Lengthen flower period??
- Thread starter bignugs68
- Start date
amneziaHaze
Well-Known Member
There is some reaserch that playwd with flower time 14h to 10h light and they got some poaitive results after doing some combinations.
If i remember right total amount of light was the same as if you did 12/12 whole grow but it gave better results.i think they started with 14h and ended with 10.
If i remember right total amount of light was the same as if you did 12/12 whole grow but it gave better results.i think they started with 14h and ended with 10.
MickFoster
Well-Known Member
No and no.
Haha I had to ask! Thanks for the responses!
calvin.m16
Well-Known Member
Yesss. I achieved great results with using the Growers Choice booster to ramp my lights to 720w but I reduced from 12/12 to 10/14 the last week before harvest. This hasn't improved yields, but it definitely steers the plant to finish ripening. Look into DLI there are many things you can play around with. Different genetics will all respond differently too. The safest bet is 100% power 12/12 schedule beginning to end.
No. Bugbee was asked this in a recent interview. There's no basis in plant biology to do that and, as he is wont to say, "we don't have any research that supports that."
Light is food to a plant so when you reduce light levels, your plant is not able to make as much glucose and all processes in the plant slow down.
The graphic from growlightmeter.com — it's not evidence based. I emailed them, asking for citations, and their programmer told me that supporting research would be annotated on the page. Last I checked, there was none on their site. I've read a fair amount of research on cannabis lighting and there's nothing about gradually ramping up light in a step wise fashion like that. By fair amount, I mean I read everything I can find and have spent a few hundred hours at it since I started growing three years ago.
I run my grows, in ambient CO2, at 900-1000µmol±. Below is the light data for my current grow. In veg and early flower, I sample nine points. Once buds develop, I sample the buds (12 sites). All measurements are taken as close to the bud tip as possible using an Apogee MQ-500.
Cannabis is
Per the attached Frontiers paper, the researchers were able to grow cannabis at light levels up to 1800µmol and, as light levels increased, crop yield and quality increased. I've never been able to run much over 1050.
My light levels from today are here and another set from 3/20/24.
Today
and 3/20/24. There was no visible indication of excess light but I've hit fox tailing at > 1200 so I backed things down a bit.
Last edited:
Budzbuddha
Well-Known Member
Lengthen VEG ….
Top / Fim
Scrog
More budsites ….. more flower … DUH.
Top / Fim
Scrog
More budsites ….. more flower … DUH.
Yeah I did that bub, lol I'm asking bc my nodes are somewhat tight and I'm curious about them stretching enough for decent colas. So train of thought was longer flower period would allow more growth in general. This Wednesday will make one week into flip to 12/12, and it wasn't till just now they got about 3inches taller. I just hope she stretches a good 12-18" more. You keep your DUH
@Delps8 ppfd and ppm are two tools I haven't bought yet and growing on a budget. I did install photone but haven't spent the hrs to learn how to calibrate it for my phone. All in time. I'd love to have my stuff down to a science like that!
Tight nodes is what you want. If you don't cut back on nitrogen during stretch, for example, then it will stretch a lot, like 3-6" between nodes depending on the cultivar, but that doesn't mean you'll have 6" long nugs between nodes. It just means you'll have a set of balls (one bud on each side of the stem), a 4" stem, another set of balls, stem, until you get to the top of the plant.Yeah I did that bub, lol I'm asking bc my nodes are somewhat tight and I'm curious about them stretching enough for decent colas. So train of thought was longer flower period would allow more growth in general. This Wednesday will make one week into flip to 12/12, and it wasn't till just now they got about 3inches taller. I just hope she stretches a good 12-18" more. You keep your DUH
@Delps8 ppfd and ppm are two tools I haven't bought yet and growing on a budget. I did install photone but haven't spent the hrs to learn how to calibrate it for my phone. All in time. I'd love to have my stuff down to a science like that!
Hot Diggity Sog
Well-Known Member
I'll add my 2 cents.
In my experience, reducing light intensity on or around day 55 of flowering will reduce fox-tailing. This seems to be mostly driven by genetics but light reduction has proven effective for me.
In my experience, reducing light intensity on or around day 55 of flowering will reduce fox-tailing. This seems to be mostly driven by genetics but light reduction has proven effective for me.