shift change at work. change on/off times for flower?

bigbluegoo

bigbluegoo

Active Member
hey guys I switched shifts at work and the girls are halfway through flower. Right now my lights come on a midnight and go off at noon. Can I just change the timer to light coming on at say 3pm til 3am? or should I just tough it out and keep it the same.
 
calliandra

calliandra

Well-Known Member
I agree with Kryptobud and Bugeye :bigjoint:
I switched my lights schedule from a day-lightson to a night-lightson phase because of low night temps last winter.
I just gave my girls a prolonged night (skipping the lights on of the old schedule and keeping them in the dark till lights on time of the new) to switch over, and they never even blinked once in shock, disgust or anything of that sort.
They were in early flower (3 weeks after flipping to 12/12, they had been flowering for a week).
 
qwizoking

qwizoking

Well-Known Member
problem is people get a herm and blame anything they can, with apparently a complete lack of understanding with regards to botany. or better yet, they dont get a herm but parrot nonsense theyve heard,..

Once it hits 12/12 its flowering. the hormones have built up really after about 10hrs, depending genetics. Your now just waiting for the plant to do its thing and keep growing. Once hormones have built from the flip, the 12hrs. they are then destroyed by light the following day, and another 12 the following night builds that hormone up to levels flowering requires again. Doing this succesively creates the "flower" growth..

the plant knows no "stress" flowering restarts everyday anyway ok,


There are three physiological developments that must occur in order for "flowering" to take place: firstly, the plant must pass from sexual immaturity into a sexually mature state (i.e. a transition towards flowering); secondly, the transformation of the apical meristem function from a vegetative meristem into a floral meristem or inflorescence, this is all visible once you can see sex appear on the plant.. An external stimulus is then required in order to trigger the differentiation of the meristem into a flower. This stimulus will activate mitotic cell division in the meristem, particularly on its sides where new primordia are formed. This same stimulus will also cause the meristem to follow a developmental pattern that will lead to the floral growth..


again, the plant is almost inanimate, its not thinking, the side effect if you will is a direct chemical reaction

Describing the flowering
which is essentially how all plants work rather long or short day
just...flip it.
"The signal is initiated by the production of messenger RNA (mRNA) coding a transcription factor called CONSTANS (CO). CO mRNA is produced approximately 12 hours after dawn, a cycle regulated by the plant's biological clock. [3] This mRNA is then translated into CO protein. However CO protein is stable only in light, so levels stay lowthroughout short days and are only able to peak at dusk during long days when there is still a little light. [4][5] CO protein promotes transcription of another gene called Flowering Locus T (FT). By this mechanism, CO protein may only reach levels capable of promoting FT transcription when exposed to long days. Hence, the transmission of florigen -- and thus, the induction of flowering-- relies on a comparison between the plant's perception of day/night and its own internal biological clock. [2]"







now like some others i have changed when the dark period is, through longer day length and night.. ive given days of 24/0 light during flower and days of dark, and done this many times at different weeks in flower. on hundreds of plants...

learn how plants work and myths start to fall apart ;)
 
calliandra

calliandra

Well-Known Member
qwizoking said:
problem is people get a herm and blame anything they can, with apparently a complete lack of understanding with regards to botany. or better yet, they dont get a herm but parrot nonsense theyve heard,..

Once it hits 12/12 its flowering. the hormones have built up really after about 10hrs, depending genetics. Your now just waiting for the plant to do its thing and keep growing. Once hormones have built from the flip, the 12hrs. they are then destroyed by light the following day, and another 12 the following night builds that hormone up to levels flowering requires again. Doing this succesively creates the "flower" growth..

the plant knows no "stress" flowering restarts everyday anyway ok,


There are three physiological developments that must occur in order for "flowering" to take place: firstly, the plant must pass from sexual immaturity into a sexually mature state (i.e. a transition towards flowering); secondly, the transformation of the apical meristem function from a vegetative meristem into a floral meristem or inflorescence, this is all visible once you can see sex appear on the plant.. An external stimulus is then required in order to trigger the differentiation of the meristem into a flower. This stimulus will activate mitotic cell division in the meristem, particularly on its sides where new primordia are formed. This same stimulus will also cause the meristem to follow a developmental pattern that will lead to the floral growth..


again, the plant is almost inanimate, its not thinking, the side effect if you will is a direct chemical reaction

Describing the flowering
which is essentially how all plants work rather long or short day
just...flip it.
"The signal is initiated by the production of messenger RNA (mRNA) coding a transcription factor called CONSTANS (CO). CO mRNA is produced approximately 12 hours after dawn, a cycle regulated by the plant's biological clock. [3] This mRNA is then translated into CO protein. However CO protein is stable only in light, so levels stay lowthroughout short days and are only able to peak at dusk during long days when there is still a little light. [4][5] CO protein promotes transcription of another gene called Flowering Locus T (FT). By this mechanism, CO protein may only reach levels capable of promoting FT transcription when exposed to long days. Hence, the transmission of florigen -- and thus, the induction of flowering-- relies on a comparison between the plant's perception of day/night and its own internal biological clock. [2]"







now like some others i have changed when the dark period is, through longer day length and night.. ive given days of 24/0 light during flower and days of dark, and done this many times at different weeks in flower. on hundreds of plants...

learn how plants work and myths start to fall apart ;)
Click to expand...
Fall apart on the one hand, a deeper understanding however can also explain why certain practices work, or at least what is really happening there (sometimes only the explanation is mythical ;) )

So do you know of a good starting place to get educated on what happens in the plant with light & darkness?
Cheers!
 
