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Microgravity Root Zone Hydration Systems
Technical Paper
2000-01-2510
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Accurate root zone moisture control in microgravity plant growth systems is problematic. With gravity, excess water drains along a vertical gradient, and water recovery is easily accomplished. In microgravity, the distribution of water is less predictable and can easily lead to flooding, as well as anoxia. Microgravity water delivery systems range from solidified agar, water-saturated foams, soils and hydroponics soil surrogates including matrix-free porous tube delivery systems. Surface tension and wetting along the root substrate provides the means for adequate and uniform water distribution. Reliable active soil moisture sensors for an automated microgravity water delivery system currently do not exist. Surrogate parameters such as water delivery pressure have been less successful.
Authors
- Alex Hoehn - BioServe Space Technologies
- Paul Scovazzo - BioServe Space Technologies
- Louis S. Stodieck - BioServe Space Technologies
- James Clawson - University of Colorado
- William Kalinowski - University of Colorado
- Alexi Rakow - University of Colorado
- David Simmons - University of Colorado
- A. Gerard Heyenga - NASA Ames Research Center
- Mark H. Kliss - NASA Ames Research Center
Citation
Hoehn, A., Scovazzo, P., Stodieck, L., Clawson, J. et al., "Microgravity Root Zone Hydration Systems," SAE Technical Paper 2000-01-2510, 2000, https://doi.org/10.4271/2000-01-2510.Also In
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