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Rachel A. Kreis, Holly W. Lange, Stephen Reiners and Christine D. Smart

field inoculated with Alternaria brassicicola for 2014 and 2015 in Geneva, NY. Cauliflower transplants were started on 5 June 2014 and 1 June 2015 and grown in a greenhouse with natural and supplemental lighting. The transplants were fertilized twice

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Gary W. Stutte

facilities using LED light sources have been built in Japan ( Wheeler, 2008 ), light fixtures for intracanopy lighting are being developed ( Massa et al., 2008 ), and supplemental lighting fixtures have been designed ( Bourget, 2008 ). Although a fundamental

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Lee Ann Moccaldi and Erik S. Runkle

(DLIs), depending on the time of year, greenhouse location, light transmission to the crops, and supplemental lighting. For example, the mean outdoor DLI in Michigan is less than 15 mol·m −2 ·d −1 in January and more than 50 mol·m −2 ·d −1 in May

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Susan L.F. Meyer, Dilip K. Lakshman, Inga A. Zasada, Bryan T. Vinyard and David J. Chitwood

first true leaf stage by transplant. This was 16 to 19 d before transplant for cucumber, 19 d for muskmelon, 30 d for pepper, and 23 d for tomato, with the greenhouse maintained at 24 °C to 29 °C. Natural and supplemental lighting were combined for a 16

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Kellie J. Walters, Allison A. Hurt and Roberto G. Lopez

-glazed greenhouse in East Lansing, MI (lat. 43° N), with exhaust fans, evaporative-pad cooling, radiant steam heating, and supplemental lighting controlled by an environmental control system (Integro 725; Priva North America, Vineland Station, ON, Canada). When the

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Esther E. McGinnis, Alan G. Smith and Mary H. Meyer

(Sun Gro Horticulture, Seba Beach, AB, Canada). For 2 weeks, the plants were allowed to establish in a greenhouse with 22/18 °C (day/night) air temperature setpoints and supplemental lighting from high-pressure sodium lamps was provided to extend the

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Cary A. Mitchell

SUPPLEMENTAL LIGHTING IN THE GREENHOUSE Distribution of all sources of lighting also is an important consideration for the greenhouse, especially for crop production, where blockage of sunlight by LED arrays needs to be minimized. For overhead supplemental

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Christopher J. D’Angelo and Irwin L. Goldman

, air conditioning, and supplemental lighting. Similarly, flowering was observed in all accessions, years, and storage durations. Vernalization is not the only path to flowering, but its impact on flowering time is substantial. The literature on the

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Liang Cheng, Ning Zhang and Bingru Huang

greenhouse with an average temperature of 21 °C day/15 °C night and 710 µmol·m −2 ·s −1 photosynthetically active radiations ( PAR ) from natural sunlight and supplemental lighting. Plants were irrigated daily with sterile water and fertilized weekly with

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Christopher J. Currey and Roberto G. Lopez

points of 23 ± 1 °C, and a DLI of ≈5 mol·m −2 ·d −1 was maintained for callusing using a combination of shade cloth and supplemental lighting from 1000-W high-pressure sodium (HPS) lamps (e-system HID; PARSource, Petaluma, CA) that delivered a