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Efstathia Exadaktylou, Thomas Thomidis, Brian Grout, George Zakynthinos and Constantinos Tsipouridis

sand (total porosity 35%, waterholding capacity 25%) and perlite (total porosity 75%, waterholding capacity 20%; Argyrometalevmaton and Varytins, Mylos, Greece). The temperature at the base of cuttings was maintained at 18 ± 2 °C. Cuttings were held in

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Eugene K. Blythe and Donald J. Merhaut

one organic component (with the exception of blend 1, which contained soil and perlite but no organic components). Individual components in each substrate blend (expressed as percent by volume before blending) are shown in Table 2 . Table 1

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Elio Jovicich, Daniel J. Cantliffe, Peter J. Stoffella and Dorota Z. Haman

media commonly used in Florida's greenhouse vegetable industry are perlite, pine bark, and commercial peatmoss-based mixtures. These media have adequate aeration porosity and water-holding capacity ( Burés, 1997 ; Pokorny, 1987 ; Raviv et al., 2002

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Myung Min Oh, Young Yeol Cho, Kee Sung Kim and Jung Eek Son

experiment. Irrigation was controlled using the timer function of the CR10X (Campbell Scientific, Logan, Utah). For equal compaction, all pots filled with the medium composed of peatmoss and perlite were dropped 20 times from a height of 3 cm. Determination

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Maria Papafotiou, Barbara Avajianneli, Costas Michos and Iordanis Chatzipavlidis

Potted ornamental plants are grown mostly in substrates that consist of peat and an inorganic material like perlite and vermiculite. In recent years the use of peat in horticulture has been under discussion because it is considered a nonrenewable

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Vickie Murphy, Kimberly Moore, M. Patrick Griffith and Chad Husby

, perlite, and pine bark have been commonly used to grow Zamia plants. Organic mixtures containing peat, pine bark, and/or sphagnum have the disadvantage of decomposing rapidly, resulting in a compressed substrate that inhibits air circulation to roots

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Sabrina J. Ruis, Humberto Blanco-Canqui, Ellen T. Paparozzi and Russ Zeeck

Soilless mixes that include components of peat, perlite, vermiculite, and other organic materials are commonly used in the greenhouse industry ( Barrett et al., 2016 ; Vaughn et al., 2011 ). The most common organic component of soilless mixes is

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Kristin L. Getter and Dale W. Rozeboom

ATC and Canadian sphagnum peatmoss (Lambert Peat Moss, Rivière-Ouelle, QC, Canada) were formulated, all containing 20% medium grade horticultural perlite (P.V.P. Industries, North Bloomfield, OH). The control consisted of 80% peat with 0% ATC (80P:0A

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Christopher J. Currey, Diane M. Camberato, Ariana P. Torres and Roberto G. Lopez

Lieth, 2008 ). Vermiculite and perlite are common inorganic components, while peat and pine bark are common organic components of soilless substrates used in the production of potted greenhouse crops ( Dole and Wilkins, 2004 ; Fonteno, 1996 ). Numerous

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Derald A. Harp, Cheng Chen and Curtis Jones

methods Substrates analysis. Four green roof substrates and a peat/perlite growing substrates were obtained from commercial sources ( Table 1 ). Before initiation of the germination study, three subsamples of each substrate were sent to the Horticultural