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Growth of potatoes for CELSSThis report summarizes research on the utilization of white potatoes (Solanum tuberosum L.) for space life support systems at the University of Wisconsin-Madison over the period of 1984 to 1993. At full maturity the tuber productivity was 37.5 gm(exp -2) d(exp -1), equating to a growing area requirement for one human (2800 kcal d(exp -1)) of 10.1 m(exp -2). A recirculating nutrient system using slanted trays produced best potato growth and tuber yields when a 2-3 cm layer of gravel or arcillite media was utilized. Potato production was close to maximum under lighting levels of 400 micromol m(exp -2) s(exp -1) of photosynthetic photo flux (PPF) for 24 hours or 800 micromol m(exp -2) s(exp -1) for 12 hours, alternating diurnal temperatures of 22 C and 14 C, relative humidity of 85 percent, and a carbon dioxide level of 1000 micromol m(exp -1). The range of effective concentrations of each separate nutrient is reported. The extensive studies with potatoes in this project have demonstrated that this crop has high productivity of nutritous tubers with a high harvest index in controlled environments, and can fulfill a significant portion of the energy and protein requirements for humans in space.
Document ID
19950005536
Document Type
Contractor Report (CR)
Authors
Tibbitts, T. W. (Wisconsin Univ. Madison, WI, United States)
Cao, W. (Wisconsin Univ. Madison, WI, United States)
Wheeler, R. M. (Wisconsin Univ. Madison, WI, United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1994
Subject Category
MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
Report/Patent Number
NAS 1.26:177646
NASA-CR-177646
A-94129
Funding Number(s)
CONTRACT_GRANT: NCC2-301
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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