting using common white LED lamps has been studied in the paper [3]. The characteristic shape of the white LED spectrum is determined by:…”

Section: White Led Lighting For Plantsmentioning

confidence: 99%

White LED Lighting for Plants

Sharakshane

2017

Preprint

Self Cite

View full text Add to dashboard Cite

The highest intensity of photosynthesis is obtained under red light, but plants die or their growth gets disrupted if only red light is used. For example, Korean researchers [1] have shown that under pure red light the amount of the grown lettuce is greater than under a combination of red and blue light, but the leaves have a significantly smaller amount of chlorophyll, polyphenols and antioxidants. And the researchers at the Faculty of Biology of the Moscow State University [2] have found that the synthesis of sugars is reduced, growth is inhibited and no blossoming occurs in the leaves of Chinese cabbage under narrow-band red and blue light (as compared to a sodium lamp).What kind of lighting is needed to get a fully developed, large, fragrant and tasty plant with moderate energy consumption?

show abstract

Assessing the effect of complex ground types on ground‐dwelling arthropod movements with video monitoring: Dealing with concealed movements under a layer of plant residues

Collard

Tixier

Carval

et al. 2022

Ecology and Evolution

View full text Add to dashboard Cite

Understanding the effect of ground types on foraging movements of ground-dwelling arthropods is a key step to managing their spatial distribution as required for successful conservation biological control. Indeed, fine movements at the centimeter scale can strongly influence the foraging ability of pest predators. However, because radio frequency identification or harmonic tracking techniques are not yet suitable for small species and video tracking focuses on uniform and light backgrounds, foraging movements have rarely been studied in relation to ground types. We present a method to track a ground-dwelling arthropod (the earwig Euborellia caraibea) at night, walking on two contrasted ground types: bare soil and soil partly covered with a stratum of banana plant residues allowing individuals to hide periodically. The tracking of individuals within these ground types was achieved by infrared light, tagging individuals, video treatments, and semi-automatic cleaning of trajectories. We tested different procedures to obtain segments with identical durations to quantify speeds and sinuosities. These procedures were characterized by the junction time gap between trajectory fragments, the rediscretization time of trajectories, and whether or not to use interpolation to fill in missing points in the trajectories. Earwigs exhibited significantly slower and more sinuous movements on soil with banana plant residues than on bare soil. Long time gaps for trajectory junction, extended rediscretization times, and interpolation were complementary means to integrate concealed movements in the trajectories. The highest slowdown in plant residues was detected when the procedure could account for longer periods under the residues. These results suggest that earwigs spent a significant amount of time concealed by the residues. Additionally, the residues strongly decreased the earwigs' movement. Since the technical solutions presented in this study are inexpensive, easy to set up, and replicate, they represent valuable contributions to the emerging field of video monitoring.

show abstract

Whole high-quality light environment for humans and plants

Cited by 7 publications

References 13 publications

An easy estimate of the PFDD for a plant illuminated with white LEDs: 1000 lx = 15 μmol/s/m²

An easy estimate of the PFDD for a plant illuminated with white LEDs: 1000 lx = 15 μmol/s/m²

White LED Lighting for Plants

Assessing the effect of complex ground types on ground‐dwelling arthropod movements with video monitoring: Dealing with concealed movements under a layer of plant residues

Contact Info

Product

Resources

About

Whole high-quality light environment for humans and plants

Cited by 7 publications

References 13 publications

An easy estimate of the PFDD for a plant illuminated with white LEDs: 1000 lx = 15 μmol/s/m2

An easy estimate of the PFDD for a plant illuminated with white LEDs: 1000 lx = 15 μmol/s/m2

White LED Lighting for Plants

Assessing the effect of complex ground types on ground‐dwelling arthropod movements with video monitoring: Dealing with concealed movements under a layer of plant residues

Contact Info

Product

Resources

About

An easy estimate of the PFDD for a plant illuminated with white LEDs: 1000 lx = 15 μmol/s/m²

An easy estimate of the PFDD for a plant illuminated with white LEDs: 1000 lx = 15 μmol/s/m²