Evaluation of the Use of Light Emitting Diodes (LEDs) in the Production of Cut Gerbera

Evaluation of the Use of Light Emitting Diodes (LEDs) in the Production of Cut Gerbera

This final report from University of Guelph evaluates LumiGrow’s commercially-available, Pro 325 LED fixtures for the production of cut gerbera by direct comparison with HPS using concurrently- replicated greenhouse trials during the 2013-14 supplemental lighting season (ie. Nov. to Mar.).

The objective of this project was to evaluate light emitting diode (LED) technology for use as assimilation lighting for the greenhouse production of cut flowers in northern climates, during the normal supplemental lighting season in the northern regions of North America (e.g. Guelph: 43.5500° N, 80.2500° W); which is approximately early November through late March. To maximize the usefulness of the results to the growers, the LED lighting was directly compared to industry standard high pressure sodium (HPS) lighting systems and was done using carefully-designed experimental protocols to ensure a high level of statistical reliability of the results. This collaborative research project involved representatives from the horticultural lighting industry (LumiGrow Inc), greenhouse cut flower growers (Rosa Flora) and researchers from Dr. Youbin Zheng’s Environmental Horticulture research group at the University of Guelph.

Authors

David Llewellyn, University of Guelph, Guelph, Ontario, Canada

Katie Vinson, University of Guelph, Guelph, Ontario, Canada

Dr. Youbin Zheng, University of Guelph, Guelph, Ontario, Canada

Special Thanks

International Cut Flower Growers Association,  Joseph H. Hill Memorial Foundation, Inc., Rosa Flora