How Ultraviolet Radiation Affects Plants with Dr. Bruce Bugbee

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How Ultraviolet Radiation Affects Plants with Dr. Bruce Bugbee

Рет қаралды 63,173

Күн бұрын

The three different types of UV radiation; A, B, and C, each have unique effects on plant morphology and health. In this video, Dr Bruce Bugbee explains the helpful and often harmful effects of UV on plants in nature, the greenhouse, and in controlled environment growth chambers. www.apogeeinst...
VIDEO CONTENT
00:14 Apogee makes a couple different sensors to measure UV light.
00:40 The electromagnetic spectrum and UV wavelengths - UV-A, UV-B, and UV-C.
02:47 How much of these wavelengths are in sunlight? And how do those photons cause sunburn?
04:44 The erythemal response curve: one photon in UV-B is equal to 100 photons of UV-A.
04:58 The glass in greenhouses filters out most UV-B and UV-C wavelengths.
05:41 How does the erythemal response curve look for plants?
06:27 Some beneficial effects of UV-A.
07:09 The effects of UV-C, UV-B, and UV-A from Bruce’s research. It all depends on “dose.”
07:47 A good rule of thumb is some UV is good for people - it’s just the right amount. And some UV is good for plants - it’s just the right amount.
08:48 A more in-depth look at the sensors Apogee makes to measure UV light: UV-A (SU-200), spectroradiometer, and ePAR.
10:20 With the correct dose of UV light, there is strong potential to improve plant quality.
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Пікірлер: 213

@blackberryhillfarm941 3 жыл бұрын

Bruce is the MAN when it comes to light!

@neunliter 3 жыл бұрын

This is correct. Have you seen his video about increasing cannabis yields? Im using his data except for the fertilizer, im using liquid organic fertilizer on a living soil system but my plants are amazingly healthy and the quality is one of a kind. :D

@charlestonbrown3383 3 жыл бұрын

Hey he teaches at. University so no kidding he knows but grateful he shares, BadMF I only used em the second third of on times too much not good I used UVA

@charlestonbrown3383 3 жыл бұрын

@@neunliter what strains?

@neunliter 3 жыл бұрын

@@charlestonbrown3383 I have various varieties from Sensi Seeds. NL5Haze, Jack Herer, Super Skunk, N13 Kush, Satin Black Domina CBD and Jack Flash feminised. I also have Fat Petes Cookies Auto, Creeper Regular and Bruce Lemon Diesel, Super Mad Sky Floater and Lava freeze feminised from Super Sativa Seed Club. All plants in the same medium. All are doing fine. I have not dialed in everything but the medium seems to be decent.

@chris432t6 3 жыл бұрын

Agree. USU also deserves a toast.

@GarrettDunlapyoutub1 3 жыл бұрын

Can’t thank this man enough for his dedication to his work and for sharing it

@MrKrzys01 Жыл бұрын

I can't express how much I appreciate these lectures from Dr Bugbee. You sir, are a legend.

@ilovevideos12341 3 жыл бұрын

The cure for depression, plants and learning more about growing plants! Thank YOU!

@nate6748 9 ай бұрын

I've been running supplemental UVB + UVA (agromax pure uv) for 1.5 hours during mid day with only benefits. I've considered increasing the duration, actually. I run for 3 half-hour intervals, at 11:30, 12:30, and 1:30 from seedling til chop (sorry not timestamps) The plants look more like outdoor! more surface resin/sheen and no apparent detriment to flavor/effects

@306choicegenetics4 3 жыл бұрын

Thank you for your continued guidance and researching Bruce! Greatly appreciated.

@Ryutai7 3 жыл бұрын

Another banger from the prince of photons

@user-lr3ko1ek6u 3 жыл бұрын

Thank you, for your research and thank you for sharing it.

@AmericanAquariumInformation 3 жыл бұрын

Great talk! Followed your work for some time to understand growth in plants and coral under water. Getting the correct spectrum penatrated into the water for growth and how much. We've also done a lot of work of the benefit of the benefit of uvc for fish, plant, coral health in aquariums. The exposure is a byproduct because the uvc is contained in a chamber, which basically elimates oxidation and adds electrical charge back that oxidation takes away.

