Lighting

Including Far Red in an LED Lighting Spectrum

Far red (FR) is a one of the radiation (or light) wavebands that regulates plant growth and development. Many people consider FR as radiation with wavelengths between 700 and 800 nm, although 700 to 750... more »

Managing Light Pollution

Greenhouse owners and operators are increasingly adding supplemental lighting to increase plant growth. The virtues of high-intensity lighting have been known for decades, but installations are increasingly common as developments in conventional and LED lighting... more »

An Overview of Long-Day Lighting

Long-day lighting refers to the delivery of long photoperiods, or day lengths, to regulate the flowering of plants. More specifically, when the days are naturally short, the delivery of electric lighting can delay or prevent... more »

Lighting young plant propagation

Indoor Grow Rooms Can Improve the Success of Young Plant Propagation

Although light is a critical factor in the propagation of plants produced from seed and vegetative cuttings, it is only one of the components of propagation. “Initially the light conditions are important, including light quality... more »

Horticulture’s History with Disruptive Technology: LED Lighting Takes Its Turn

Our greenhouse industry has an impressive history of embracing disruptive change and each of us has a personal perspective regarding time and change. One reference point for all of us is measured in terms of... more »

Is Green Light Useful to Plants?

Fact or fiction: Green light is not useful for photosynthesis. While I don’t hear or read this statement as often as I used to, it is a myth that continues to be perpetuated by people... more »

DLI ‘Requirements’

The DLI refers to the daily light integral, which simplistically is the total amount of photosynthetic light delivered to plants each day. More technically, it is the integrated photon flux density between 400 and 700... more »

Signify to Open North American Production Facility

Signify  has announced plans to significantly reduce delivery times for Philips GreenPower LED customers in North America as it adds a horti LED production line at its existing luminaire factory in Camargo, Mexico. Previously, the... more »

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GPN recognizes 40 industry professionals under the age of 40 who are helping to determine the future of the horticulture industry. These individuals are today’s movers and shakers who are already setting the pace for tomorrow.

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