title: Growing root, tuber and nut crops hydroponically for CELSS.
abstract: Among the crops selected by the National Aeronautics and Space Administration for growth in controlled ecological life support systems are four that have subsurface edible parts -- potatoes, sweet potatoes, sugar beets and peanuts.  These crops have been produced in open and closed (recirculating), solid media and liquid, hydroponic systems.  Fluorescent , fluorescent plus incandescent and high pressure sodium plus metal halide lamps have proven to be effective light sources.  Continuous light with 16 degrees C and 28/22 degrees C (day/night) temperatures have produced highest yields for potato and sweet potato, respectively.  Dry weight yields of up to 4685, 2541, 1151 and 207 g m-2 for  for potatoes, sweet potatoes, sugar beets and peanuts, respectively, have been produced in controlled environment hydroponic systems.
authors.affiliation: George Washington Carver Agricultural Experiment Station, Tuskegee University, AL 36088.
authors.forename: W A
authors.initials: WA
authors.lastname: Hill
authors.forename: D G
authors.initials: DG
authors.lastname: Mortley
authors.forename: C L
authors.initials: CL
authors.lastname: Mackowiak
authors.forename: P A
authors.initials: PA
authors.lastname: Loretan
authors.forename: T W
authors.initials: TW
authors.lastname: Tibbitts
authors.forename: R M
authors.initials: RM
authors.lastname: Wheeler
authors.forename: C K
authors.initials: CK
authors.lastname: Bonsi
authors.forename: C E
authors.initials: CE
authors.lastname: Morris
mesh_terms: D010367:Arachis / Q000254:growth & development*; D018533:Biomass; D018527:Hydroponics; D008021:Life Support Systems; D009753:Nutritive Value; D011198:Solanum tuberosum / Q000254:growth & development*; D014675:Vegetables / Q000254:growth & development*