Live Stoner Chat Sativa's 11/13 Dark Cycle - Does anyone follow this for Sativas?

[Kaiju]

The second option mate - To see what traits it possesses and then to treat it more towards the original genotype -

However - what youve asked for the first question has sparked a theory - that pure hybrids 50/50 may be able to be trained either way depending on what you want out of them - But at this stage would only recommend on an obvious sativa phenotype from an indica dominant hybrid strain.

Ive always been told generally sativa strains if pure have a flowering period alot longer from 10-14 weeks - this could be an indication that the light cycle we are using for these strains is only prolonging the grow when really under optimal conditions it may finish alot sooner

Chester i havent actually done the experiments yet but it is something on my agenda - i was just reading alot about land race plants and how sativa and indica although the same plant (cannabis) grow in completely different climates and therefor may require completely different indoor environments

- But at this stage until ive done some first hand experience i would only change the light cycle if your hybrid is looking really sativa

If you know it is pure sativa then i would advise the 11/13 light cycle as this is a closer replication to their natural light cycle (Also with sativas where they grow naturally the light is higher in the sky, this is why they genetically stretch) It's basically just how they prefer to grow

 

[Balarama]

I agree with kaiju's thoughts.
All hybrids(I really mean all commercial strains are hybrids) tend to have different phenos which have different comfort zones regarding lightning and medium composition.
A scientific grower should research for this comfort zones with all his mother plants and grow accordingly to their needs.
It's not fair to grow let's say 100 plants from seed in the same conditions(18/6, 12/12) and say the sativa pheno was a poor one, it truly doesn't make sense. It does only for commercial growers.

I also have a feeling that the artificial selection which is being done to commercial strains is to select plants which better respond to the average growing conditions, discarding of those potential gems who tend to respond poorly to average conditions, for example the standard indoor schedules.
The market needs things to be this way and that's why noobs don't buy landrace sativa seeds but go for the easy ones.

And that's why there's almost no landrace sativa(or indica) buds being smoked, which I think is a shame.

 

[SCARHOLE]

I'm runnin 13-14 hrs light an 10-11 dark.
Its done by hand so its not to exact.
But I use inda gro lights with the 730 mn LEDs for 5 min at lights for pfr an It seems to be working.
Everything is flowering great!
Most seed I run have a good chunk of sativa in it.


Look at my strawberry auto sativa mutt..

 

[Kaiju]

nice bro - interesting to see sativa so bushy yet so tall aswell - how long left on this baby?

 

[SCARHOLE]

First run with her, but I'd bet another month or 2...

 

[low_and_slow]

Scarhole, the single smooth leaves you're getting are an indication of light pollution, i.e. irregular photo period.

Most cannabis plants only produce flowering hormones in response to 12 or more hours of darkness. They use the daylight times to collect light energy through photosynthesis, then metabolize those nutrients at night into flowering parts. This is why dietary requirements change during flowering, because you're not getting the same exposure to the photosynthetic process with the lights on.

Increasing darkness in sativas allows for strains to feel as if they are "finishing off" at the end of the growing season, prompting the final push to ripen and swell. In a land where the longest day of darkness is like 14 hours, these plants have evolved to be VERY sensitive to daylight changes otherwise they would never trigger into flowering at the equator.

I don't believe anything about phenotypic expression relative to light hours, that just doesn't seem reasonable...so many other factors at play.

 

[SCARHOLE]

I don't believe sativa vs indica will do any different with my light schedual.
But I believe the science of pfr / phytocrome setting the plants internal clock....

The crazy Sativa auto plant is just a mutant an i never seen anything like her before. Lol

And I don't think the pfr does much for AutoFlowers.
But I got a lil one that I'm hoping to streach out with 12-12

I have more sativa + Indica Photo plants that are flowering amazingly well

How Does it Work?
During Lights On Cycles: We run the Deep Red, 660nm diodes to meet an important Chlorophyll B peak absorption spectra for flowering thereby increasing flowering sites. Strategically placed diodes on 100 planes allow for even canopy coverage and excellent penetration. This is achieved without burning the canopy from high intensity diodes that are usually aimed straight down at the canopy. Diodes are asymmetrically placed to interlace light distribution patterns with the opposing Pontoon and of any adjacent fixtures similarly outfitted with Pontoons.
During Lights Off Cycles: It’s noon on a cloudless day and the sun paints the sky a bright Blue. As the sun begins to set, the Blue is gradually replaced by increasing levels of Red to Deep Red and finally to Far Red. In nature it is this Far Red 730nm wavelength that triggers the Phytochrome, or flowering response, to occur within seconds of sensing that wavelength exclusively as the sun sets over the horizon.
For an indoor garden, the light cycle for flowering may typically be set for a 12 hour on and 12 hour off cycle. With the plants going instantly into total darkness the plants will require a 2 hour relaxation period before actual flowering begins. Obviously this has never been the most efficient way of maximizing flower production and density. Reducing that indoor relaxation period, by mimicking nature, is critical to increasing fruit and flower size.
Our patented Pontoon design utilizes a built in control circuitry that senses once the 660nm diodes turn off. Once off, the 730nm diodes, powered by Lithium-ion batteries built into the Pontoon, will run the 730nm diodes only for approximately 5 minutes at which time they turn off in gradual steps decreasing the normal indoor Phytochrome switch from 2 hours to less than 10 minutes. Indoor gardeners may wish to adjust their lights on photoperiods for an extra hour or more to take advantage of the indoor plants natural photobiological response to this wavelength.
Inda-Gro | Grow Lights | Induction Lighting

 

[Kaiju]

now that the auto is flowering i would like to see how it responds to 11 on 13 off (although its an auto it could have strong photo genes)

 

[Kaiju]

I don't believe anything about phenotypic expression relative to light hours, that just doesn't seem reasonable...so many other factors at play.

I'm sorry but sativa phenotype expression will definitely have better performance under its more natural light cycle and the positioning of the sun, this is the natural environment in which they flourished.

For example - a blueberry bush (fruit bearing) has many different strains and the different strains perform better in different climates (completely different parts of the world) -

I'm saying we are forgetting this and maybe losing a lot of golden plants when selecting for best phenotypes as we aren't giving the sativa dominant phenotypes a chance to flourish

 

[low_and_slow]

There is nothing about an inside grow that will ever come close to the natural environment of a sativa, which lessens my desire to try to control it as such.