Applied Botany: Using far-red Light to help ensure Dark period.

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LarsOG86

New Member
I was reading a book and came across this science part:

The Science:
-"Phytochrome receives light cues and initiates a mobile signal that propagates throughout the plant and induces flowering."
-"Red light activates phytochrome...Far-red light inactivates phytochrome."

The Application:
- during the dark period of the flowering cycle have several far-red LED shining on your plants.
The Hypothesis:
-doing so will help keep counteract the effects of minor light leaks and ensure that your plants have a full dark cycle.

TLDR:
-Using Far-red light on your plants during night cycle help ensure that the plants see that it is nighttime by inactivating phytochrome.


Side note:
-granted, this isn't necessary, but could be a neat little trick to try out to help ensure you get those full 12 hours of uninterupted darkness
 
T

T.H.Cammo

Well-Known Member
I don't know what you mean by TLDR - but anyway:

"TLDR:
-Using Far-red light on your plants during night cycle help ensure that the plants see that it is nighttime by inactivating phytochrome."

If the last light your plants see at "lights out" time is far-red light, they will go into "sleep-mode" a lot faster, this is known as "The Emmerson Effect". The trick is to turn on the far-red lights (for just a few minutes) just after your regular lights are off. Google it for a complete explaination.

I don't think leaving a "far-red" light source on all "night" would be a good idea. Your plant would still react to it as a light source, just not a PAR light source. As such, it would still send a flowering plant back into veg.

By the way - Halogen Lights are an exellent source of far-red light, so they are good for something after all.
 
Bad Karma

Bad Karma

Well-Known Member
LarsOG86 said:
I was reading a book and came across this science part:

The Science:
-"Phytochrome receives light cues and initiates a mobile signal that propagates throughout the plant and induces flowering."
-"Red light activates phytochrome...Far-red light inactivates phytochrome."

The Application:
- during the dark period of the flowering cycle have several far-red LED shining on your plants.
The Hypothesis:
-doing so will help keep counteract the effects of minor light leaks and ensure that your plants have a full dark cycle.

TLDR:
-Using Far-red light on your plants during night cycle help ensure that the plants see that it is nighttime by inactivating phytochrome.


Side note:
-granted, this isn't necessary, but could be a neat little trick to try out to help ensure you get those full 12 hours of uninterupted darkness
Click to expand...
You should come see the science in action...https://www.rollitup.org/f/led-and-other-lighting.124/
 
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