Will swithing to 10/14 save money and speed flower?

[Mr Stinkweed]

One way or the other I find the topic pretty interesting.
Im not sure how we find that 12-12 is optimal.

I live at about 45degrees north.

I just looked at my sunrise sunset table and its not until 25 september that we hit 12 12 that is. sunrise at 7:34 and sunset at 19:34

but there is at least 1/2 hour before sunrise and after 1/2 hour after sunset where its light. certainly not dark.

I suspect 12 hours is the least light your plants should get.

That date. sept 25 is about 2 weeks from our average frost date.

so clearly the plants should be done here pretty much by our 12-12 date.

It seems to me that 13 -11 probably closer matches the optimum flowering period than does 12-12 at least according to mother nature.

and who argues with mother nature???

I should of course point out.... that pure sativas dont grow so hot around here...

but most strains have enough indica in them to flower with more than 12 hours darkness....

 

[Crippler]

to the guys who have tried something other than 12/12 what kind of timer did you use for your lights?

Some friends of mine wanted to do some experimenting with a 6hr On / 12 hr off cycle but couldn't find a timer to do something like this.

We ended up having to manually adjust a computer controlled timer since it was easiest to keep adjusting.

 

[bounty29]

I got a digital timer for like $20 that you can do the 6:40/12 if you want, you can add more settings to it than you'll ever need. Just a standard intermatic digital timer.

 

[007grow]

http://www.unodc.org/unodc/en/data-and-analysis/bulletin/bulletin_1978-01-01_1_page008.html

Read it. Retain it. Don't give advice on things you don't know.

LOL thats the study I was talking about earlier good post man!

 

[Weedman Herb]

10/14 doesn't speed anything ... neither does 11/13 ... You need to dramatically increase the frequency of the 12 hour night period if you want to achieve noticable results ... If you want the formula to a faster (avg 1/3 faster, strain depending) fully ripened, yet lighter harvest I will enlighten you ... first ... Open Your Minds ...

 

[bounty29]

10/14 your day still takes 24 hours. If you're interested in this kind of thing, regardless of what the studies say, you should look into the 6:40 on/12 off schedule. That will get you a faster harvest. The best thread I've seen on it was at the AN forums, and those are history so I'm not sure where you can go.

 

[Weedman Herb]

Yep ... That's the ticket ... I dunno about the :40 thing but I was forced to run a fast cycle and did the 6 on 12 off thing ... I shaved a 60-65 day BMR run down to 47. You can't pump them up on nutes either for you hydro maniacs ... 6 hours barely gets the proteins cooking and the phyll flowing ...

 

[bounty29]

6:40/12 works so that you can set a 7 day digital timer once and it is good to go for as long as you want, it ends up being 9 cycles in 7 days. Got a 90 day strain? Finish it in 70! Don't think you'll yield the same though.

 

[clowntown]

 

[medical_shed]

I did it once with some hybrids and didn't notice lowered potency but definitely noticed lower yield.

 

[Treetops]

Ole Homegrown Quarterly, February 1980..



I have had great results with 10/14...



Hawaiian Snow....

Peace,
Treetops

 

[Bigtimer7]

Mad props!!

Glad the thread picked up.. Now we are talkin bout some intresting stuff...

I like it! Keep it flowin

 

[Skrappie]

http://www.unodc.org/unodc/en/data-and-analysis/bulletin/bulletin_1978-01-01_1_page008.html

Read it. Retain it. Don't give advice on things you don't know.

Bibliography

Fairbairn, J.W., and J.A. Liebmann. The extraction and estimation of the cannabinoids in Cannabis sativa L. and its products. J. Pharm. Pharmacol., 25, 150, 1973.

Kimura, M., and K. Okamoto. Distribution of tetrahydrocannabinolic acid in fresh wild cannabis. Experientia, 26, 819, 1970.

Lerner, M., and M.D. Katsiaficas. Analytical separation of mixtures of hallucinogenic drugs. Bulletin on Narcotics, XXI:1, 47-51, 1969.

