| Records |
Author  |
Palmer, M.; Gibbons, R.; Bhagavathula, R.; Holshouser, D. |
| Title |
Roadway Lighting’s Impact on Altering Soybean Growth – Volume 2: LED versus HPS Color Spectral Impact |
Type |
Journal Article |
| Year |
2018 |
Publication |
Technical Report |
Abbreviated Journal |
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| Volume |
FHWA-ICT-18-009 |
Issue |
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Pages |
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| Keywords |
Plants |
| Abstract |
The impact of roadway lighting on soybean plant growth and development, was measured in situ at three locations in the state of Illinois. These locations were situated in close proximity of each other for the purpose of evaluating whether there was a difference in the soy response to HPS roadway lighting, versus soy lit by a specific model of 4,000K LED roadway lighting. The plant data collection included the reproductive-stage, the plant moisture content, and the dried seed weight after harvest. The impact of the type of roadway lighting on the reproduction stage and normalized yield was within the modeling confidence limits at a level of 90%. Modifications are recommended to the specification for roadway lighting trespass. This will minimize the impact on soybean plants based on the two roadway luminaire designs included in this study. |
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| Publisher |
Illinois Center for Transportation/Illinois Department of Transportation |
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| ISSN |
0197-9191 |
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| Call Number |
GFZ @ kyba @ |
Serial |
2264 |
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| Author |
Patel, J.S.; Radetsky, L.; Rea, M.S. |
| Title |
The Value of Red Light at Night for Increasing Basil Yield |
Type |
Journal Article |
| Year |
2018 |
Publication |
Canadian Journal of Plant Science |
Abbreviated Journal |
Can. J. Plant Sci. |
| Volume |
98 |
Issue |
6 |
Pages |
1321-1330 |
| Keywords |
Plants |
| Abstract |
Sweet basil (<i>Ocimum basilicum L.</i>) is primarily used for culinary purposes, but it is also used in the fragrance and medicinal industries. In the last few years, global sweet basil production has been significantly impacted by downy mildew caused by <i>Peronospora belbahrii</i>. Nighttime exposure to red light has been shown to inhibit sporulation of <i>P. belbahrii</i>. The objective of this study was to determine if nighttime exposure to red light from light-emitting diodes (LEDs; λ<sub>max</sub> = 625 nm) could increase plant growth (plant height and leaf size) and yield (number and weight of leaves) in basil plants. In two sets of greenhouse experiments, red light was applied at a photosynthetic photon flux density (PPFD) of 60 µmol m<sup>-2</sup> s<sup>-1</sup> during the otherwise dark night for 10 hours (from 20:00 to 06:00). The results demonstrate that exposure to red light at night can increase the number of basil leaves per plant, plant height, leaf size (length and width), and leaf fresh and dry weight, compared to plants in darkness at night. The addition of incremental red light at night has the potential to be cost-effective for fresh organic basil production in controlled environments. |
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| ISSN |
0008-4220 |
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GFZ @ kyba @ |
Serial |
1955 |
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| Author |
Pattison, P.M.; Tsao, J.Y.; Brainard, G.C.; Bugbee, B. |
| Title |
LEDs for photons, physiology and food |
Type |
Journal Article |
| Year |
2018 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
563 |
Issue |
7732 |
Pages |
493-500 |
| Keywords |
Lighting; Human Health; Plants; Review |
| Abstract |
Lighting based on light-emitting diodes (LEDs) not only is more energy efficient than traditional lighting, but also enables improved performance and control. The colour, intensity and distribution of light can now be controlled with unprecedented precision, enabling light to be used both as a signal for specific physiological responses in humans and plants, and as an efficient fuel for fresh food production. Here we show how a broad and improved understanding of the physiological responses to light will facilitate greater energy savings and provide health and productivity benefits that have not previously been associated with lighting. |
| Address |
Utah State University, Logan, UT, USA |
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English |
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| ISSN |
0028-0836 |
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| Notes |
PMID:30464269 |
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no |
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GFZ @ kyba @ |
Serial |
2110 |
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| Author |
PENG, Y., ZHANG, H., GUO, K., DING, Y., WANG, X. |
| Title |
The Safe Distance Between Road Lighting Fixtures and Street Trees. |
Type |
Journal Article |
| Year |
2019 |
Publication |
Journal of Landscape Research |
Abbreviated Journal |
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| Volume |
11 |
Issue |
2 |
Pages |
41-43 |
| Keywords |
Plants; Planning |
| Abstract |
The road lighting system and the road greening system, which are mutually interrelated and independent, are two important parts in the urban road environment Unreasonable road lighting is easy to induce light pollution and has a great negative impact on the physiology and growth of garden plants in the urban green space. In this paper; 21 kinds of common tree species in the urban green space of Zhengzhou were selected as the research object, and the photosynthetic physiological parameters of landscape trees under the TKD light source were observed using LI-6400 Photosynthesis System. This paper attempted to find the critical point for initiating photosynthesis of different types of tree species under a certain light source and then calculated the safe distance between lighting fixtures and landscape trees. The results showed that road lighting interfered with the photosynthetic physiological activities of the surveyed trees, affecting the normal dormancy of the plants at night; the sensitivity of different tree species to night lighting was different, and there were some differences in the light compensation points, so the corresponding safe distance was also different It is hoped that this study can provide a valuable reference and scientific basis for urban toad greening and lighting design. |
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| Call Number |
IDA @ intern @ |
Serial |
2648 |
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| Author |
Pocock, T. |
| Title |
Advanced lighting technology in controlled environment agriculture |
Type |
Journal Article |
| Year |
2016 |
Publication |
Lighting Research and Technology |
Abbreviated Journal |
Lighting Research and Technology |
| Volume |
48 |
Issue |
1 |
Pages |
83-94 |
| Keywords |
Plants; Lighting |
| Abstract |
There is a recent awareness of the importance of plants in our everyday lives. Light is a requirement for plants and serves two important roles. It provides energy for growth and provides information that elicits plant responses including, among others, plant shape, pigmentation, nutritional content and resistance to stress. Light is paradoxical to plants, it is a requirement however, in excess it is damaging. Plants sense and interpret light through many families of photoreceptors and through the energy state of the photosynthetic apparatus. Light emitting diodes (LEDs) are quickly replacing traditional light sources for human applications, and currently there is effort being put into tailoring these technology platforms for the plant community. Potential plant sensing pathways and the spectral effects on pigmentation and photochemistry in red lettuce are described. |
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| ISSN |
1477-1535 |
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| Call Number |
LoNNe @ kyba @ |
Serial |
1383 |
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