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C. Michael Bourget

expenses (electricity use as well as replacement lamps). Naturally, advances in lighting technology are of great interest to the CEA community for these very reasons. Light-emitting diodes (LEDs) are the most recent lighting technology to enter the CEA

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Baniekal Hiremath Gangadhar, Raghvendra Kumar Mishra, Gobinath Pandian and Se Won Park

variance using SPSS.10 (SPSS, Chicago, IL). The treatment means were separated by different letters. Results Growth and accumulation of metabolites as affected by light-emitting diode light sources Morphological changes induced by light-emitting diode light

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Thitipat Weeplian, Tsair-Bor Yen and Yunn-Shy Ho

spectra, the light intensity of a selected treatment was maintained at a mean PPFD of 215 ± 15 μmol·m −2 ·s −1 , which nonsignificantly differed among the light spectrum treatments. Fig. 1. Spectral distribution of light-emitting diode (LED) light

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Gary W. Stutte

Light-emitting diodes (LEDs) are solid-state semiconductor devices that produce narrow spectrum light when voltage is applied. The use of LEDs in photobiology research was reported in the 1980s and the concept of using LEDs for plant lighting was

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Kevin R. Cope and Bruce Bugbee

crop shown is radish on the day of harvest. Note the differences in plant form across treatments, which are arranged (left to right) warm, neutral, and cool white LEDs. LED = light-emitting diode. Light treatments. Warm, neutral, and cool white LEDs

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Hyeon-Hye Kim, Gregory D. Goins, Raymond M. Wheeler and John C. Sager

a trade name or proprietary product does not constitute an endorsement, guarantee, or warranty by the National Aeronautics and Space Administration. Quantum Devices, Inc. (Barneveld, Wis.) holds a patent (No. 5,012,609) on light-emitting diodes as an

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Neil C. Yorio, Gregory D. Goins, Hollie R. Kagie, Raymond M. Wheeler and John C. Sager

either Dynamac Corporation or National Aeronautics and Space Administration. Quantum Devices, Inc., Barneveld, Wis., holds a patent (no. 5,012,609) on light-emitting diodes as an illumination source for plant growth. The cost of publishing this paper was

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Kun Li, Qi-Chang Yang, Yu-Xin Tong and Ruifeng Cheng

light-emitting diode (LED) panels (60 × 25 × 1.2 cm; FHT Co., Shenzhen, China) were located on the right side and 10 or 30 cm away from the seedling. After 12 h, the LED panels moved to the left side in several minutes (regardless of the speed); 1 cm = 0

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Gary W. Stutte, Sharon Edney and Tony Skerritt

, ultraviolet radiation, mineral imbalances, water stress, mechanical injury, and pathogen attack ( Gould, 2004 ). A promising electric light source for controlled-environment plant growth is light-emitting diodes (LEDs), which are solid-state, durable

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Paul Deram, Mark G. Lefsrud and Valérie Orsat

After-effect of light emitting diodes lighting on tomato growth and yield in greenhouse Sodininkystė ir Daržininkystė 28 115 126 Brown, C. Schuerger, A. Sager, J. 1995 Growth and photomorphogenesis of pepper plants under red light-emitting diodes with