Cutting down flowering hours to reduce stretch?

[Alienwidow]

so i had a thought. Ya, ya know those ones where youre really medicated and you think of something? This happens to me often and sometimes you guys get to read about the crazy thoughts my brain cooks up.

So i was thinking, if youre sexing plants but you dont want them to stretch super tall because you want to reveg them... Could you just cut down the light from 12/12, to say 8/16, and theyll stretch less and still show in the same amount of time?

Feel free to add your thoughts on this and discuss freely.

 

[Chunky Stool]

so i had a thought. Ya, ya know those ones where youre really medicated and you think of something? This happens to me often and sometimes you guys get to read about the crazy thoughts my brain cooks up.

So i was thinking, if youre sexing plants but you dont want them to stretch super tall because you want to reveg them... Could you just cut down the light from 12/12, to say 8/16, and theyll stretch less and still show in the same amount of time?

Feel free to add your thoughts on this and discuss freely.

Why not just use cuttings? They show gender even if you don't get any root development. The plug trays I use have holes in them that work great for this purpose. Don't need a dome.
Stretch can be reduced by using mostly blue spectrums. Some LED lights are adjustable, or if you're old school, you can swap out HPS bulbs and go with MH. I prefer to run MH in veg because it makes the plants stockier -- and the bulbs are way cheaper, which doesn't hurt. I only run HPS after the stretch, up until the last couple of weeks. Then finish em off with MH.

 

[Alienwidow]

Why not just use cuttings? They show gender even if you don't get any root development. The plug trays I use have holes in them that work great for this purpose. Don't need a dome.
Stretch can be reduced by using mostly blue spectrums. Some LED lights are adjustable, or if you're old school, you can swap out HPS bulbs and go with MH. I prefer to run MH in veg because it makes the plants stockier -- and the bulbs are way cheaper, which doesn't hurt. I only run HPS after the stretch, up until the last couple of weeks. Then finish em off with MH.

Good point, ill run the one single ended light i have with mh @600w.

I wasnt gonna use cutting method cause its a seed run and im sexing. Ill take clones after sex and pound those out. Its a timeframe thing. Plus im hoping to get some monstercropping action from the reveg. And pollen from males.

 

[Alienwidow]

Bump, shorter light cycle = less vertical growth after flip? y/n?

 

[majins]

No

 

[rene112388]

To reduce stretching use a blue light spectrum, this promotes more compact growth whereas red promotes enlongation. Also utilize a negative DIF.
DIF is the difference in day and night temperature so a negative DIF means your day temperature is lower than your night temperature, this also promotes compact growth. Another mechanical control you can use is brushing the plants with your hands lightly, this will also help reduce enlongation . Being as cannabis is a photoperiod plant it needs a 12/12 cycle to flower, reducing the length means the plants mechanisms are altered and it believes it is spring and tried to produce more foliage instead of allowing the flowers to develop. Hope this helps.

 

[Olive Drab Green]

so i had a thought. Ya, ya know those ones where youre really medicated and you think of something? This happens to me often and sometimes you guys get to read about the crazy thoughts my brain cooks up.

So i was thinking, if youre sexing plants but you dont want them to stretch super tall because you want to reveg them... Could you just cut down the light from 12/12, to say 8/16, and theyll stretch less and still show in the same amount of time?

Feel free to add your thoughts on this and discuss freely.

If you cut down the light, they will stretch more. They stretch to find light, mostly during the dark period. Although it's better to flower at 11/13 or 10-14 anyway. The flowering hormone is released during the dark period, so the budding mostly takes place during the dark period as well.

 

[whitebb2727]

@torontoke can answer that.
https://www.rollitup.org/t/my-8hr-flowering-experiment.865489/

 

[torontoke]

@torontoke can answer that.
https://www.rollitup.org/t/my-8hr-flowering-experiment.865489/

Thanks for dragging me into this old argument again bud

Bump, shorter light cycle = less vertical growth after flip? y/n?

the answer to this specific question is no.
I've found the vertical and foliage growth rates to be almost identical.
I saw zero difference in a reduced gradual decrease versus just running 8 hr from flip.
I use 12:1 for veg and after 4-5 weeks the plants pre flower and it's easy to determine sex. The transition from flip is near immediate
Shortened flowering time during transition and flowering.

