Doomhammer69
Well-Known Member
https://www.rollitup.org/t/plants-start-drooping-towards-the-end-of-the-day.476710/
I'm not the only one.
I'm not the only one.
Running hps 13/11 to increase yield
- Thread starter Vonkins
- Start date
Olive Drab Green
Well-Known Member
Sure, but neither of you are for that reason. Otherwise, all cannabis would react the same, and it doesn't. Ergo, it isn't replicable.
Cx2H
Well-Known Member
Greetings, I use a 10/14 actually.
Not a 14/10 or 13/11
Cannabis is a “short day/long night” plant, meaning it needs those conditions to bloom. The system cannabis uses to detect light changes is a group of receptors in the pigments of their leaves. There are 2 different receptors, each with a different task: Phytochrome Red and Phytochrome Far Red. They absorb light in different wavelengths and transmit that information to the plant.
Far-Red can be manipulated through the amount of light given to the plant. This receptor keeps the plant in the vegetative stage. Light in the far-red spectrum will signal this receptor to pass the chemical signal to veg. During times of light, both receptors are balanced in number, but in darkness, Far-Red receptors slowly change into Red receptors.
With longer dark periods, the number of Far-Red receptors reduces until there aren’t enough to counter the signal from the Red receptors, which tell the plant to flower.
Want to speed up your switch from veg to flower? Give plants an uninterrupted 24-36 hours of darkness before going to a 12-12 cycle. It will make more of the Far-Reds change into Reds, giving a more powerful signal to your plant that it is time to bloom. Normally, the transition can take a couple of weeks to be seen on your plants. By giving them a really long night, you can speed this up dramatically.
cite: http://herb.co/2016/06/16/high-science-importance-cannabis-dark-cycle/
*Excluding auto-flowering strains
Not a 14/10 or 13/11
Cannabis is a “short day/long night” plant, meaning it needs those conditions to bloom. The system cannabis uses to detect light changes is a group of receptors in the pigments of their leaves. There are 2 different receptors, each with a different task: Phytochrome Red and Phytochrome Far Red. They absorb light in different wavelengths and transmit that information to the plant.
Far-Red can be manipulated through the amount of light given to the plant. This receptor keeps the plant in the vegetative stage. Light in the far-red spectrum will signal this receptor to pass the chemical signal to veg. During times of light, both receptors are balanced in number, but in darkness, Far-Red receptors slowly change into Red receptors.
With longer dark periods, the number of Far-Red receptors reduces until there aren’t enough to counter the signal from the Red receptors, which tell the plant to flower.
Want to speed up your switch from veg to flower? Give plants an uninterrupted 24-36 hours of darkness before going to a 12-12 cycle. It will make more of the Far-Reds change into Reds, giving a more powerful signal to your plant that it is time to bloom. Normally, the transition can take a couple of weeks to be seen on your plants. By giving them a really long night, you can speed this up dramatically.
cite: http://herb.co/2016/06/16/high-science-importance-cannabis-dark-cycle/
*Excluding auto-flowering strains
They are growing...?
Olive Drab Green
Well-Known Member
He thinks plants sleep after 18 hours of light.
Doomhammer69
Well-Known Member
Nice info thanks, question you are talking about flowering right and not veg with the 10-14? The reason I ask is I have read where some people like to run there plants from start to finish closer to mother nature, and the 10-14 sounds like that would be about right.Greetings, I use a 10/14 actually.
Not a 14/10 or 13/11
Cannabis is a “short day/long night” plant, meaning it needs those conditions to bloom. The system cannabis uses to detect light changes is a group of receptors in the pigments of their leaves. There are 2 different receptors, each with a different task: Phytochrome Red and Phytochrome Far Red. They absorb light in different wavelengths and transmit that information to the plant.
Far-Red can be manipulated through the amount of light given to the plant. This receptor keeps the plant in the vegetative stage. Light in the far-red spectrum will signal this receptor to pass the chemical signal to veg. During times of light, both receptors are balanced in number, but in darkness, Far-Red receptors slowly change into Red receptors.
With longer dark periods, the number of Far-Red receptors reduces until there aren’t enough to counter the signal from the Red receptors, which tell the plant to flower.
Want to speed up your switch from veg to flower? Give plants an uninterrupted 24-36 hours of darkness before going to a 12-12 cycle. It will make more of the Far-Reds change into Reds, giving a more powerful signal to your plant that it is time to bloom. Normally, the transition can take a couple of weeks to be seen on your plants. By giving them a really long night, you can speed this up dramatically.
cite: http://herb.co/2016/06/16/high-science-importance-cannabis-dark-cycle/
*Excluding auto-flowering strains
They are growing...?
Olive Drab Green
Well-Known Member
It wouldn't veg in 10/14 to begin with. But yes, because the plant accumulates its flowering hormone at night, what his data indicates is that it would be beneficial to run 10/14 instead of 12/12 for flower.
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Roger A. Shrubber
Well-Known Member
plants aren't people, they don't sleep at all, but they do have a saturation point where the cells they use as "fuel tanks" are full. they continue to use a fraction of the light they are receiving to fuel ongoing processes. the stored fuel is for when the lights go out. they will grow during the night till the fuel is used up.
you never HAVE to give them any night at all, but they seem to actually show accelerated growth during the period they're using that stored fuel.
most plants "droop" because they're losing water to transpiration, you say they droop in the afternoon, traditionally the hottest part of the day. i'd say its much more likely your plants are drooping due to heat/low rh than that they are taking a nap.
you never HAVE to give them any night at all, but they seem to actually show accelerated growth during the period they're using that stored fuel.
most plants "droop" because they're losing water to transpiration, you say they droop in the afternoon, traditionally the hottest part of the day. i'd say its much more likely your plants are drooping due to heat/low rh than that they are taking a nap.
