Question on lights in a tent
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- 12/12 gg#4 growing cannabis lights
New Age United
Well-Known Member
Some say it will stress the plant out however there is some light that gets into my tent during the off hours and I haven't noticed any affect at all.
YouGrowYourWay
Well-Known Member
Id cover all light including green no offense renfro either just my opinion but then the debate comes into play how much true darkness do plants even need, outdoors you have the moon and light pollution maybe only a few true hours of complete darkness idk just thinking aloud lol
Renfro
Well-Known Member
No offense taken at all. I have been doing this a long time and I used to worry about it too. My autopilot controllers are green LED and I don't bother covering them. Never had issues. That said, I also work in the dark using a green LED headlamp, watering or whatnot. Never had problems. So I suppose I just don't worry about it anymore at all. Perhaps my plants are just used to it? Maybe if they are like that from veg onward they don't see it as anything out of the ordinary.
YouGrowYourWay
Well-Known Member
I believe it I've seen alot done that's not supposed to be done and seen benefits reaped but for a fun search cause I'm not gonna sit here and preach like I know this but green light effect on plants has a shit load of good reads...I also swear I read something somewhere about it reaching deeper in the leaf and affecting another part of the plant that I cant remember ugh memory issues lol but imo with you're headlamps it's not even enough light to effect them like my name you grow your way
Renfro
Well-Known Member
Something I found on ICMAG just now:
"I got a responce. Im reposting it here. This is from guineapig
Green Light, if you can provide pure green light, does not affect the flowering period, you
should be able to use it without causing problems in flowering, which is what cannabis
growers are concerned with.
Recently they have done experiments with green light, and green light does play a role in
certain metabolic processes such as "shade avoidance." If I had to guess, I would say
that shining green light on a plant makes the plant say "I must be around so many green
plants, it must be hard for me to reach sunlight" and so it wiggles around laterally to
try to find new pockets of light. This would result in an increase in overall plant mass,
which is what experiments have proved in the past, but they didn't understand exactly
why plants grown with green light had more mass than plants grown without it.
I also think they have discovered a green-light receptor. When I worked with a scientist
who was a cryptochrome (the blue-light receptor) expert, she said that they were on the
hunt for a green-light receptor because there was experimental evidence that it exists.
There are probably other ways in which plants respond to green light, but they have not
been experimentally proven as of yet. I really don't believe that flower development can
be altered in any way by either increasing or decreasing the amount of green light shining on a plant.
I have to study on what "shade avoidance" means, I have only casually read about this
concept. I am not sure if that necessarily implies growth of lateral branches, or maybe
just slight twisting of the primary meristem, or whatever.
It would be an interesting side-by-side experiment to grow a plant with large amounts of
green light vs. a plant with small amounts (or virtually zero) green wavelength. All the
experiments I have read about saw an increase in plant mass with additional green light,
and came to the conclusion that a green light receptor must exist."
Been a while since I have given this much thought.
"I got a responce. Im reposting it here. This is from guineapig
Green Light, if you can provide pure green light, does not affect the flowering period, you
should be able to use it without causing problems in flowering, which is what cannabis
growers are concerned with.
Recently they have done experiments with green light, and green light does play a role in
certain metabolic processes such as "shade avoidance." If I had to guess, I would say
that shining green light on a plant makes the plant say "I must be around so many green
plants, it must be hard for me to reach sunlight" and so it wiggles around laterally to
try to find new pockets of light. This would result in an increase in overall plant mass,
which is what experiments have proved in the past, but they didn't understand exactly
why plants grown with green light had more mass than plants grown without it.
I also think they have discovered a green-light receptor. When I worked with a scientist
who was a cryptochrome (the blue-light receptor) expert, she said that they were on the
hunt for a green-light receptor because there was experimental evidence that it exists.
There are probably other ways in which plants respond to green light, but they have not
been experimentally proven as of yet. I really don't believe that flower development can
be altered in any way by either increasing or decreasing the amount of green light shining on a plant.
I have to study on what "shade avoidance" means, I have only casually read about this
concept. I am not sure if that necessarily implies growth of lateral branches, or maybe
just slight twisting of the primary meristem, or whatever.
It would be an interesting side-by-side experiment to grow a plant with large amounts of
green light vs. a plant with small amounts (or virtually zero) green wavelength. All the
experiments I have read about saw an increase in plant mass with additional green light,
and came to the conclusion that a green light receptor must exist."
Been a while since I have given this much thought.
Renfro
Well-Known Member
"... All the
experiments I have read about saw an increase in plant mass with additional green light,
and came to the conclusion that a green light receptor must exist."
This green light response may be a reason why full spectrum LED or the fuller spectrum of a CMH seems to make the plants happier.
experiments I have read about saw an increase in plant mass with additional green light,
and came to the conclusion that a green light receptor must exist."
This green light response may be a reason why full spectrum LED or the fuller spectrum of a CMH seems to make the plants happier.
YouGrowYourWay
Well-Known Member
Ayyeee that's the article I read lol thanks
PrometheanLeaf
Well-Known Member
Better question is why take the chance when tape is so cheap?
T macc
Well-Known Member
Don't mean to de-rail from the topic, but I believe green light has more benefits to plant mass than we realize. If you look at the full spectrum of the sun, it peaks in green light. The McCree curve suggests that plants don't utilize green as much as other colors, but plants outside under the sun are much larger in size. The shade avoidance mentioned in the text above makes sense. If the sun peaks in green, and plants grow large outside, there must be benefits
YouGrowYourWay
Well-Known Member
Green
Green light has been proven to increase plant mass when mixed with red again not gonna act like I know this for facts just articles I read from the Google search green light effects on plants
coreywebster
Well-Known Member
Green is partly used as shade avoidance, it works like this. Green is reflected to a degree but also absorbed and used for photosynthesis and some passes through the leaves completely. When there is only green light the plants think they have to compete for light because neighbours are blocking the other parts of the spectrum .
Michigan state have done a few studies on the effects of various proportions of R/G/B light. Worth a read if you ever fancy it.
Renfro
Well-Known Member
Great read, thanks for sharing!
YouGrowYourWay
Well-Known Member
That's the one lol thanks
If I wasn't working I'd have posted it so you're the man lol