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Salad Crop Production Under Different Wavelengths of Red Light-emitting Diodes (LEDs)
Technical Paper
2001-01-2422
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Light-emitting diodes (LEDs) represent an innovative artificial lighting source with several appealing features specific for supporting plants, whether on space-based transit vehicles or planetary life support systems. Appropriate combinations of red and blue LEDs have great potential for use as a light source to drive photosynthesis due to the ability to tailor irradiance output near the peak absorption regions of chlorophyll. This paper describes the importance of far-red radiation and blue light associated with narrow-spectrum LED light emission. In instances where plants were grown under lighting sources in which the ratio of blue light (400–500 nm) relative to far-red light (700–800 nm) was low, there was a distinct leaf stretching or broadening response. This photomorphogenic response sanctioned those canopies as a whole to reach earlier critical leaf area indexes (LAI) as opposed to plants grown under lighting regimes with higher blue:far-red ratios. In many instances, the salad crops grown under LEDs were just as productive as crops grown under broad-spectrum light, largely as a consequence of more efficient light interception during early growth.
Authors
- Gregory D. Goins - Dynamac Corporation, Kennedy Space Center
- Lisa M. Ruffe - Dynamac Corporation, Kennedy Space Center
- Nathan A. Cranston - Dynamac Corporation, Kennedy Space Center
- Neil C. Yorio - Dynamac Corporation, Kennedy Space Center
- Raymond M. Wheeler - NASA KSC Spaceport Engineering and Technology
- John C. Sager - NASA KSC Spaceport Engineering and Technology
Citation
Goins, G., Ruffe, L., Cranston, N., Yorio, N. et al., "Salad Crop Production Under Different Wavelengths of Red Light-emitting Diodes (LEDs)," SAE Technical Paper 2001-01-2422, 2001, https://doi.org/10.4271/2001-01-2422.Also In
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