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Growers Utilizing Cob Lights

  • Thread starter Thread starter Dan789
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Growers Utilizing Cob Lights

Dan789 86 Replies 16,006 Views
Page 2 of 5 · Replies 21–40 of 87
#23
More light intensity par at the canopy equals more photosynthesis more hormones put into growth which in return grows not only bigger but faster I think:bookworm:
 
#24
Highkev said:
More light intensity par at the canopy equals more photosynthesis more hormones put into growth which in return grows not only bigger but faster I think:bookworm:
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I think the higher levels of blue cause the plants to have less stretch and initiate flowering sooner.

With just hps. Even hortilux with 25% blue there is more stretch and more flower sites developing before initial budding.

My opinion anyway.
 
#25
JWM2 said:
In my case it’s a combo of the shortened photoperiod and using far red leds to simulate the Emerson effect. I just chopped a 60 day strain at day 51 with amber trics. Could have taken her at day 47.
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Apologies @JWM2 ! I'm realizing my reply probably came off bitchy. :sweating: Sorry! I'm just so into this new info and so i reacted to your post about its spectral aspects and it came off, well, bitchy. :speechless:
 
#26
SinCity said:
Apologies @JWM2 ! I'm realizing my reply probably came off bitchy. :sweating: Sorry! I'm just so into this new info and so i reacted to your post about its spectral aspects and it came off, well, bitchy. :speechless:
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Oh no worries. I figured you didn't mean it that way. I'm a pretty easy going guy. I was just hoping you weren't taking what I was saying as if I was disagreeing with you :-)
 
#29
JWM2 said:
Oh no worries. I figured you didn't mean it that way. I'm a pretty easy going guy. I was just hoping you weren't taking what I was saying as if I was disagreeing with you :)
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Oh good! Definitely didn't take it as you disagreeing--you were describing. Generously and informatively!
 
#31
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So my buddy sends a pic of his plant what is it bleached from light?
 
#33
MIMedGrower said:
I think the higher levels of blue cause the plants to have less stretch and initiate flowering sooner.

With just hps. Even hortilux with 25% blue there is more stretch and more flower sites developing before initial budding.

My opinion anyway.
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Love this! Did you do much reading or did you pick this up from observation? I'm a bookworm so i'm reading a bunch of research that confirms that the blue end added to the red and far-red does reduce stretch more than just red alone--and it's the combo that signals the plant to flower earlier and for less time. So i'm seeing across the literature that there needs to be a combo of wavelengths. I hadn't heard of the Emerson effect--apparently there is a secondary Emerson effect too. I KNOW NOTHING--I'M JUST READING. I LOVE THIS DISCUSSION. Apparently the far-red has to be supplemented by a shorter wave-length (blue is a shorter wave right?) because the quantum yield of photosynthesis drops at the far-red end more quickly than is optimal.

They're also saying that it's not just metabolic increases from optimal PAR that's doing such great stuff. It's that the metabolic optimization leads to fuller gene expression...ooohhh the possibilities. THANK YOU ALL FOR HAVING PATIENCE WITH ME AS I SORT THROUGH THIS. WRITING IT HELPS ME. ALL RESPONSES WELCOME!
 
#36
UncleRomulus said:
Preach it brother
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@UncleRomulus and @MIMedGrower and anybody else i can ask: since this old dog is learning new tricks, may i ask what you do not like about the LEDs? I always used HPS and metal halide but damn the right LED sounds like a big improvement. I'd very much appreciate your thoughts...
 
#38
SinCity said:
@UncleRomulus and @MIMedGrower and anybody else i can ask: since this old dog is learning new tricks, may i ask what you do not like about the LEDs? I always used HPS and metal halide but damn the right LED sounds like a big improvement. I'd very much appreciate your thoughts...
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I might be wrong but looking for a nice par value across the entire canopy evenly distributed to get maximum light intensity to the tops of each plant to maximize flower size but apparently there’s even more cause spectrum plays a roll to bid I need to read more journals and learn about that next. There’s a cool YouTube video of a guy growing lettuce under different colored lights and they all respond different. I’m gonna start there. I would post it but it’s not copying for some reason.
 
#40
Highkev said:
I might be wrong but looking for a nice par value across the entire canopy evenly distributed to get maximum light intensity to the tops of each plant to maximize flower size but apparently there’s even more cause spectrum plays a roll to bid I need to read more journals and learn about that next. There’s a cool YouTube video of a guy growing lettuce under different colored lights and they all respond different. I’m gonna start there. I would post it but it’s not copying for some reason.
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apparently, not just different species do best under differing protocols, but different cultivars want different arrangements too. it's not one size fits all. i'm attaching a paper you might find interesting--the experiment is well-designed. many experiments with cannabis are not--alot is by people who either don't know herb well enough or people who don't know research design well enough.
 

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