What is
Far-Red light?

 

Far-red light (> 700 nm wavelength) is at the very edge of the photosynthetically active radiation (PAR) and visible spectrum, and falls outside the PAR range of 400-700nm.

Different wavelengths of light have different photosynthetic efficiency, peaking in the red and blue regions. Although photosynthetic efficiency falls sharply for wavelengths longer than 685 nm, far-red light enhances the photosynthetic efficiency of shorter wavelength light.

Delivering far-red light to the crop at certain times allows growers to manipulate plant responses, flower faster, and boost yield. GrowFlux’s platform is built to help growers leverage far-red and intelligent lighting control.

 
Far red spectrum distribution of a typical 730 nanometer LED used for horticulture

Far red spectrum distribution of a typical 730 nanometer LED used for horticulture

 
A far-red LED commonly used in horticultural lighting, measuring 3.5mm x 3.5mm

A far-red LED commonly used in horticultural lighting, measuring 3.5mm x 3.5mm

 

How Far-Red light drives profitability

 
  1. Grow crops faster

    Far-red light, delivered only at specific times of the day, acts on photoreceptors in short day flowering plants, accelerating flowering and ultimately reducing time to harvest. GrowFlux’s customers are often growing cannabis 15% faster using our tunable far-red Light Formulas.

 
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2. Boost photosynthetic efficiency

A small absolute quantity of far-red light delivered during the day can boost the crop’s ability to metabolize with PAR spectrum light in the 400-700nm range. We typically see about a 10-15% increase in yield between light formulas with and without far-red light.

 
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3. Manipulate crop responses

Fine tuning the ratio of red to far-red light allows growers to induce shade avoidance responses in the crop, which can be used to boost leaf area and radiation capture in the earliest stages of growth. GrowFlux offers light formulas and tunable controls to fully leverage this effect.


Leverage Far-red light with GrowFlux’s lighting controls

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Download our Far-Red
Growers Guide to learn more

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