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Heidi C. Anderson, Mary A. Rogers and Emily E. Hoover

systems can improve marketable fruit yield of day-neutral strawberry systems; however, advantages of ultraviolet-blocking and transmitting plastics remain unclear. Units Literature cited Baeza, E. López, J.C. 2012 Light transmission through greenhouse

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Martin P.N. Gent, Wade H. Elmer, Kranti Macherla and Richard J. McAvoy

to delay the start of flower initiation from 18 Sept. 2012 to 15 Oct. 2012. At the Connecticut Agricultural Experiment Station (CAES) Lockwood Farm (Hamden, CT), a 9 × 18 m single-truss greenhouse covered with a double layer of polyethylene film

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Andrew B. Ogden and Marc W. van Iersel

passively ventilated plastic greenhouse covered with a single layer of polyethylene ( Lamont, 2009 ; Waterer, 2003 ). Research has documented many advantages of high tunnel cultivation. Early crop production (7 d to 21 d earlier than field), high yields

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Francisco Alcon, Mari Carmen García-Martínez, María Dolores De-Miguel and María Ángeles Fernández-Zamudio

place outside the natural season, which is the reason why the surface area of greenhouse crops has increased. The Mediterranean region houses 135,000 ha of horticultural species grown under plastic. The surface of greenhouse-covered areas is ≈27,700 ha

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Maria E. Cramer, Kathleen Demchak, Richard Marini and Tracy Leskey

controlling other pests. It has been observed repeatedly that aphid, thrips, and whitefly populations were smaller in greenhouses covered with UV-blocking plastics than in greenhouses with UV-transmitting plastics ( Antignus, 2000 ; Antignus et al., 2001

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Josh B. Henry, Penelope Perkins-Veazie, Ingram McCall and Brian E. Whipker

on 1 May 2017 into 12.7-cm-diameter pots (Dillen) and placed on two benches in a double-layer polyethylene-glazed greenhouse covered with 35% shadecloth. Plants were grown under natural photoperiod with day/night temperature setpoints at 23.9/18.3 °C

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Dewayne L. Ingram

of GHG emissions in agriculture as well as stimulating yield increases ( Brentrup and Palliere, 2008 ; Hillier et al., 2009 ). Plastic greenhouse covers and containers represented a significant portion of the carbon footprint for floral crops in

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was the defect most affected by shade. Among sensitive cultivars, up to 35% of the fruit produced in greenhouses with no shade had cracked skin, whereas in greenhouses covered with 50% shade, only 24% to 26% of the tomatoes had cracked skin. There was

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Martin P.N. Gent and Richard J. McAvoy

and flow floors. Crops of potted plants were grown on flooded floors. A (9 × 18 m) single-truss greenhouse covered with a double layer of polyethylene film covered two separate but similar flooded floors. Each floor was 5.5 × 6.7 m in area with a

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Myles Lewis, Chieri Kubota, Russell Tronstad and Young-Jun Son

any heating system. Climate control may be done with a simple thermostat to control the vents. High tunnels can be included in this category. The medium-technology level is anything between these two categories, including a greenhouse covered with