leave it off for 24 hours not the reverse.I have just put my plants into a 12/12 light cycle. I have my light cycle running from 9am to 9pm but i want to switch it to 9pm to 9am. How should i go about switching the times without stressing my plants.
Thanks
Why would you recommend off 24 not on? Not saying your wrong just curious. I went the other way and it was ok.leave it off for 24 hours not the reverse.
I am guessing that if u left lights on for 24 hrs plant may go back to veg stage i would agree leave it off for 24 hrsWhy would you recommend off 24 not on? Not saying your wrong just curious. I went the other way and it was ok.
it's the length of daylight that the plant measures to trigger hormones not the length of darkness.Why would you recommend off 24 not on? Not saying your wrong just curious. I went the other way and it was ok.
i would say thats highly debatable because i cant think of a logical way of proving either that it measures by length of dark period or that it measures length of daylightit's the length of daylight that the plant measures to trigger hormones not the length of darkness.
One incidence of disruption won't make a difference unless it's a very unstable strain.
In Robbert A. Nelson's book "Hemp Husbandry" it says length of periods of light, not length of periods of darkness, determines when cannabis plants release flowering hormones to begin flowering.i would say thats highly debatable because i cant think of a logical way of proving either that it measures by length of dark period or that it measures length of daylight
well i like that someone at least has reasonable referance, but does it mention how he found that out or is he assuming like any of us can? because you cant just trust Robbert A. Nelson just because he wrote a book.In Robbert A. Nelson's book "Hemp Husbandry" it says length of periods of light, not length of periods of darkness, determines when cannabis plants release flowering hormones to begin flowering.
Evidently the question of length of daylight or darkness triggering flowering is only open for debate among those who do not already know the answer to the question.
That is not the only place I have read the explanation of what triggers flowering in cannabis plants. It was just the first one to come to mind. Also the same triggering mechanism is in most flowering and fruit producing plants and bushes and trees. It is not something unique to cannabis plants and for many, many decades botanists have performed scientific experiments and have determined what triggers flowering in photoperiod plants ... and cannabis is exactly the same.well i like that someone at least has reasonable referance, but does it mention how he found that out or is he assuming like any of us can? because you cant just trust Robbert A. Nelson just because he wrote a book.
im not saying he's undoubtably wrong, but rather that it dosent quite rule out that it could be the dark period.
maybe a way to find out for sure would be to take a reasonably sized set of plants that are easily stressed - not hardy at all. and give them all perfect conditions for growing. split them up into two groups and imply a scenario like the one in this thread - that their light cycle needs to be reversed.
give one group 24hrs dark period and the other 24hrs daylight and see which group has the most plant going into flowering or shows most stress by going hermie.
who knows? maybe its a combination of the both? or either?
as i said before i might want to make it clear, im not saying that anyone is wrong here. it has to be either that its by the length of daylight or by length of darkness so im not disregarding either.That is not the only place I have read the explanation of what triggers flowering in cannabis plants. It was just the first one to come to mind. Also the same triggering mechanism is in most flowering and fruit producing plants and bushes and trees. It is not something unique to cannabis plants and for many, many decades botanists have performed scientific experiments and have determined what triggers flowering in photoperiod plants ... and cannabis is exactly the same.
Did you happen to notice the definition of photoperiod? A photoperiod is the length of time that plants are exposed to light, not length of time plants are exposed to darkness, and cannabis is known to be a photoperiod plant, a plant where the length of the photoperiod, the length of light, will either keep it in a vegetative growth phase or trigger flowering hormones to begin the flowering stage of growth.
For some reason many people like or want or need to believe that cannabis plants are totally unique and that no scientifically proven facts that apply to most if not all other plants equally apply to cannabis plants. That is why so many people fall for so many fads and myths and urban legends and old hippie folklore about how to grow cannabis and what it needs. If more people had factual knowledge to rely on their results would be far, far better than they are.
As I said, the debate of is it length of light or length of darkness that triggers flowering is only open to debate among those who do not already know the answer to the question.
In 1880 Schubeler observed photoperiodism in 1885 Kjellman observed pohtoperiodism and in 1895 Bonnier observed photoperiodism. None knew if it was the period of light or dark that caused the trigger but that many years ago people were wondering about and thinking about and researching what is now being questioned by people in this thread with the very same questions.
By the early 1920' the actual mechanism was discovered and it has been researched many times by many people over the decades and to date the original findings have never been disproved.
Facts are facts and facts will remain facts no matter how many times people go back to thinking and wondering exactly like early researchers did way, way, way back in 1880 and 1885 and 1895.
Hey whatever it takes to figure something out. LOLwell that really is: cow-boy-logic!
i honestly crack myself up sometimes...
haha no not stirring things up^Exactly. Being that reducing the photoperiod to around 12 hours per day, is what triggers flowering, and that increasing the photoperiod will cause plants to go back into the vegetative state,.... I don't see what the arguement is. Common sense should tell you that it'd be less stressful to give them 24 hours of darkness, than giving them 24 hours of light. Of course, a gradual shift, would be optimum, but unnecessary, if your an impatient person, such as myself.lol
Also, not that I don't appreciate the evidence/info provided in this thread. I was just stating the obvious, and perhaps, stirring things up, just a little.