lighting hrs ? Experiment

[puredan]

Hi there all just a experiment im going to try if i get no > replys from this.

ive been reading some stuff on the net and it says a plant likes there 16 to 18hrs of light a day to get the most out of it in grow. This is one thing every grower knows and in flowering a plant likes 12hrs light and 12hrs dark. But im led to believe that its the 12hrs of dark that turns the plant to flower.Buy that a plant does not count the light hrs but will take up to 16 to 18hrs synthesization to help it grow in the dark cycle. so im thinking why not in the flowering cycle 16hrs of light then 12hrs of dark ?

So if any one has tryed this i would like to know how you went and if you havent what are you Thoughts thank you

[MongyMan]

Yup its the 12 hrs dark that makes them flower. Light breaks down a chemical in the plants which makes them flower. 12 hrs dark allows the levels to rise enough to allow flowering to happen. As far as running 16 on 12 off, it will interfere with the natural circadian rythm of the plants.

 

Peace MM

[puredan]

thanks for that MongyMan for the reply I hade this talk with another fellow grower (mate) and i cant help thinking of the plants in the world that have of lighting and dark for a bad example south/north pole ?

[puredan]

Hi all again I can't believe that im getting nothing on this in theory it sounds like it would work to me but but theory can be a bad thing I dont wont a loss there must be some one that has tryed this or know of some one that has tryed it ?

thanks to all that will reply

[loylty gets u nothing]

i have a saying

if its not broke dont fix it

12 12 works fine for me

im sure folks have tried it

im sure if it was a better system of growing it would be documented

personally i think it will only make harvest longer

take care

bil

[puredan]

Thanks bill for the reply im just trying to find out if it would work for the + or - of a grow the same way some one did with the 12/12 you never know but thanks any way

[MongyMan]

I have tried all kinds of different lighting ideas over the years including what you mention and came to the conclusion, stick to a 24hr clock because of the circadian rhythm. Plants out of sync with it are under stress and alot of cannabis plants can hermi under stress as just 1 negative.

 

Peace MM

[puredan]

Thanks MM thats all i wonted to know for some one thats done it

[Paladin]

There have been a few studies done on this - especially light cycles in veg. There is some small difference between 18/6 and 20/4, but that's in lab conditions. In reality, all the other variables aren't likely to be in fine tolerances - so for the average grower it doesn't make a lot of difference. Most peeps go with 24-0 to 18-6 to 12-12 for that reason.

 

Autoflowering strains will generally be more tolerant of odd light cycles than something without the ruderalis in it. You could always experiment on one of those.

 

The cannabis plant, like all plants on earth, likes a 24 hour photo-period. Equatorial Sativas use indicators other than photoperiod to initiate flowering because there isn't seasonal variation of day-length at the 0? latitude (the equator). So the 12/12 is pretty much what they're used to from the get go.

 

That said, yes, there are 24 hour periods of light and so on as you get closer to the poles. You don't find too much cannabis in the arctic circle, though Given the kind of latitude that cannabis evolved to grow in (barring some outlier varieties), it makes sense to go straight 12/12 to trigger flowering.

 

Like Billo said, though - if there was a significantly better way of doing it, everyone would be onto it by now

 

Great question, though!

[puredan]

nicely said Paladin thank you