Your Grandpa's Weed or is UV supplementation really needed?

RM3

Well-Known Member
I think UV-C is also important, not for buildings trics but for keeping spores (especially damn PM) at bay. They use it in hospitals to filter the air.
UV radiation
What is the difference between UVA, UVB and UVC?
The three types of UV radiation are classified according to their wavelength. They differ in their biological activity and the extent to which they can penetrate the skin. The shorter the wavelength, the more harmful the UV radiation. However, shorter wavelength UV radiation is less able to penetrate the skin.

Short-wavelength UVC is the most damaging type of UV radiation. However, it is completely filtered by the atmosphere and does not reach the earth's surface.

Medium-wavelength UVB is very biologically active but cannot penetrate beyond the superficial skin layers. It is responsible for delayed tanning and burning; in addition to these short-term effects it enhances skin ageing and significantly promotes the development of skin cancer. Most solar UVB is filtered by the atmosphere.

The relatively long-wavelength UVA accounts for approximately 95 per cent of the UV radiation reaching the Earth's surface. It can penetrate into the deeper layers of the skin and is responsible for the immediate tanning effect. Furthermore, it also contributes to skin ageing and wrinkling. For a long time it was thought that UVA could not cause any lasting damage. Recent studies strongly suggest that it may also enhance the development of skin cancers.
 

Yodaweed

Well-Known Member
UV radiation
What is the difference between UVA, UVB and UVC?
The three types of UV radiation are classified according to their wavelength. They differ in their biological activity and the extent to which they can penetrate the skin. The shorter the wavelength, the more harmful the UV radiation. However, shorter wavelength UV radiation is less able to penetrate the skin.

Short-wavelength UVC is the most damaging type of UV radiation. However, it is completely filtered by the atmosphere and does not reach the earth's surface.

Medium-wavelength UVB is very biologically active but cannot penetrate beyond the superficial skin layers. It is responsible for delayed tanning and burning; in addition to these short-term effects it enhances skin ageing and significantly promotes the development of skin cancer. Most solar UVB is filtered by the atmosphere.

The relatively long-wavelength UVA accounts for approximately 95 per cent of the UV radiation reaching the Earth's surface. It can penetrate into the deeper layers of the skin and is responsible for the immediate tanning effect. Furthermore, it also contributes to skin ageing and wrinkling. For a long time it was thought that UVA could not cause any lasting damage. Recent studies strongly suggest that it may also enhance the development of skin cancers.
Yea I had my HVAC guy install a UV-C light in my ducting system so spores are killed, works great but its pricey.
 

hillbill

Well-Known Member
Summer of '69 here to, damn it. Also remember my first southern Mexican weed. I think I remember it. I still smell it in my head. Lake Chapala area of origin. Trippy but Stoney. Not had similar since. I also remember kilos with stems like jumbo pencils in them. Everything had tons of seeds that were much more explosive... Really. I've had same strains seeded and some not. Taste and high seem different, even from unseeded buds on the seeded plant. Can't say better but different.

The high grade pot back then did seem more psychedelic and at $20 a zip it better! But there really was a lot of low to mid stuff around also. Smoked hashish often as it was always around and always killer, blonde and red Lebanese, Moroccan, afghan and afghan-primo.
 

SSGrower

Well-Known Member
Have you ever measured the actual radiated energy of your setup? A photo radiometer can be rented for about 50 bucks a day, this will break out uva, b, and c, ir, and total energy but won't do spectral analysis. Haven't found a spectra photo radiometer for rent or for sale <$4k.
Are there any brick and mortar stores that carry agromax in co? I'm not looking for an endorsement I just would prefer not ordering online. Plus if you really want to have fun just start talking about using t5 or led for anything but veg and watch the employee's head explode!!!
 

RM3

Well-Known Member
Have you ever measured the actual radiated energy of your setup? A photo radiometer can be rented for about 50 bucks a day, this will break out uva, b, and c, ir, and total energy but won't do spectral analysis. Haven't found a spectra photo radiometer for rent or for sale <$4k.
Are there any brick and mortar stores that carry agromax in co? I'm not looking for an endorsement I just would prefer not ordering online. Plus if you really want to have fun just start talking about using t5 or led for anything but veg and watch the employee's head explode!!!
No

Got em here, in Commerce City

http://www.htgsupply.com/locations/store-commercecity
 

SSGrower

Well-Known Member
That's kind of what I was trying to get at, they're like their own little meter. If I do rent one I'll try to post unbiased results. I'm also interested in how powering the lamps makes a difference, it must based on the physics at play, like with cobs.
 

Rob Roy

Well-Known Member
They say that today's weed is not your Fathers weed, well it's not your Grandpa's either. As an old Hippie that came of age in the early 70's (and who is now a Grandpa) I smoked your Grandpa's weed and it is what I breed and grow. Complex euphoric highs that have no ceiling and last a good while (what we stoners refer to as having legs).

I've gotten in trouble here before for saying things that make it seem like I'm boasting or bragging when I was actually just tryin to share some info. It was suggested I let others speak about it, so I'm gonna add a few quotes from others but only to make a point as this is gonna be long 8)

RMM said,

"My Green Crack is like a shiny sports-car.
It hauls ass, will get you there, but Rids smoke is like a slow creeping tank that will drive right over the top of that shiny car and crush it with old school steel!"

Miyagi said,

"First, with all respect and honesty and not in the least a criticism... Riddleme's buds are NOT magical, mystical things that are better than anything you have ever come across. They are AS good or damn close to the best weed that people who remember the best weed have ever had though and for a lot of people who haven't had truly good pot it would blow away everything they know about weed."

@Afgan King said,

"got to meet the legend @RM3 today over at @ttystikk and gonna follow his advice in breeding cause after smoking his strain today all I can say is humbling. Had a whole different type of high I smoke an average of quarter pound week and I smoke a lil Pinner joint between 3 other people and damn."

Why am I posting this? Well it was prompted by this thread about UV ,
https://www.rollitup.org/t/adding-uvb-spectrum-to-cobs-opinions-on-this-setup.919962/

Seems there are a lot of believers and non-believers, like all of the cannabis related topics. So I wanted to share for the community what I have learned from my experiments over many years and as always propose that you, the reader, do experiments for yourself to reach your own conclusions.

The first thing I will point out/suggest is that if you are one that likes/enjoys couch lock highs then don't do it ! Nothing I grow has any couch lock effect and I have grown many Land Race Indicas.

I set up my T5 tanning booth so I could mix and match various different bulbs with different spectrums at different ratio's and from doing this for many years I have learned several things ,,,,

It is a Deep Blue spectrum (think 10,000K finisher bulbs) that grow more trics, they DO NOT increase potency.

UVA (think Actinic bulbs) Does increase potency but not as much as if UVB is also present.

There are few bulbs available that actually get er done as far as UVB is concerned for our needs if we intend to duplicate the levels from the sun indoors.

In order to get the most from UV supplementation Sulfur is required and best used in the form of Sulfates !!!

I use Potassium Sulfate and Magnesium Sulfate

"Mel Frank offers this micronutrient formula for high cannabinoid production: Fe-sulfate (5 mg/gal), Cu-sulfate (0.2 mg/gal), Mn-sulfate (2 mg/gal), Zn-sulfate (0.2 mg/gal), Boric acid (2 mg/gal), Molybdenic acid (0.1 mg/gal). Use 1 tspn/gal of nutrient solution, once monthly."

I have yet to use this but do intend to further experiment with several other sulfates in the future.

Yet another aspect of this that is disregarded is that seeded weed under UV light is more potent, Yes, I know there will be nay-sayers. but all you gotta do to see for self is grow 2 clones side by side and only pollinate one lower branch on one to see I'm right. As a breeder I always smoke seeded weed 8)

I've been doing this for years and because I breed I use UV light in all stages of growing. There is not a lot of documented research regarding UV light and Cannabis but please allow me to share the links I have found that are at least useful ,,,,,,,

https://smartgrowtechnologies.com/wp-content/uploads/2015/09/UVB-RADIATION.pdf

https://smartgrowtechnologies.com/list-of-uv-b-radiation-effects-on-cannabinoids-thc-studies/

http://www.solacure.com/plants.html

http://www.solacure.com/horticulture.html

http://www.internationalhempassociation.org/jiha/iha01201.html

http://www.amjbot.org/content/91/6/966.full

http://www.ukcia.org/research/opticsandthc.pdf

http://marijuana-optics.greatnow.com/

http://www.ukcia.org/research/opticsandthc.pdf


I'm curious to learn more about your experiences with seeded weed being more potent. What do you attribute it to ?

Also, the non couch locking indicas, could you offer some more details on how that's accomplished ?
 

714steadyeddie

Well-Known Member
They say that today's weed is not your Fathers weed, well it's not your Grandpa's either. As an old Hippie that came of age in the early 70's (and who is now a Grandpa) I smoked your Grandpa's weed and it is what I breed and grow. Complex euphoric highs that have no ceiling and last a good while (what we stoners refer to as having legs).

I've gotten in trouble here before for saying things that make it seem like I'm boasting or bragging when I was actually just tryin to share some info. It was suggested I let others speak about it, so I'm gonna add a few quotes from others but only to make a point as this is gonna be long 8)

RMM said,

"My Green Crack is like a shiny sports-car.
It hauls ass, will get you there, but Rids smoke is like a slow creeping tank that will drive right over the top of that shiny car and crush it with old school steel!"

Miyagi said,

"First, with all respect and honesty and not in the least a criticism... Riddleme's buds are NOT magical, mystical things that are better than anything you have ever come across. They are AS good or damn close to the best weed that people who remember the best weed have ever had though and for a lot of people who haven't had truly good pot it would blow away everything they know about weed."

@Afgan King said,

"got to meet the legend @RM3 today over at @ttystikk and gonna follow his advice in breeding cause after smoking his strain today all I can say is humbling. Had a whole different type of high I smoke an average of quarter pound week and I smoke a lil Pinner joint between 3 other people and damn."

Why am I posting this? Well it was prompted by this thread about UV ,
https://www.rollitup.org/t/adding-uvb-spectrum-to-cobs-opinions-on-this-setup.919962/

Seems there are a lot of believers and non-believers, like all of the cannabis related topics. So I wanted to share for the community what I have learned from my experiments over many years and as always propose that you, the reader, do experiments for yourself to reach your own conclusions.

The first thing I will point out/suggest is that if you are one that likes/enjoys couch lock highs then don't do it ! Nothing I grow has any couch lock effect and I have grown many Land Race Indicas.

I set up my T5 tanning booth so I could mix and match various different bulbs with different spectrums at different ratio's and from doing this for many years I have learned several things ,,,,

It is a Deep Blue spectrum (think 10,000K finisher bulbs) that grow more trics, they DO NOT increase potency.

UVA (think Actinic bulbs) Does increase potency but not as much as if UVB is also present.

There are few bulbs available that actually get er done as far as UVB is concerned for our needs if we intend to duplicate the levels from the sun indoors.

In order to get the most from UV supplementation Sulfur is required and best used in the form of Sulfates !!!

I use Potassium Sulfate and Magnesium Sulfate

"Mel Frank offers this micronutrient formula for high cannabinoid production: Fe-sulfate (5 mg/gal), Cu-sulfate (0.2 mg/gal), Mn-sulfate (2 mg/gal), Zn-sulfate (0.2 mg/gal), Boric acid (2 mg/gal), Molybdenic acid (0.1 mg/gal). Use 1 tspn/gal of nutrient solution, once monthly."

I have yet to use this but do intend to further experiment with several other sulfates in the future.

Yet another aspect of this that is disregarded is that seeded weed under UV light is more potent, Yes, I know there will be nay-sayers. but all you gotta do to see for self is grow 2 clones side by side and only pollinate one lower branch on one to see I'm right. As a breeder I always smoke seeded weed 8)

I've been doing this for years and because I breed I use UV light in all stages of growing. There is not a lot of documented research regarding UV light and Cannabis but please allow me to share the links I have found that are at least useful ,,,,,,,

https://smartgrowtechnologies.com/wp-content/uploads/2015/09/UVB-RADIATION.pdf

https://smartgrowtechnologies.com/list-of-uv-b-radiation-effects-on-cannabinoids-thc-studies/

http://www.solacure.com/plants.html

http://www.solacure.com/horticulture.html

http://www.internationalhempassociation.org/jiha/iha01201.html

http://www.amjbot.org/content/91/6/966.full

http://www.ukcia.org/research/opticsandthc.pdf

http://marijuana-optics.greatnow.com/

http://www.ukcia.org/research/opticsandthc.pdf

About time you leave us another Gem, great stuff as always
 

RM3

Well-Known Member
I'm curious to learn more about your experiences with seeded weed being more potent. What do you attribute it to ?

Also, the non couch locking indicas, could you offer some more details on how that's accomplished ?
My research indicates that there are cannabinoids found in seeded plants that are not found in unseeded plants so there could be an extended entourage effect ? It could also be that the plant gets more serious about protecting the seeds from the UV rays ? There is not a lot of research on this yet but those would be my best guesses as to why it happens.

As for no couch lock, I grow very differently, use a different spectrum, with different lights, different light timings, a sulfur rich medium. I have always (in my thoughts) attributed couch lock to hps lights and 12/12 timing ? But I honestly don't know if it one or combination of all? I actually wanted a couch lock strain for sleep but none I've ever grown have had it and I'm not changin how I grow cause I loves the Grandpa weed 8)
 

RM3

Well-Known Member
Finally, researchers appear to have identified the actual pathway of exactly how UVB affects THC production. While the analysis is somewhat technical, we’ll do our best to outline the results below. Ready?

UVB causes damage in plants in much the same way as it damages human skin, and plants created defenses against UVB in the form of a protein called UVR8.

UVR8 is a protein molecule which senses UV, and then “tells” plant cells to change their behavior. Exactly how UVR8 molecules sense UV was recently discovered and is pretty interesting. UVR8 is what chemists call a “dimer,” which simply means that it’s made of two structurally similar protein subunits. When UV light hits the two protein subunits in UVR8, their charge weakens and they break apart. To help visualize this, imagine rubbing two balloons against one another. The balloons will stick together because of a static charge. Now imagine the balloons get rained on. The water takes the static charge with it and the two balloons fly apart. In this example, the balloons are the two protein subunits and the rain is UV light cascading down on the plant cell. After the protein subunits break apart, they head to the cell nucleus to deliver their information.

One of these changes caused by this reaction is very important in your cannabis garden. UV stress stimulates cannabis’ production of chemicals via the phenylpropanoid pathway, specifically malonyl-CoA and phenylalanine. Why is this important? Because cannabis uses malonyl-CoA to make Olivtol, which it in turn uses to make THC. So finally the specific pathway which increases Cannabis potency when exposed to UV light is understood, and we can use this information to our advantage.
 
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