Doomhammer69
Well-Known Member
I know I may have used the word sleep, and that's my fault however I stand by the statement where I believe the plants are done for the day, and they recognize its getting close to lights out and they ( appear to shut down)
RM3
Well-Known Member
Google Mid Day Depression in Plants
Chunky Stool
Well-Known Member
So the ideal day/night ratio would depend on total PAR?
Roger A. Shrubber
Well-Known Member
it would seem so to me
BobCajun
Well-Known Member
The plants do droop their leaves just before the day ends. That's because they want to avoid moonlight, which could cause some problems with the flowering process. Anyone who hasn't seen that happen either hasn't grown for long, isn't very observant or somehow only ever had strains that don't droop, if such strains exist. I've seen it countless times, being that it happens every day. No, it doesn't mean they're getting ready to sleep though.
Much less light hits leaf surfaces when they're drooped down. It's not just Cannabis either. There are other plants that do it. You can find this easily enough with google. You might say plants can't tell that the light is going to go off in half an hour or whatever, but you'd be wrong. They store only as much starch as is required to get it through the night. How do they know how long that will be? Because they have internal clocks of a sort.
Now @doomhammer, do you ever get nanners on your plants? I've read that very short days can do that. Maybe it's only certain strains that are prone to it though.
Much less light hits leaf surfaces when they're drooped down. It's not just Cannabis either. There are other plants that do it. You can find this easily enough with google. You might say plants can't tell that the light is going to go off in half an hour or whatever, but you'd be wrong. They store only as much starch as is required to get it through the night. How do they know how long that will be? Because they have internal clocks of a sort.
Now @doomhammer, do you ever get nanners on your plants? I've read that very short days can do that. Maybe it's only certain strains that are prone to it though.
Olive Drab Green
Well-Known Member
Moonlight is actually reflected sunlight. Would you mind telling me 1. How it can avoid moonlight by drooping and 2. Why reflected sunlight could even possibly cause potential issues in veg if 24/0 itself causes no issues?
I've never had it droop before lights-off simply because up until recently, I've run them at 24/0. Even since switching to Gaslight Timing, I'm not seeing any pre-night droop.
I'm not arguing with you, just trying to get your perspective. I would only say that it doesn't droop to avoid moonlight, just that it gets less light in the evening and night, so there is no upward negative pressure in the plant, thus it droops.
BobCajun
Well-Known Member
"I’m sure many of you are familiar with the folding of leaves that we see in the clover growing in your lawns and lots of plants in the garden fold up their leaves at night. Darwin was interested in this and thought that it was to do with the leaves trying to maintain their heat balance at night. What we think is happening now is that the leaves are trying to avoid moonlight so as to prevent their circadian rhythms being disrupted by those very light intensities because they certainly do respond to moonlight. In fact, it’s now known that lots of animals – animals as diverse as snakes and crocodiles and a whole array of plants and different systems including humans – are highly sensitive to moonlight and the way that it can interrupt our circadian control and our sensing of day length."
http://www.thenakedscientists.com/HTML/questions/question/1769/
Olive Drab Green
Well-Known Member
Anything more concrete? This is more speculative. "Think" denotes something believed to be, not proven to be. Not saying it does or doesn't. Just want some good, relevant evidence.
THE KONASSURE
Well-Known Member
I do see some plants will raise there leaves to cool off and get more airflow during the day some may drop just before it gets dark to lock in some humidity for the night, or to set up to capture morning dew, maybe its to avoid light damage in the morning you know form water drops that collect on the leaves at night allows them to drip off before the plants rise up again to grab some sun the next day
Got a pepper plant outside acting very funny it seems more happy at night and the leaves seem to be drooping more during the day, I`m not sure if its missing the airflow of being half way down the garden, I keep telling them to leave it where it was but they keep saying "it`ll get too cold that far down the garden".... but the chilli plant there looks happy still
Olive Drab Green
Well-Known Member
The dew idea would seemingly coincide with what RM3 said to look up (midday depression, specifically its preceding event) and makes sense.
THE KONASSURE
Well-Known Member
You know what the pepper plant would be much closer to the outside light and light coming from the glass door in out kitchen maybe it`s drooping to avoid the light........ I`ll bug the pepper lover about that, lol
THE KONASSURE
Well-Known Member
can`t it be a bit of both ?
I mean if plants get wet near midday or any time past morning its probably more beneficial to them to droop to drop off the water and avoid the light, the same would go for night time better to avoid any light when wet or its dark
the the morning breeze catches them and they dry off and once dry stand up to catch some early sun ?
of course inside we set a breeze over the canopy and keep it very dark at night so the plants have less use for this
but I do think turning your lights off during the day for 15 to 60mins, can help increase co2 and reduce temps and stress also gives a nice window if you want to water or spray them during the day
the down side is any lights that take wear when fired up or take time to warm up will be affected, so if your not hitting peak temps/light levels then you may not see a benefit from doing it bar maybe your eyesight will be better when you get older compared to going in full light gardens to water and such
Doomhammer69
Well-Known Member
I only run Fem seeds, other than my very first grow which were normal seeds, And what beauties they were. As far as I know, I have never found nanners. No seeds, now I have donated a lot of my grows. No one has said anything. But It could be possible. All my grows have been very healthy and well taken care of , @BobCajun nice info,