Just attended a fantastic conference on greenhouse lighting! Pictured is the new set of greenhouses at Colorado State University, where the conference was held. CSU’s Horticulture Center is fully outfitted with LED lighting in partnership with Philips Horticulture (http://www.usa.lighting.philips.com/products/horticulture.html). Speakers at the conference presented the latest in LED lighting technology for greenhouse and controlled environment purposes. We also learned about specific ways LED lighting can be utilized to solve specific problems, such as in tissue culture and plant propagation.
A few tidbits:
- LED lighting works. The way it works on different species is not consistent however.
- Using LED as the sole source of illumination for crop production also works.
- Plants started as tissue culture showed greater rooting under LED lights than those grown in the greenhouse.
- LED lights reduce crop production time in many cases.
- Stems and petioles tend to be shorter under high blue light.
- For plant height control, seedlings grown under LED lights tend to be more compact and in some cases, may be substituted for applications of plant growth regulators.
- Utilization of LED lighting influences plant water relations in ways we are just now starting to understand.
- Responses to LED lights varies with plant species.
Stay tuned for more.