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Greenhouse Production Research Group

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Mission: To conduct fundamental and applied research on production technologies, environmental conditions, pests and diseases, and abiotic stresses for controlled environment agriculture (greenhouses and indoor farms) while safeguarding the environment, plant quality, and worker safety. To transfer that technology to the industry through partnerships with state extension services and direct stakeholder interactions.


Wolfe Hall at the University of Toledo

Dr. James Altland, Research Leader and Research Horticulturist (Wooster)
(330) 263-3870 

Dr. Jennifer Boldt, Research Horticulturist (Toledo)
(419) 530-2225   

Dr. Kale Harbick, Research Agricultural Engineer (Toledo)
(541) 505-1980
Dr. Shin-Yi Lee Marzano, Research Molecular Biologist (Toledo)
(419) 530-5053


Recent Publications

Effect of drought and carbon dioxide on nutrient uptake and levels of nutrient‐uptake proteins in roots of barley. (2020) PDF

Blue radiation interacts with green radiation to influence growth and predominantly controls quality attributes of lettuce. (2020) PDF

Physical and hydraulic properties of commercial pine-bark substrate products used in production of containerized crops. (2019) PDF

Lime rate affects substrate pH and container-grown birch trees. (2019) PDF

Research priorities of the environmental horticultural industry founded through consensus. (2019) PDF

Dolomite and micronutrient fertilizer affect phosphorus fate in pine bark substrate used for containerized nursery crop production. (2019) PDF

Efficacy of preemergence herbicides over time. (2019) PDF

Silicon alleviates long-term copper toxicity and influences gene expression in Nicotiana tabacum. (2019) PDF

Timing of a short-term reduction in temperature and irradiance affects growth and development of four annual bedding plants. (2019) PDF

Comparison of supplemental lighting provided by high-pressure sodium lamps or light-emitting diodes for the propagation and finishing of bedding plants in a commercial greenhouse. (2019) PDF

Elevated carbon dioxide plus chronic warming causes dramatic increases in leaf angle in tomato, which correlates with reduced plant growth. (2018) PDF


Contact Us
The Greenhouse Production Research Group is located at the University of Toledo.
Physical location: 4271A Wolfe Hall
Tel: 419-530-2225
Fax: 419-530-1599
2801 W Bancroft Street MS 604
Toledo, OH 43606