can infrared lighting help ???

[Cranky]

http://www.homegrownbud.com/forums/attachment.php?attachmentid=594&stc=1&d=1133732455
OK after reading up abit about infrared lighting (http://www.homegrownbud.com/forums/showthread.php?t=224) here and there i find myself thinking this.

now Ive learnt that infrared light acts like a timer for the plant to distinguish the amount of dark hours the plant receives.when plants are grown outside,when its dusk/dawn time,its not the same spectrum of light given off during the day but infrared light.this tells the plant when dark period begins and ends.

so,i was thinking what if i was to replace the first and last 30 mins of 12/12 with infrared light?would it help speed things up or make for better flower production???

hmmm...just a thought.....i need to look into this alittle more but I'm gonna give it a try one day anyways;)


what do you guys think?

cranky

[CB]

havnt really done alot of research on this but correct me if I'm wrong here

when grow'n outdoors isnt it perferd to have the plant face'n so it gets most of the light in the late morning/early afternoon :shrug:

i think it should be added too and not part of 12/12

I'm gonna research this a bit more i think;)

[Treydog999]

Basicly the effect of Infrared light in a nutshell just to give a basic outline of my little post. Help keep me on track or be corrected.
1) plants have both PR and PFR naturally
2) PR is red light sensitive and PFR is infrared (IR) light sensitive
3) PR + redlight = PFR ; PFR + IR light = PR
4) when PR reaches a 'critcal amount' a 'hormone' floragen is produced and flowering begins.

Now back on topic for the light.
Well obviously turning PFR into PR is the key here and having that IR light on will definately help turn out PR numbers to hopefully increase floragen (although i dont know if having more PR generates more floragen or the plant generates a set amount of floragen after PR has reached its limit). Having that IR light on will probably help induce flowering for sure. Having it on all the time even during the day will probably help a vegging plant flower because of the fact that more PFR is becoming PR. After lights out i think having the IR light on will help because no more red light will be on until lights on in the morning so the IR light will boost the PR level up for the night then can be turned off. However can you generate more hormone with IR is my question, and does having more hormone give you greater yeild?

My opinion is use the light after lights out for a little to boost your PR but i dont know if it will help your yeild. The plants will have a better 'countdown' like a real sunset so maybe less hermies. But the catch is does having more PR give you more floragen and does having more floragen give you better buds? Because if after the PR levels are reached and sustained (if a plant can reveg then i assume the PR levels have dropped below the critcal point and more PFR is present) then the plant has already begun flowering and nothing more needs to be done. I will do more research if it turns out that floragen makes more and better buds rock on. But so far it seems the IR light may only regulate the flowering state of the plant (plant flower on or plant flower off). i guess the only way is experimentation. good luck and very intresting information. I will definately dig deeper.

side note: A possible side effect is longer strechier plants if given to much IR. PR makes plants strech. I guess if you beam em with IR at night not so much stretching because i dont know exactly how much veg growing happens during the dark cycle. Also if you get a reserve of PR will any type of negative health effects happen like hormone overloads or deficiences. although i guess this does happen in nature so probably not but it could happen in a man made environment.

[WilliamClarkeQuantrill]

The photoperiodic response is controlled by phytochrome. "Phytochrome is a blue pigment in the leaves and seeds of plants and is found in 2 forms. One form is a blue form(Pfr), which absorbs far red light, and the other is a blue-green form(Pr) that absorbs red light.The infrared part of the electromagnetic spectrum covers the range from roughly 300 GHz (1 mm) to 400 THz (750 nm). So obvously infrared is not going to stimulate either phytocrome. Far red and infrared are not the same thing, they are close to the same wavelength, but plants are very specific when it come to such things.. Infrared light will basically do nothing but make your plants hot. Far red light is beyond the spectrum that we as humans can see(400 nm-700nm), but not quite far enough to be infrared.

So at the onset of the dark period much of the phytochrome is in the Pfr form. However, Pfr is unstable and returns to phytochrome Pr in the dark. The far red light in sunrise returns the Pr to the Pfr form. Phytochrome Pfr is the active form and controls flowering and germination. It inhibits flowering of short-day plants (the long night period is required for the conversion of Pfr to Pr) and promotes flowering of long day plants."The deal with useing an incandescent at lights out is to bombard the plant with light high in far red to convert the Phytochrome730/Pfr to Phytochrome 660/Pr, reduceing the need for the long dark period that naturally converts Pfr to Pr. Pfr is what prevents flowering in cannabis.

[Cranky]

I'm with yas... was just a thought ...;)

so what light is it that tells the plant its the beginning or end of light/dark period?(Circadian rhythms)

far red or infra red?

just made sense to me that if ya introduced the same spectrum of light to the grow room as what tells the plant its times(body clock)same as out doors kinda thingy.....

aint the foggiest as to why the plants will get hot:o ...love all techy ins and outs to do with growing...even if i cant get my head round it;) always good to learn like so care to go into that one?..

thanks for the looking

cranky

[WilliamClarkeQuantrill]

Hey cranky,

Far red light(730nm) is what you want.

[Cranky]

top banana;)

just thought maybe of adding this light for X amount of time just before lights on and off...the amount of time to have it one for is also a ?????....

i'll try it one day just to see..if it dont work then at least they would have got abit of a sun tan;)

all the best

cranky

[ice#1]

i read somewhere that it ie inferred light also helps the plants from streaching as much if it shines onto the lower leaves but when i read it it was like 8 or 9 years ago and haven't seen anything about it since

[WilliamClarkeQuantrill]

Its not infared but again far red light, more specifically the ratio of red 660nm to far red 730nm. Phytochrome can measure light quality because if light contains more red than far red light (as is the case in daytime sunlight), most phytochrome will be in the Pfr form. Phytochrome mediates a variety of photomorphogenic phenomena including leaf expansion and inhibition of stem elongation. One classic example is in the shade avoidance response of shade intolerant plants. Foliage readily absorbs red light and so in the shade of another plant there is higher amounts of far red light which will drive phytochrome to the Pr form. Pr does not inhibit stem elongation which allows shaded plants to elongate and grow to reach the sunlight.

you can learn more here (http://www.public.iastate.edu/~bot.512/lectures/Photo.htm). :smokin:

[Cakes]

i plan on getting some far red lights, 660nm, because of what i heard they can do to the psychoactive properties of herb. and if i had infrared, i'd try them. red has been used to initiate spontaneous flowering in herb i think but i haven't seen any studies. the banks of 660nm LEDs didn't speed harvest any.