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Alison Bingham Jacobson, Terri W. Starman, and Leonardo Lombardini

before they are watered. Either watering regimen is detrimental to plant health and hastens their decline in postharvest quality and shelf life at the retail level. Hardening off, or toning, at the end of the greenhouse production cycle by reducing

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D. Scott NeSmith and John R. Duval

Transplants for both vegetable and floral crops are produced in a number of various sized containers or cells. Varying container size alters the rooting volume of the plants, which can greatly affect plant growth. Container size is important to transplant producers as they seek to optimize production space. Transplant consumers are interested in container size as it relates to optimum post-transplant performance. The following is a comprehensive review of literature on container size, root restriction, and plant growth, along with suggestions for future research and concern.

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Susmitha Nambuthiri, Amy Fulcher, Andrew K. Koeser, Robert Geneve, and Genhua Niu

production systems. This article provides an update on advancements in the development of alternative biocontainers in nursery and greenhouse production, with the hope of fostering future research and adoption by the green industry. Types of alternative

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Wendy L. Zellner

Silicon (Si) absorption is highly variable among different plant types; however, few studies have examined variations among different cultivars within a single species. In this study, 10 different tomato cultivars, including determinants and indeterminants as well as hybrids and heirlooms, were hydroponically grown in the presence or absence of Si to determine the absorption and distribution of the nutrients in roots, stems, petioles, and leaves. A total elemental analysis revealed that Si concentrations significantly increased with Si treatment, and that root concentrations were significantly higher than those in leaves. Although a few species showed differences in carbon, nitrogen, and calcium concentrations in roots and leaves with Si treatment, many of the macronutrients and micronutrients were unaffected. These data suggest that tomato plants absorb Si within the macronutrient range and restrict its movement from roots to shoots.

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Renee Conneway, Sven Verlinden, Andrew K. Koeser, Michael Evans, Rebecca Schnelle, Victoria Anderson, and J. Ryan Stewart

Recent decades have seen tremendous strides in improving the sustainability of greenhouse production ( Nelson, 2012 ). The introduction of closed-loop irrigation, integrated pest management, energy-efficient greenhouse designs, improvements in

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James A. Schrader, Gowrishankar Srinivasan, David Grewell, Kenneth G. McCabe, and William R. Graves

suggested that containers made of high-percentage soy plastic (soy plastic that was not blended with other materials) degraded too quickly for use in greenhouse production and produced an excessive fertilizer effect. Therefore, our first two experiments were

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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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Yanjun Guo, Terri Starman, and Charles Hall

water usage during greenhouse production increased water use efficiency in American alumroot ( Heuchera americana ), gaura ( Gaura lindheimeri ), impatiens ( Impatiens walleriana ), salvia ( Salvia splendens ), and vinca ( Catharanthus roseus ) ( Burnett

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Nathan J. Herrick and Raymond A. Cloyd

Fungus gnat, Bradysia sp. nr. coprophila (Lintner) (Diptera: Sciaridae), larvae can damage plants grown in greenhouse production systems, especially during propagation ( Cloyd, 2000 ). Fungus gnat larvae feed on plant roots, which inhibits the

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Jiwoo Park and James E. Faust

plant growth regulator applied to bedding plants can be reduced. Although these trends in greenhouse production are typically viewed as positive, one recent observation is that consumer performance has been negatively impacted (M. Kramer, personal