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Mary Lewis, Matthew Chappell, Donglin Zhang, and Rebekah Maynard

the University of Georgia Athens campus, in 804 inserts (T.O. Plastics, Minneapolis, MN) containing 100% perlite (Carolina Perlite Co., Gold Hill, NC). Supplemental light was provided by light-emitting diode (LED) arrays (Fluence Spyder with PhysioSpec

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Kim D. Bowman, Lynn Faulkner, and Mike Kesinger

, Marysville, OH) applied with a proportioner at a rate of 400 mg·L −1 N. No supplemental light was supplied and temperature ranged from 21 to 28 °C. Maximum photosynthetic photon flux in the greenhouse was 1000 µmol·s −1 ·m −2 . After 5 months, each rack was

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Ah-Chiou Lee, Fang-Shin Liao, and Hsiao-Feng Lo

), and a long-day period (LD, 15 h). The short photoperiod was provided by covering plants with black cloth at 5:30 pm and removing the black cloth at 7:30 am the next morning. Medium and long photoperiods were achieved by providing supplemental light

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Lie Li, Yu-xin Tong, Jun-ling Lu, Yang-mei Li, and Qi-chang Yang

white and supplemental light provided by light-emitting diode Scientia Hort. 200 111 118 Dougher, T.A. Bugbee, B. 2001 Evidence for yellow light suppression of lettuce growth Photochem. Photobiol. 73 2 613 620 Evans, J. Vogelmann, T. 2003 Profiles of C

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Asmita Paudel, Ji Jhong Chen, Youping Sun, Yuxiang Wang, and Richard Anderson

the experimental period, the average air temperature in the greenhouse was 24.9 ± 1.2 °C during the day and 22.0 ± 2.4 °C at night. The average daily light integral in the greenhouse was 24.8 ± 12.5 mol·m −2 ·d −1 . Supplemental light at 160.4 µmol

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Kellie J. Walters and Christopher J. Currey

, 2005 ). It is unclear how increasing light alone affects nutrient solution EC requirements, as would be the case for a producer using supplemental light during the fall, winter, and spring, when air temperatures in the greenhouse are more easily

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Liang Zheng, Huaming He, and Weitang Song

-induced anthocyanin accumulation in Fragaria × ananassa fruits J. Plant Res. 126 847 857 Kaiser, E. Ouzounis, T. Giday, H. Schipper, R. Heuvelink, E. Marcelis, L.F.M. 2019 Adding blue to red supplemental light increases biomass and yield of greenhouse

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Cassandra M. Plank, Edward W. Hellman, and Thayne Montague

effects, at the end of each developmental period, berry IBMP levels for shaded clusters were compared with shaded clusters receiving supplemental light from LEDs. Materials and Methods Experiments were conducted at the Texas A&M AgriLife Research and

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A. Maaike Wubs, Ep Heuvelink, Leo F.M. Marcelis, Gerhard H. Buck-Sorlin, and Jan Vos

and the same architecture could be established in all plants. Supplemental light was provided by high-pressure sodium lamps (600 W; Philips, Eindhoven, The Netherlands), which provided 150 μmol·m −2 ·s −1 at crop level. Lamps were switched on between

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Martin P.N. Gent

nitrogen, potassium, phosphorus, and pigments in leaves, but there was less total carbohydrate ( El Gizawy et al., 1993b ). The use of supplemental light to increase radiation in a greenhouse had the opposite effect of decreasing potassium, but supplemental