 

[rene112388]

Thanks for dragging me into this old argument again bud

the answer to this specific question is no.
I've found the vertical and foliage growth rates to be almost identical.
I saw zero difference in a reduced gradual decrease versus just running 8 hr from flip.
I use 12:1 for veg and after 4-5 weeks the plants pre flower and it's easy to determine sex. The transition from flip is near immediate
Shortened flowering time during transition and flowering.

Do you mean you use a 12/12 light cycle, I am having trouble processing your post. You say vertical rates and foliage to be almost identical can you elaborate? Also what was/is your light setup when you determined this?

 

[torontoke]

Do you mean you use a 12/12 light cycle, I am having trouble processing your post. You say vertical rates and foliage to be almost identical can you elaborate? Also what was/is your light setup when you determined this?

I use the gaslight routine for veg
And then 8/16 to flower

 

[rene112388]

I may know science but I am not familiar with the term gas light routine. That makes judging the accuracy of your claims difficult lol. It appears you have given me a new topic to research. Also if you would care to enlighten me id appreciate it.

 

[Olive Drab Green]

I may know science but I am not familiar with the term gas light routine. That makes judging the accuracy of your claims difficult lol. It appears you have given me a new topic to research. Also if you would care to enlighten me id appreciate it.

Gas Light Timing is used by a few people. i.e. @RM3

 

[rene112388]

Ah so I have found some info on it and see howbthat can delay flowering rhanks for the insight im definitely going to do more research on the topic. Sorry to drift off topic here

 

[Alienwidow]

If you cut down the light, they will stretch more. They stretch to find light, mostly during the dark period. Although it's better to flower at 11/13 or 10-14 anyway. The flowering hormone is released during the dark period, so the budding mostly takes place during the dark period as well.

Ok what youre saying sounds like it makes sence. So i may have been thinking the opposite of what the real case is. Maybe the more light i give in flower, say 13/11, or 14/10, would give me less stretch. Do you think that would work? Or @torontoke, still same amount of stretch?

 

[Olive Drab Green]

Ok what youre saying sounds like it makes sence. So i may have been thinking the opposite of what the real case is. Maybe the more light i give in flower, say 13/11, or 14/10, would give me less stretch. Do you think that would work? Or @torontoke, still same amount of stretch?

It's probably going to stretch either way, if you're flowering. Probably less if 12/12 or higher, but you'd get less bud, as budding primarily takes place during the dark side of the cycle.

 

[torontoke]

Ok what youre saying sounds like it makes sence. So i may have been thinking the opposite of what the real case is. Maybe the more light i give in flower, say 13/11, or 14/10, would give me less stretch. Do you think that would work? Or @torontoke, still same amount of stretch?

I'm not sure I completely understand what exactly your goals are with this.
I've never really considered any correlation between light cycle and stretch or growth.
Stretch and growth could be easily manipulated with light distances and pot sizes tho.

 

[Alienwidow]

It's probably going to stretch either way, if you're flowering. Probably less if 12/12 or higher, but you'd get less bud, as budding primarily takes place during the dark side of the cycle.

Its for a reveg anyway. For making mothers.

 

[Alienwidow]

I'm not sure I completely understand what exactly your goals are with this.
I've never really considered any correlation between light cycle and stretch or growth.
Stretch and growth could be easily manipulated with light distances and pot sizes tho.

Ive tried smaller pots. Doesnt really work. Plants look like bamboo when theyre flipped. Tall and skinny. Im trying to have the revegged plants not stretched out super bad, thats all.

 

[torontoke]

Ive tried smaller pots. Doesnt really work. Plants look like bamboo when theyre flipped. Tall and skinny. Im trying to have the revegged plants not stretched out super bad, thats all.

Look into glr
The growth is super tight node spacing. Little stretch