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Effects of Lighting Intensity and Supplemental CO 2 on Yield of Potential Salad Crops for ISS
Technical Paper
2004-01-2296
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Radish (Raphanus sativus L.), green onion (Allium fistulosum L.), and lettuce (Lactuca sativa L.) are among several “salad” crop species suggested for use on the International Space Station (ISS) as a supplement to the crew’s diet. Among the more important factors affecting the crop yields will be the light intensity or photosynthetic photon flux (PPF) used to grow the plants. Radish (cv. Cherry Bomb), green onion (cv. Kinka), and lettuce (cv. Flandria) plants were grown for 35 days in growth chambers at 8.6, 17.2, and 26 mol m−2 d−1 (150, 300, or 450 μmol m−2 s−1 PPF, respectively) with a 16 hr photoperiod and cool-white fluorescent lamps and either 400 or 1200 μmol mol−1 CO2. Final (35-day) edible yields were taken for the treatments under ambient or supplemented CO2. Results showed a response of growth to incident PPF that indicated a strong influence of lighting on yields. Additionally, increasing CO2 from 400 to 1200 μmol mol−1 significantly increased the overall edible fresh weight of these species, which would be important for settings such as ISS.
Authors
- Jeffrey T. Richards - Dynamac Corporation, Space Life Sciences Laboratory, Kennedy Space Center
- Sharon L. Edney - Dynamac Corporation, Space Life Sciences Laboratory, Kennedy Space Center
- Neil C. Yorio - Dynamac Corporation, Space Life Sciences Laboratory, Kennedy Space Center
- Gary W. Stutte - Dynamac Corporation, Space Life Sciences Laboratory, Kennedy Space Center
- Nathan Cranston - Dynamac Corporation, Space Life Sciences Laboratory, Kennedy Space Center
- Raymond M. Wheeler
- Gregory D. Goins
Topic
Citation
Richards, J., Edney, S., Yorio, N., Stutte, G. et al., "Effects of Lighting Intensity and Supplemental CO2 on Yield of Potential Salad Crops for ISS," SAE Technical Paper 2004-01-2296, 2004, https://doi.org/10.4271/2004-01-2296.Also In
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