UVb an experiment

Ive just found this great thread :stoned:

Props to Oldmac and all the people that has contributed :hippy:

We have been noticing too that the lack of UVB and far red causes trics taking longer to become cloudy, although this is strain dependent (large differences for some strains, almost unnoticiable for others), and way longer to become amber (this effect is more general). Some times, trics wont become amber anyway, no matter how longer you keep the plant in flowering.

Ive been thinking a lot about this issue. I think that for recreative users, trics dont becoming amber is a great new. I believe only medical users requiring enough CBN (degradation of THC into CBN is what turns trics amber) for narcotic effect may be concerned about this. For them, adding either UVB or far red is a must to get that effect.

I believe its not a problem because it means degradatioon of THC is way slower wo UVB and/or far red. And at the end, most MJ growers are interested in THC production the most. The "problem" is just we are used to calculate harvest time by seeing the rate of trics ambering, and it seems we need new references when using light sources wo UBV or far red.

But trics taking longer to become cloudy is a problem, as it points out that THC synthesis is being slower. But we have found that this is way more strain dependent that the no ambering issue.

I want to carry some experiments about this in the near future so I chime in when I start it. Oldmac, if you think worth to talk about what to test each grower, im fully open to somewhat syncronize experiments with all the people involved.

Im trying to get some way to analyze cannabinoid's profiles in order to get more complete conclusions. I think now that we know that THC synthesis and degradation is affected by light spectrum, and which wavebands do it the most, to determine it with more accuracy: comparing the final THC content of clones growing with and wo UVB and the degradation rate of THC to CBN under same conditions.

Hi there, knna. I've read a lot of your posts on greenpinelane & GC, I believe. You're very knowledgeable about LEDs - most of it went over my head, but I picked up some good stuff from you which helped me when I was researching LEDs to purchase so thank you.

By the way everyone my eyeclops came! There will be pics of trichs! This piece of equipment is a lot of fun. It's too early to start looking for trichomes, but I'm having fun looking at spiky cystolith hairs (that I think are the cause of my itchy arms & hands) and what looks like bubbles on the surface of the leaves. I even bought the bug vacuum for extra curricular activities with the eyeclops.

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Originally Posted by knna

Ive just found this great thread :stoned:

Props to Oldmac and all the people that has contributed :hippy:

We have been noticing too that the lack of UVB and far red causes trics taking longer to become cloudy, although this is strain dependent (large differences for some strains, almost unnoticiable for others), and way longer to become amber (this effect is more general). Some times, trics wont become amber anyway, no matter how longer you keep the plant in flowering.

Ive been thinking a lot about this issue. I think that for recreative users, trics dont becoming amber is a great new. I believe only medical users requiring enough CBN (degradation of THC into CBN is what turns trics amber) for narcotic effect may be concerned about this. For them, adding either UVB or far red is a must to get that effect.

I believe its not a problem because it means degradatioon of THC is way slower wo UVB and/or far red. And at the end, most MJ growers are interested in THC production the most. The "problem" is just we are used to calculate harvest time by seeing the rate of trics ambering, and it seems we need new references when using light sources wo UBV or far red.

But trics taking longer to become cloudy is a problem, as it points out that THC synthesis is being slower. But we have found that this is way more strain dependent that the no ambering issue.

I want to carry some experiments about this in the near future so I chime in when I start it. Oldmac, if you think worth to talk about what to test each grower, im fully open to somewhat syncronize experiments with all the people involved.

Im trying to get some way to analyze cannabinoid's profiles in order to get more complete conclusions. I think now that we know that THC synthesis and degradation is affected by light spectrum, and which wavebands do it the most, to determine it with more accuracy: comparing the final THC content of clones growing with and wo UVB and the degradation rate of THC to CBN under same conditions.

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wow, that's a lot of food for thought, knna. I've always heard that plants grown without or with less UVB have less total trichomes, where plants that receive supplemental UVB have more "sugar" on them and are generally considered more potent. I wasn't as aware of a relationship between delayed THC/Cannabinoid ripening/degradation and lack of UVB, which could be an explanation of the lack of potency in buds grown without UVB. I've also heard people argue that despite UVB enhancement & plants having more trichomes, that does not necessarily make them more potent. It would be interesting to look into the details of the circumstances of the grows of the people who reported these various phenomena. Has anyone else noticed increased ripening/degradation of the active agents when in the presence of UVB? It would add another prong to the testing possibly - first, the relationship between UVB & potency, the relationship between UVB & the total amount of trichomes & third, UVB & it's effect on the rate of ripening/degradation of trichomes.

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Originally Posted by knna

I want to carry some experiments about this in the near future so I chime in when I start it. Oldmac, if you think worth to talk about what to test each grower, im fully open to somewhat syncronize experiments with all the people involved.

Im trying to get some way to analyze cannabinoid's profiles in order to get more complete conclusions. I think now that we know that THC synthesis and degradation is affected by light spectrum, and which wavebands do it the most, to determine it with more accuracy: comparing the final THC content of clones growing with and wo UVB and the degradation rate of THC to CBN under same conditions.

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Glad you stumbled on the thread knna! It's always good to have your input. This thread abt UVb use is really just an extension of light theory, and wavelenghts that effect a plant's life. Sorta goes hand in hand with LEDs the way I see it.

