Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Robert W. Langhans"'
Autor:
Lanfang H. Levine, Robert W. Langhans, Raymond M. Wheeler, Roger M. Spanswick, Eileen F. Wheeler, Arend-Jan Both, Raphael Linker, David deVilliers, Louis D. Albright, Jennifer Mathieu
Publikováno v:
Biosystems Engineering. 95:323-337
Accurate simulation models for short-term (∼hours) changes in hydroponic crop growth and nitrate uptake are needed for rapid fault detection in hydroponic systems. Comparison between model-predicted and measured values for crop growth and nitrate u
Autor:
Corinne J. Rutzke, Raymond P. Glahn, Louis D. Albright, Raymond M. Wheeler, Robert W. Langhans, Michael Rutzke, Ross M. Welch, Gerald F. Combs
Publikováno v:
Habitation. 10:7-14
Spinach (Spinacia oleracea) cv Whitney was tested for iron bioavailabilty using an in vitro human intestinal cell culture ferritin bioassay technique previously developed. Spinach was cultured in a growth chamber for 33 days, harvested, and freeze-dr
Publikováno v:
Acta Horticulturae. :215-222
Publikováno v:
Acta Horticulturae. :293-300
Publikováno v:
Journal of the American Society for Horticultural Science. 123:361-364
`Ostinata' Butterhead lettuce (Lactuca sativa L.) was used to study lettuce production at varied shoot (air) and root (pond) temperatures. A floating hydroponic system was used to study the influence of pond temperature on lettuce growth for 35 days.
Publikováno v:
Acta Horticulturae. :45-52
Publikováno v:
Acta Horticulturae. :275-282
This paper reports an innovative method based on electrochemistry to adjust the pH in nutrient solutions used in hydroponics. The required quantity of H or OH ions is produced insitu through electrolytic water decomposition. Because the direction and
Publikováno v:
Acta Horticulturae. :189-194
Publikováno v:
Acta Horticulturae. :195-202
Publikováno v:
Acta Horticulturae. :45-52