Valio, I.F.M., and J.R. Valle. Influence of photoperiod on flowering of Cannabis sativa. Ciência e Cultura (São Paulo), 25, 533, 1973.



wouldn't most of us agree that the 70's was not the best time for cannabis research.

The fact that it says plants in the 14 hour photo period did not produce viable flowers screams about the viability of the research. I'm not saying research didn't happen. What were their samples? the other point of cannnabis grown with the extra two hours (from 10 to 12) DOUBLES the potency. I think any grower who has actually experimented with photo periods, and smoked their own product with disagree. i did 14/10 this round with clones, and everything smokes about exactly the same as it did last round. Disappointingly so.

don't get me wrong, once again, it is a scientific study.. or more a few of them condensed at anyrate, i may not know what im talking about I don't have any fancy equipment, I've just done the footwork.

Bounty lets hear about your personal experience with photoperiod manipulation. I like hearing from people who have actually tried it, and report something different then what I have. (same pot, different month)

 

[Haps]

Bounty is completely right here folks, stop wasting your time. OR. Go ahead and show us with a side by side. It is not a logical equation that less will give good results, it will give less results in one way or another. It ain't flippin magic, it is nature, all things obey their own nature.
H

 

[Mr Stinkweed]

The fact that it says plants in the 14 hour photo period did not produce viable flowers screams about the viability of the research. I'm not saying research didn't happen.


Im not sure how this screams anything.

Ive use 14 hours to start flowering.


but if they use pure sativas as they say they do... this result would be expected.

 

[dongle69]

The study was done with hemp, not sensimilla.
Huge difference.

 

[Mr Stinkweed]

Im a little older than you are.

but I well know that hemp is a common name for cannabis.

hemp has lowered thc ... and well below what these plants show.

but I have a question.

wouldnt it be a contradiction in terms to use seeds from a sinsimilla plant???

 

[Mr Stinkweed]

dongle69
Pushin' 40

 

[bounty29]

Skrappie - If you had done any extra reading about studies done in the 70s, before making your odd conclusion, you would have found the govt. had studies done to show how bad it was, and that's when they first found it effective in treating cancer cells, which quickly put an end to their studies. You can find that one yourself though.

dongle69 - Weed = hemp = weed... and if you take male weed/hemp out before they can spread pollen all the female weed/hemp is then sensimilla.

From Spanish sin semilla, (seedless).

Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Urticales
Family: Cannabaceae
Genus: Cannabis
Species: C. sativa

Be it pot, weed, ganja, sinsemilla, or dank, if you grow them side by side and change a single variable, you will get solid results. The problem with so many of the "side by sides" is they aren't done in a scientific fashion, and there are multiple things that are changed, so you can't really attribute changes to just one thing.

A test on Big Bud or Chronic or something would have THC numbers a third of some other strains, but that doesn't mean the effect won't scale. Maybe it will, who knows? Try it out and get a gas chromatography test done. Saying "I feel as high as I did last time." Isn't what I'd call hard proof.

 

[Skrappie]

I'd still like to know, from your personal experience. I know what you believe, and read good sir. I like to know what you have seen. I'm not calling you wrong. I'm asking for something diffrent then what you are providing

Skrappie - If you had done any extra reading about studies done in the 70s, before making your odd conclusion, you would have found the govt. had studies done to show how bad it was, and that's when they first found it effective in treating cancer cells, which quickly put an end to their studies. You can find that one yourself though.

which is my point, I would not call that valid research?
throwing another card into the hat I doubt you read the actual studies themselves


Look, I'm not trying to argue on the internet to the point it disinagrates into anything other then seeking knowledge.
All that I am asking you directly bounty is if you have seen for your self the effect of floweing in 12/12 10/12 and 14/10 If not then our communication is basically over until our interests cross paths again. If so, then tell me what you've SEEN not what you read from what someone else read to condense into a pseudostudy.


By all means This is not some sort of attack, I think you are a fantastic grower,
I just know my plants did not double potency from 10/14 to 12/12. I'm not saying yield was not effected or etc etc. But as a smoker and a grower I think I can say without a gas chromatography test
Pot A tastes and smokes the same way it did last time, hmmm lets smoke some from last time, yup, their the same.