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Fengyun Zhao, Junli Sun, Songlin Yu, Huaifeng Liu, and Kun Yu

China are more than 1.33 × 10 3 km 2 ( Zhao et al., 2018 ). The intensive production, excessive irrigation, agricultural machinery, excessive fertilization, and reduced tillage in greenhouse grape cultivation and other factors all lead to soil

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Shichao Wang, Xinlu Bai, Jianbin Zhou, and Zhujun Chen

greenhouses is a concern, not only for crop production but also for the environment. Overirrigation is another problem in solar greenhouses. The irrigation rates in some greenhouses ranged from 5000 to 9000 m 3 ·ha –1 in a growing season, which was several

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Maria L. Burgos-Garay, Chuanxue Hong, and Gary W. Moorman

Recycling of irrigation water in commercial greenhouses is implemented as a strategy to minimize water and pesticide or fertilizer runoff from contaminating the environment ( Hong and Moorman, 2005 ; Hu et al., 2008 ). However, recycling water

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Hardeep Singh, Megha R. Poudel, Bruce Dunn, Charles Fontanier, and Gopal Kakani

conditions compared with sufficient N supply. The objective of the study was to evaluate the effect of CO 2 supplementation with precision irrigation and fertilizer management of greenhouse-grown ornamentals. We hypothesized that CO 2 supplementation would

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Ida Di Mola, Youssef Rouphael, Giuseppe Colla, Massimo Fagnano, Roberta Paradiso, and Mauro Mori

present study reveals that plant growth parameters and marketable fresh yield of greenhouse lettuce decreased linearly with increasing salinity of irrigation water especially at 3.6 and 7.2 dS·m −1 . The reduction in yield could be partly compensated by a

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Marc W. van Iersel, Matthew Chappell, and John D. Lea-Cox

difficult to apply in greenhouses, nurseries, or both with a large variety of species and cultivars or in situations where accurate K c values may not be available. Another option is the combined use of sensors and models, where irrigation could be

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Sadman Islam, Mark Lefsrud, Jan Adamowski, Blake Bissonnette, and Allison Busgang

campus. The Horticulture Services Building is used as a storage, processing, and retail space for the activities that occur in the surrounding gardens and the two greenhouses. Irrigation of the greenhouses consumes ≈700 gal of freshwater per day. The

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Joshua Knight, Dewayne L. Ingram, and Charles R. Hall

) greenhouse production of a 72-cell tray annual foliage using overhead irrigation sourced from well water in central Florida, and d) greenhouse production of a 72-cell tray annual foliage using ebb and flood sourced from rainfall capture in central Florida

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William R. Argo, John A. Biernbaum, and Darryl D. Warncke

Chemical analyses of 4306 randomly selected greenhouse water samples for 1995 from the United States and Canada were obtained from four analytical laboratories and graphically characterized using a distribution analysis. For pH, electro-conductivity (EC), and nutrient concentrations, a mean and median value and the percentage of samples with concentrations above or below those generally considered acceptable are presented for all samples and the 10 leading states in floricultural production. The median nutrient concentrations were more representative of the type of water found throughout the United States and Canada than that of the mean values because of the unequal distribution of the data. The overall median water source had a pH of 7.1; an EC of 0.4 dS·m−1; an alkalinity of CaCO3 at 130 mg·L−1; (in mg·L−1) 40 Ca, 11 Mg, 8 SO4−S, 13 Na, 14 Cl, 0.02 B, and <0.01 F; a Ca: Mg ratio of 3.2, and a sodium adsorption ratio (SAR) of 0.7. The information presented characterizes irrigation water and may assist in developing more refined fertilizer recommendations for greenhouse crop production.

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Stephanie A. Beeks and Michael R. Evans

of the research conducted on the physical properties of biocontainers has been focused on short-term crops such as annual bedding plants grown using overhead irrigation systems. However, many greenhouse crops are grown as potted florist crops that