The far red thread

captainmorgan

captainmorgan

Well-Known Member
Rahz said:
Exactly, I should have been more clear. The far red would run all day and stay on a few minutes longer than the white. That would achieve both the Emerson effect and the phytochrome response correct?

The easiest solution would be two digital outlet timers so they could be synced up properly?
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You don't need 730 during lights on.
 
guod

guod

Well-Known Member
...and the next Level is

ZeDEDs
(Zener-enhanced Dark Emitting Diodes)
deliver 10X more Dark per Watt.

"YoYo Dyne Propulsion Systems' new family of Zener-enhanced dark-emitting diodes (ZeDEDs) features a novel junction structure and an integrated light sink to achieve a 10X boost in performance over equivalent-sized conventional darkness emitters.
While still based on the original phonic buffering junction (PB&J) which enabled YoYo Dyne to produce the world's first commercially-available DEDs in the late 1980s, the new devices employ a hybrid structure whose properties closely resemble a cross between a Zener Diode and a Peltier-effect cooler. "

http://www.edn.com/electronics-products/electronic-product-reviews/other/4439097/Zener-enhanced-Dark-Emitting-Diodes--ZeDEDs--deliver-10X-more-Dark-Flux-Watt

 
Rahz

Rahz

Well-Known Member
captainmorgan said:
You don't need 730 during lights on.
Click to expand...
"The Emerson effect is the increase in the rate of photosynthesis after chloroplasts are exposed to light of wavelength 670 nm (far red light) and 700 nm (red light). When simultaneously exposed to light of both wavelengths, the rate of photosynthesis is far higher than the sum of the red light and far red light photosynthesis rates."

I've read the Emerson effect experiments were conducted with 730nm rather than 700.

This leads me to believe the Emerson effect isn't the same as end of day treatment, and as such would be used all day for the intended effect. Further I've read it stated that the ratio of 680/730 were best in the near Sun spectrum which is 10:8. I'll do some more reading when I have some time and see if I can verify this.
 
AquariusPanta

AquariusPanta

Well-Known Member
It comes down to the distribution of pR and pFR photochromes within the leaf matter. Having the 730nm at lights out reduces the pFR that builds up after daytime light and transforms it into pR throughout the night.
 
C

churchhaze

Well-Known Member
guod said:
...and the next Level is

ZeDEDs
(Zener-enhanced Dark Emitting Diodes)
deliver 10X more Dark per Watt.

"YoYo Dyne Propulsion Systems' new family of Zener-enhanced dark-emitting diodes (ZeDEDs) features a novel junction structure and an integrated light sink to achieve a 10X boost in performance over equivalent-sized conventional darkness emitters.
While still based on the original phonic buffering junction (PB&J) which enabled YoYo Dyne to produce the world's first commercially-available DEDs in the late 1980s, the new devices employ a hybrid structure whose properties closely resemble a cross between a Zener Diode and a Peltier-effect cooler. "

http://www.edn.com/electronics-products/electronic-product-reviews/other/4439097/Zener-enhanced-Dark-Emitting-Diodes--ZeDEDs--deliver-10X-more-Dark-Flux-Watt
Click to expand...
Lol..

 
C

churchhaze

Well-Known Member
You will be sorry if you run extra 730nm during the day. It will not increase the rate of photosynthesis, but will increase the rate of stretch.

Although one thing I'm not sure about is whether running 730nm during the day after the stretch/transistion period is over will still cause stretch, and if not, would it increase the rate of flowering? This is something I might try soon.
 
Rahz

Rahz

Well-Known Member
I have noted that the Emerson effect increased stretch in leafy greens thereby creating more surface area for photosynthesis, so point taken and unsure of how it will affect cannabis in veg or flower... would like to find out at some point.
 
AquariusPanta

AquariusPanta

Well-Known Member
churchhaze said:
You will be sorry if you run extra 730nm during the day. It will not increase the rate of photosynthesis, but will increase the rate of stretch.

Although one thing I'm not sure about is whether running 730nm during the day after the stretch/transistion period is over will still cause stretch, and if not, would it increase the rate of flowering? This is something I might try soon.
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Dewww ittt!

:hump:
 
hyroot

hyroot

Well-Known Member
churchhaze said:
You will be sorry if you run extra 730nm during the day. It will not increase the rate of photosynthesis, but will increase the rate of stretch.

Although one thing I'm not sure about is whether running 730nm during the day after the stretch/transistion period is over will still cause stretch, and if not, would it increase the rate of flowering? This is something I might try soon.
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yeah it definitely promotes stretching. It also improves bud density. the start of onset flowers will begin sooner. Its will stop stretching once the stretch period is over. I already did all the IR experiments with lights on a few years ago.

one theory I have which I've seen with one panel having 730's run during lights on. You may not need 730 at lights off to run 13/11. But may require a large spike of 730. The Inda gro induction bulbs have 730. But very little. With mono 730's at lights on. May work to that idea. Or even the amount CMH put out could work too.
 
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C

churchhaze

Well-Known Member
hyroot said:
yeah it definitely promotes stretching. It also improves bud density. the start of onset flowers will begin sooner. Its will stop stretching once the stretch period is over. I already did all the IR experiments with lights on a few years ago.

one theory I have which I've seen with one panel having 730's run during lights on. You may not need 730 at lights off to run 13/11. But may require a large spike of 730. The Inda gro induction bulbs have 730. But very little. With mono 730's at lights on. May work to that idea. Or even the amount CMH put out could work too.
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Will it still improve bud density if you add the 730nm during lights on, only after the stretch has finished? Or is it too late by then?

With 3 tents, and 2x 730nm lamps in only a few seasons, I've only tried a few things. I'm trying one without any far-red at all, and I'm wondering if I should put my new freed up 730nm on that during the day now that the stretch is just about finished. I'm not exactly sure what to exact if I try that.
 
Positivity

Positivity

Well-Known Member
The far red ratio at lights on could be better, i think. Flowering isn't slow, but its not as fast as the 730nm exposure. I'll probably try a small touch of choice far red always on at lights on sometime soon..

Cmh is a great example of a fast flowering light that probably wouldnt benefit much from a 730nm "sunset". Although i've never used one so i'm not sure how accurate that is
 
hyroot

hyroot

Well-Known Member
churchhaze said:
Will it still improve bud density if you add the 730nm during lights on, only after the stretch has finished? Or is it too late by then?

With 3 tents, and 2x 730nm lamps in only a few seasons, I've only tried a few things. I'm trying one without any far-red at all, and I'm wondering if I should put my new freed up 730nm on that during the day now that the stretch is just about finished. I'm not exactly sure what to exact if I try that.
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I think it will still improve density. If I remember correctly. I tried 730 and 760 at different times. Addng at just the end. Adding in the middle. Running the whole time. Etc...
 
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