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Benedict C. Posadas, Patricia R. Knight, Randal Y. Coker, Christine H. Coker, Scott A. Langlois, and Glenn Fain

The nursery and greenhouse industry is often described as one of the fastest-growing sectors of U.S. agriculture and is inherently labor intensive ( Regelbrugge, 2007 ). To sustain robust growth in the industry, continuous improvements in the skills

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Benedict Posadas

With the tightening in the regulations regarding migrant workers, the nursery and greenhouse industry is facing a critical shortage of labor ( Posadas et al., 2004 ). Migrant labor issues are a major concern facing agriculture and especially the

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Krishna Nemali

Greenhouse cultivation involves growing crops inside structures covered with a transparent material that protects from extreme weather and unfavorable climatic conditions. In addition to greenhouses, there are other forms of protected cultivation

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Oliver Körner, Jesper Mazanti Aaslyng, Andrea Utoft Andreassen, and Niels Holst

During the last 20 years, several dynamic temperature regimes were designed for greenhouse energy-saving (e.g., Aaslyng et al., 1999 ; Bailey, 1985 ; Bailey and Seginer, 1989 ; Buwalda et al., 1999 ; Körner and Challa, 2003a ; Seginer et al

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Christopher J. Currey, Ann Marie VanDerZanden, and Joshua J. Mitchell

, including greenhouses using hydroponic systems, has increased by $243 million (44%) between 2009 and 2014 ( U.S. Department of Agriculture, 2009 , 2015 ). Hydroponic and controlled-environment food crop production provides opportunities to improve the

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Alexander G. Litvin, Christopher J. Currey, and Lester A. Wilson

., 2006 ), air temperature ( Chang et al., 2005 ), and light intensity and duration ( Beaman et al., 2009 ; Chang et al., 2008 ). Traditionally, broad-spectrum lamps such as HPS or metal halide have been used for supplemental greenhouse lighting, but

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Stephanie E. Burnett, Donglin Zhang, Lois B. Stack, and Zhongqi He

at stem tips. Because it flowers prolifically and has interesting flowers and foliage, fan flower is a popular plant for use in hanging baskets or combination planters and is thus a commercially important species for many greenhouse growers

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Tian-Ye Chen, Chang-chi Chu, Thomas J. Henneberry, and Kai Umeda

We thank Roger M. Rapanut of McK Greenhouses Company, Mesa, Ariz., for his generosity of providing the poinsettia greenhouse for this study. Twanee Wilbur, Amy Opper, and Otto Isensee helped with insect counting. We appreciate the constructive

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Brian K. Hogendorp and Raymond A. Cloyd

We thank Nathan Campbell, owner of Danville Gardens (Danville, Ill.), for his cooperation in allowing us to use his greenhouse facilities for this study. We also wish to acknowledge Jack Juvik, Department of Natural Resources and Environmental

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Michael D. Orzolek, Cathy Thomas, Robert D. Berghage, and Paul R. Heller

82 POSTER SESSION 12 Greenhouse Management/Cross-Commodity