The ASTROCULTURE™-1 Flight Experiment: Pressure Control of the WCSAR Porous Tube Nutrient Delivery System

1993 ◽  
Author(s):  
R. C. Morrow ◽  
W. R. Dinauer ◽  
R. J. Bula ◽  
T. W. Tibbitts

2000 ◽  
Vol 10 (1) ◽  
pp. 179-185 ◽  
Author(s):  
D. Marshall Porterfield ◽  
Mary E. Musgrave ◽  
Thomas W. Dreschel

A ground-based comparison of plant nutrient delivery systems that have been developed for microgravity application was conducted for dwarf wheat (Triticum aestivum L. `Yecora Rojo') and rapid-cycling brassica (Brassica rapa L. CrGC#1-33) plants. These experiments offer insight into nutrient and oxygen delivery concerns for greenhouse crop production systems. The experiments were completed over a 12-day period to simulate a typical space shuttle-based spaceflight experiment. The plant materials, grown either using the porous-tube nutrient delivery system, the phenolic foam support system, or a solidified agar nutrient medium, were compared by plant-growth analysis, root zone morphological measurements, elemental composition analysis, and alcohol dehydrogenase enzyme activity assay. The results of these analyses indicate that the porous tube plant nutrient delivery and the phenolic foam systems maintain plant growth at a higher level than the solidified agar gel medium system. Root zone oxygenation problems associated with the agar system were manifested through biochemical and morphological responses. The porous tube nutrient delivery system outperformed the other two systems on the basis of plant growth analysis parameters and physiological indicators of root zone aeration. This information is applicable to the current crop production techniques used in greenhouse-controlled environments.





1994 ◽  
Vol 14 (11) ◽  
pp. 47-51 ◽  
Author(s):  
T.W. Dreschel ◽  
C.S. Brown ◽  
W.C. Piastuch ◽  
C.R. Hinkle ◽  
W.M. Knott


1996 ◽  
Vol 18 (4-5) ◽  
pp. 243-249 ◽  
Author(s):  
R.J. Bula ◽  
R.C. Morrow ◽  
T.W. Tibbitts


2002 ◽  
Author(s):  
M. G. Lefsrud ◽  
B. Ohneck ◽  
D. E. Kopsell ◽  
T. W. Dreschel


1992 ◽  
Author(s):  
R. C. Morrow ◽  
R. J. Bula ◽  
T. W. Tibbitts ◽  
W. R. Dinauer


1995 ◽  
Author(s):  
S.H. Schwartzkopf ◽  
T.L. Stroup ◽  
J.R. Grote ◽  
J. Cannon ◽  
J.A. Howard ◽  
...  


2005 ◽  
Author(s):  
T. W. Dreschel ◽  
C. R. Hall ◽  
T. E. Foster ◽  
M. Salganic ◽  
L. Warren ◽  
...  


2009 ◽  
Author(s):  
Scott J. Montain ◽  
Susan J. McGraw ◽  
Matther R. Ely ◽  
Frederick Dupont ◽  
William J. Tharion


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