qwizoking

qwizoking

Well-Known Member
i only read things that start with "abstract"..
but really, botany and horticultural are huge fields of study. technically my background is in chemistry and pharmacology but ive been studying plants especially cannabis for decades. i dont know of any links i could tell you off hand, however as a general rule cannabis websites are...full of shit. if you want solid info or atleast certainly a solid grasp of the basics you can look at other plants which have been studied in depth. grab a few text books from your local book store. there is good info out there about cannabis but usually in the form of studies and academic research thats broken down into many papers online
 
skinny510

skinny510

Well-Known Member
calliandra said:
I agree with Kryptobud and Bugeye :bigjoint:
I switched my lights schedule from a day-lightson to a night-lightson phase because of low night temps last winter.
I just gave my girls a prolonged night (skipping the lights on of the old schedule and keeping them in the dark till lights on time of the new) to switch over, and they never even blinked once in shock, disgust or anything of that sort.
Click to expand...
I believe this is what Joe was suggesting and what I agreed with.

The plant's phytochromes (photoreceptors) need that daily 12 hours of darkness to continue in flowering mode. If you give them more darkness then it won't be as stressful as switching over from a long day and a short night.

If a human being didn't sleep much for one night it is not going to kill the human being. But it will add stress to the body and depending on the human can have varying levels of effect. Certain strains of cannabis can be more hardy against light "leaks".

What I am trying to say is that we should give the OP the most conservative advice since we have no idea about his strain or growing environment. While it is not the end of the world to switch photoperiods, you can still attempt the smoothest transition for the plant. I'm just agreeing with Joe Blow about a less risky path in doing so.
 
qwizoking

qwizoking

Well-Known Member
no...
:wall:

alot of experienced growers...
ah fuck it i give up.
all of these posts are not based on science
 
skinny510

skinny510

Well-Known Member
From Ed Rosenthal:

"As the days get shorter, marijuana determines when to flower based on the number of hours it receives of uninterrupted darkness. It measures the length of the dark period using the hormone phytochrome, which has two states. The hormone's inactive state, Pfr, occurs when it absorbs red spectrum of light at 666 nanometers. It also has a slight sensitivity to blue light. The hormone changes to its active form, Pr, over a period of two hours when the plant is in darkness. When the Pr flowering hormone levels remain high for a critical period of time over several days, the plant changes from vegetative growth and initiaties flowering."

"Any interruption of the dark period with light that contains the red, 660 nm spectrum returns the flowering hormone Pr back to its inactive state, Pfr. This prevents flowering."

"The number of hours of darkness plants need in order to initiate flowering differs by variety. To force flowering, lights must be turned on and off with consistent regularity, and the darkness must be uninterrupted. A consistent, uninterrupted dark period is key to good results for marijuana and other long-night flowering plants."

I do not see why this is such a big deal. The OP has to change the light schedule, go ahead and do it. I'm just trying to say that to be on the safe side it would be advisable to extend the dark period as opposed to the day period. I'm not saying it is impossible to change with an extended day period just trying to keep the risks of any adverse effects low.
 
*BUDS

*BUDS

Well-Known Member
bigbluegoo said:
hey guys I switched shifts at work and the girls are halfway through flower. Right now my lights come on a midnight and go off at noon. Can I just change the timer to light coming on at say 3pm til 3am? or should I just tough it out and keep it the same.
Click to expand...
Of course you can just skip the light period for the previous night.
 
qwizoking

qwizoking

Well-Known Member
even the passage you quoted mentioned nothing of herms or anything

"Any interruption of the dark period with light that contains the red, 660 nm spectrum returns the flowering hormone Pr back to its inactive state, Pfr.This prevents flowering."



exactly^^ read my passage it flowers every night. you maybe add a few hours of extra flowering time.
not exactly true but thats what was stated essentially

i dont care whether you go light or dark, as i said in my first post. but lets not keeping spreading myths especially in the newb section
 
skinny510

skinny510

Well-Known Member
qwizoking said:
even the passage you quoted mentioned nothing of herms or anything

"Any interruption of the dark period with light that contains the red, 660 nm spectrum returns the flowering hormone Pr back to its inactive state, Pfr.This prevents flowering."



exactly^^ read my passage it flowers every night. you maybe add a few hours of extra flowering time.
not exactly true but thats what was stated essentially

i dont care whether you go light or dark, as i said in my first post. but lets not keeping spreading myths especially in the newb section
Click to expand...
What is the myth?
 
qwizoking

qwizoking

Well-Known Member
why are you afraid of "stress" "risk of adverse "effect" "less risky path" "smoothet transition " "fragile as they are made out to be" another "stress"
seems everyone is afraid of something...
being here long enough i know its herming in any case....
 
skinny510

skinny510

Well-Known Member
qwizoking said:
why are you afraid of "stress" "risk of adverse "effect" "less risky path" "smoothet transition " "fragile as they are made out to be" another "stress"
seems everyone is afraid of something...
being here long enough i know its herming in any case....
Click to expand...
Sorry this turned out to be a big deal. I'm just following Ed on this one:

"A consistent, uninterrupted dark period is key to good results for marijuana and other long-night flowering plants."
 
qwizoking

qwizoking

Well-Known Member
ed suggested nothing of herming, i broke down his stance in my.second to last post... *reading comprehension

not that ed is not a steadfast source of accurate knowledge anyway.


and there lies the problem, and the continuation of such myths..you just follow, you just parrot without even an accurate understanding of the authors point, despite whether the point he is ACTUALLY making is true



what else do you believe from cannabis books or sites.. some popular ones are white ash and flushing, opinions on degradation and the cannabinoids, fermentation during the cure....many more

but some people stick with them
 
You must log in or register to reply here.
Top