Search Results

You are looking at 61 - 70 of 648 items for :

  • "controlled environment" x
Clear All
Full access

Johann S. Buck, Chieri Kubota and Merle Jensen

tomatoes of all grades and achieved the premium-grade tomato yield comparable to the HE treatment, which may make this strategy more attractive under semiarid greenhouse with limited controlled-environment technology. Literature cited Adams, P. 1991 Effects

Free access

Gioia D. Massa, Jeffery C. Emmerich, Robert C. Morrow, C. Michael Bourget and Cary A. Mitchell

Oral Session 7—Controlled Environments 28 July 2006, 8:00–9:00 a.m. Southdown Moderator: Chieri Kubota

Free access

Gary Stutte and Ignacio Eraso

Oral Session 7—Controlled Environments 28 July 2006, 8:00–9:00 a.m. Southdown Moderator: Chieri Kubota

Open access

Chase Jones-Baumgardt, David Llewellyn and Youbin Zheng

.S. Runkle (eds.). Light management in controlled environments. Meister Media, Middletown, DE Erwin, J. Gesick, E. 2017 Photosynthetic responses of swiss chard, kale, and spinach cultivars to irradiance and carbon dioxide concentration HortScience 52 706 712

Open access

Daniel P. Gillespie, Chieri Kubota and Sally A. Miller

the country. Hydroponic production in controlled environments allows year-round local production of perishable fresh produce in densely populated areas, closer to the point of consumption. As a result, hydroponic basil quickly became a major product

Free access

Desmond Mortley, Jill Hill, Conrad Bonsi, Walter Hill and Carlton Morris

Poster Session 11—Controlled Environments 18 July 2005, 1:15–2:00 p.m. Poster Hall–Ballroom E/F

Free access

M.F. Aoun, K.B. Perry, W.H. Swallow, D.J. Werner and M.L. Parker

Free access

Ruey-Chi Jao and Wei Fang

Effects of intermittent light on photomixotrophic growth of potato plantlets in vitro and the electrical savings that could be realized by adjusting the frequency and duty ratio of light-emitting diodes (LEDs) were investigated and compared to the use of conventional tubular fluorescent lamps (TFLs). TFLs provide continuous fluctuating light at 60 Hz and LEDs provide continuous nonfluctuating or intermittent/pulse light depend on the preset frequency and duty ratio. In total, eight treatments were investigated with varying light source, frequency, duty ratio and photoperiod. Results indicated that if growth rate is the only concern, LEDs at 720 Hz [1.4 milliseconds (ms)] and 50% duty ratio with 16-h light/8-h dark photoperiod stimulated plant growth the most. However, if energy consumption is the major concern, using LEDs at 180 Hz (5.5 ms) and 50% duty ratio with 16-h light/8-h dark photoperiod would be the best choice for illuminating potato plantlets without significantly sacrificing plant growth, especially when energy for heat removal is also considered.