Would like to have you join in an experiment, the more input the better. The one experiment I really would like to see is the one Rusty started but could not finish; using UVb right from the beginning with rooted clones. It might be possible to see improvement in tric production. I have already seen the difference UVb can make in just the final 2 weeks of flowering as far as getting to cloudy then amber. Without UVb my run got cloudy slowly and never, even with an extra week+ never turned amber. The light I am using in my personal grow is based on Red Cree's and 2700k T5's, so far red is lacking.

I would love to be able to quantify THC and CBN levels, short of having a lab run samples I'm not sure how we can do it. Hell, I haven't been able to quantify how much UVb I'm using and that should be relatively easy. I'm currently looking for an inexpesive UV meter so I can put some sort of reference to it.

I look forward to anything you can add to this subject. :D

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Originally Posted by Apollonia

wow, that's a lot of food for thought, knna. I've always heard that plants grown without or with less UVB have less total trichomes, where plants that receive supplemental UVB have more "sugar" on them and are generally considered more potent. I wasn't as aware of a relationship between delayed THC/Cannabinoid ripening/degradation and lack of UVB, which could be an explanation of the lack of potency in buds grown without UVB. I've also heard people argue that despite UVB enhancement & plants having more trichomes, that does not necessarily make them more potent. It would be interesting to look into the details of the circumstances of the grows of the people who reported these various phenomena. Has anyone else noticed increased ripening/degradation of the active agents when in the presence of UVB? It would add another prong to the testing possibly - first, the relationship between UVB & potency, the relationship between UVB & the total amount of trichomes & third, UVB & it's effect on the rate of ripening/degradation of trichomes.

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Hi Apolonia,

I held the belief that using UVb would increase trichome production and increase potency. My first experiment without UVb showed no difference in tric production. That plus trying to get trichomes' on the leaves of a cancer strain I grow called "apricot" sorta proved to me that trichome production is a result of genetics as opposed to UVb use. I still believe it will increase potency as witnessed by getting to amber trics with it and not being able to without it. Tho the difference between all cloudy and 25% amber was slight as far as potency, there was some difference.

The biggest surprise I got was how thin the leaves where without UVb during flowering. With UVb use during the entire flower period, the leaves were alot fatter. I acutally lost some finished and manicured weight without UVb, and it did not come back with just 2 weeks use at finish. But keep in mind I only ran one strain, (plus tried everything on another) so my results may be of limited value. Hence, trying to recruit others to experiment.:D

BTW: I think the UVb you are using, and the time and distance is very good.
In my personal grow, I use it for 4 hrs in middle of photoperiod and the distance varies slightly.

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Originally Posted by knna

I think now that we know that THC synthesis and degradation is affected by light spectrum.

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Degradation is affected by light spectrum... This is correct.. Far Red works best for this effect..

THC synthesis.... Is more about time factors...

:thumbsup:

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Originally Posted by Dogznova

Degradation is affected by light spectrum... This is correct.. Far Red works best for this effect..

THC synthesis.... Is more about time factors...

:thumbsup:

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Aloha Dogz.

Please explain that statement in more detail.:confused:

So, us simple folk can grasp it.:stoned:

Weezard

What's up Weez....

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Originally Posted by knna

I believe only medical users requiring enough CBN (degradation of THC into CBN is what turns trics amber) for narcotic effect may be concerned about this. For them, adding either UVB or far red is a must to get that effect.

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The statement I made below was just answering to kana post...
Degradation is affected by light spectrum... This is correct.. Far Red works best for this effect..

Is this what you are talking about..:thumbsup:

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Originally Posted by Dogznova

What's up Weez....



The statement I made below was just answering to kana post...
Degradation is affected by light spectrum... This is correct.. Far Red works best for this effect..

Is this what you are talking about..:thumbsup:

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It is.

What's far-red got to do with THC degradation?
That would be completely new information.
At least, to me, and a handfull of udders.
Mebbe 'splain it to me, an' I'll tel da brudders.:cool:

Here it is, post Hallowe'en.
Salmayo's nowhere to be seen.
No astounding revealations from da Mars guy?
Da martians lef' da building?
Why not? Dey can fly.
And walk on water, or so I've read.
Maybe just can't find dere thread.;):stoned::stoned::stoned:


Drat!
Now we gotta keep muckin' about the old-fashioned way.


Provide for their needs, harvest when ready:hippy::rastasmoke:.:D


Howzit be, Nephew?
I just havin' fun wit you.
I know dat "you no make da rule"
You jus' applies 'em. Dat be :cool:.
:D
Weeze

Weez your funny.. I can't understand half of what you wrote... I guess that's the joke...

Sal's had a broken wrist and from what I understand he's not been able to type so much..

The funny thing is I just got done reading the 1st edition of the Martian Method Manuel... I think it's being sent to HT and some other people before it's released to the public.. Sal will be around soon.. I don't know if he will be in this tread or not..

My statement is based on my uncle and I using clear inc's during our Day Time as a far red source and more specifically (clear halogen inc's) for our trich production and ripping needs (turning trich's from cloudy to amber).. But none of this is realy talking about the Martian method thou.. Just far red or uvb supplemental lighting..:thumbsup: