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  1. #1
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    What does all this mean to your cannabis garden? Ultra-violet radiation, particularly UVB, has been shown to be detrimental to plant cell function. UV causes damage to plant cells in the same way it tears through your skin, eventually causing sunburn. As a result of this damage, all plants have created defenses against UV in the form of gene UVR8. We need to investigate how UV light affects plants cells?

  2. #2
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    Thanks martinej.

    Always a pleasure to read your posts.

    Peace,

    DSF.

  3. #3

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    I sure wish he would post his posts here as I dont like using external links personally
    this place could have been cool - now its just another revenue stream - peace out!


  4. #4
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    Origanally posted by martinej.


    What if I told you that increasing the potency of your favorite strains was as easy as hanging up a few 20 watt florescent lights? To good to be true? More like too true not to do. It turns out the same thing baking your skin at the beach can make prized buds swell with THC. Ultra-violet (UV) light has the power to turn a good strain into a real head-knocker.

    What Is UV Light?


    At this point you might be asking, "how is UV light different from normal light?" Even though humans can't see it, a good way to think of UV is to visualize a rainbow and pretend there is an extra color band past the blue and purple. All light is basically just waves of energy, and UV light is just like any other form of radiation. These waves wash over your plants at different frequencies (how many waves pass per second). UV light has a smaller gap between each wave than visible light, which means more waves are passing per second. This gives UV high energy, making it more like an X-ray than a radio wave.

    How Does UV Light Effect Marijuana Plants?


    But what does all this mean to your cannabis garden? To answer that, we need to investigate how UV light affects plants cells. Ultra-violet radiation, particularly UVB, has been shown to be detrimental to plant cell function. UV causes damage to plant cells in the same way it tears through your skin, eventually causing sunburn. As a result of this damage, all plants have created defenses against UV in the form of gene UVR8.
    UVR8 is a protein molecule which senses UV all by itself, 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 just 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.

    More UV Can Mean More THC



    One of these changes caused by this information 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? It's important because cannabis uses malonyl-CoA to make Olivtol, which it in turn uses to make THC. Now we can see the specific pathway which cannabis uses to increase potency when exposed to UV light.
    UV light is already present in your garden, but it's being blocked by the special glass your bulb is made of. Lamp manufacturers must use this type of glass by law because UV light can cause skin cancer when humans are overexposed. You wouldn't want everyone getting cancer from street lights would you? You can increase the amount of UV getting to your cannabis by mixing metal halide bulbs into your bloom room and leaving the glass off your air-cooled hoods. But a better and safer way is to buy and install cheap fluorescent UV lights.


    Remember, UV light causes stress to the plant, so put the fluorescents on timers and only have them on for part of the light cycle. Having them on for fifteen minutes of every hour should do the trick. The only downside of this whole process is that yields go down slightly. The plant has to reroute resources and undergoes some physical damage from the UV. As long as you don't overdo the UV the increase in quality is well worth the decrease in yield.
    Safety Note: Never go into your room during UV exposure times, unless you manually turn the lights off! Overexposure to ultra-violet radiation can cause skin cancer in humans.

    : Source

  5. #5
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    Or you could just wear sunblock.


    How potent do we really need our plants to be? Start with good genetics and you don't need all this extra lighting. I mean really, All the plants I have grown were damn near all one hit wonders. 2 hits and I quit most usually and I've been smoking for over 20 years..

    Not that it isn't good info and good to read, but damn, is it really necessary?

    My love of cannabis goes beyond the high, it's also the tastes and smells.. I find it hard to even enjoy smoking all these heavy hitting strains because if I smoke more than 2 hits I get overly high (I'm panic attack prone). I'd actually enjoy a lower THC content bud with a good flavor so I could actually smoke a whole joint and still be able to function.

    Of course everyone is different and this is all my .02 I've seen some guys smoke ungodly amounts of shit that I wouldn't consider even taking 3 hits of..

  6. #6
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    So many aliments, genetics, methods, goals, experience, testing, ways to go at this plant, but the wants and needs are very diverse my man. To each of his own, but as long as your reaching for a joint and not a pill. Funk off or on just funk
    Quote Originally Posted by NdNOutlaw View Post
    Or you could just wear sunblock.


    How potent do we really need our plants to be? Start with good genetics and you don't need all this extra lighting. I mean really, All the plants I have grown were damn near all one hit wonders. 2 hits and I quit most usually and I've been smoking for over 20 years..

    Not that it isn't good info and good to read, but damn, is it really necessary?

    My love of cannabis goes beyond the high, it's also the tastes and smells.. I find it hard to even enjoy smoking all these heavy hitting strains because if I smoke more than 2 hits I get overly high (I'm panic attack prone). I'd actually enjoy a lower THC content bud with a good flavor so I could actually smoke a whole joint and still be able to function.

    Of course everyone is different and this is all my .02 I've seen some guys smoke ungodly amounts of shit that I wouldn't consider even taking 3 hits of..
    Funk Monk

  7. #7
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    I myself look for the length of the stone, rather than the hit.
    As with my condition sleep is rarely available to me,
    hence I look for high sustainability when toking.

    Peace,

    DSF.

  8. #8

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    There are studies that indicate that UV rays do have positive effects on trichome production and potency.

  9. #9

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    Plants do need SOME uv light. Even we need SMALL amounts for natural vitamin D production. But it seems to be human nature to 'over do' a good thing. CFL's give off more uvb light than any other type of fluorescent, but it doesn't 'over produce' to the point of harming the plant. Apparently its just the right amount. Look how well plants do under them. (Or over them, as I use them for underlighting & side lighting).
    -- Of course you CAN get special flourescents made for high uv output, but I am refering to household use fluorescents, & cfl's emit a bit more than most, but still at safe levels because they are ment for human use. UV isn't high enough to sacrifice bud size over potency/resin production, so a few cfl's in the grow room is a good thing!
    Last edited by catbuds; 12-13-2013 at 12:52 AM.

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