@SmedleyButler1 3 жыл бұрын

It's it true our planets UVC is "life on earth" dangerously high and increasing exponentially as Dane Wiggingtons ex Nasa contractor scientist says on the latest Geoengin eering watch video?

@ericorourke2836 2 жыл бұрын

@@SmedleyButler1 good question

@heinzhaupthaar5590 Жыл бұрын

@@SmedleyButler1 As far as I know there's no reason to be concerned, like at all. UV-C is also called vacuum-UV, or VUV in short, for a reason - it's already blocked due to absorption by a rather low amount of many gases, like air for example, and can only go far in a vacuum. So the chances that we'll ever see any substantial UV-C radiation down here without having way more severe problems to be concerned with, like no air to breathe, is pretty low if not absolut zero afaik. Might be a misunderstanding or just total nonsense. Maybe they were talking about higher altitudes or space, quite relevant for NASA stuff after all.

@resonatorneuronium5324 3 жыл бұрын

Dr Bruce I have missed you so much I wish I could see more of you on KZfaq

@cannabisresistance6757 3 жыл бұрын

Bruce is back ❤

@averagewhiteman5939 3 жыл бұрын

Unbelievable resource for this new grower. I’ve learned a ton from these videos. Thank you so much Dr. Bugbee!

@dertythegrower 3 жыл бұрын

Very much appreciate your study and research, thank you as always.

@Oheeeoh 3 жыл бұрын

The best bud is outdoor bud. Thanks for the informative video, Dr. Bugbee!

@chrisbuck7520 3 жыл бұрын

Wrong !

@rickw7903 3 жыл бұрын

Not where I live.

@dertythegrower 2 жыл бұрын

Entirely subjective.. and I have grown more than 99% of people here for sure heh.

@eQui253 3 ай бұрын

As an outdoor grower... This is objectively wrong. Sun grown sells good because it sounds good and hippies love it.. but led grown indoor weed is of a higher quality because it's clean and plants don't see much stress.

@coleman2608 Жыл бұрын

Dr. Bugbee for president. This man has taken my garden to a new level... God Bless you

@oztraliangrown8208 3 жыл бұрын

Thankyou sir... waiting for more of this ultraviolet info 👍

@raunch187 3 жыл бұрын

Same

@dimaivanov9571 2 жыл бұрын

Thank you So much For your time Dr.Bruce Bugbee I can not wait to take your class!

@spacecoyote224 3 жыл бұрын

Dr. Bruce Bugbee I want you to know I appreciate the funk out of you. I'm a fan of yours. Thank you for your work.

@ThePotGeeki Жыл бұрын

Adam Dunn Has invited Dr. Bugbee and me to compare and contrast conventional photobiology and Quantum aka Teslan photobiology on his show May 5.. I REALLY hope the Professor accepts. Dr. Bugbee will represent conventional and I will speak for/about Quantum photobiology.

@ThePotGeeki 6 ай бұрын

Bugbee didn't even respond.

@metatron6066 Ай бұрын

@danielely7437 3 жыл бұрын

Highly underrated and most knowledgeable in all things agricultural. This man is a true hero and an inspiration to many. God bless mr bugbee

@Freeze-cq1hj Ай бұрын

Thank you for the lesson, it was interesting to watch.

@Adrian-yz7oe 3 жыл бұрын

Thank you very much for sharing your knowledge with the world like this!!

@FUT-Franklin 3 жыл бұрын

His students are so lucky, I could listen to this man talk all day 🙂

@glockasauruswrex6362 3 жыл бұрын

Dr Bruce, thank you for doing these videos n sharing your knowledge 🙏. Graduate level work sir n I truly appreciate the effort. Information is the most precious commodity n you provide the clearest, most concise analysis of light I have seen. Thnx again.

@nolanmendoza43 3 жыл бұрын

you know you're god tier when you got 539 to 0 like to dislike ratio.. thanks for everything dr bugbee

@douglas9607 Жыл бұрын

Thank you, Dr. B.

@dertythegrower 3 жыл бұрын

Oh man you rock, thank you so much for covering this Bruce.

@dertythegrower 3 жыл бұрын

How ironic the crucial 'sunburn' factor begins at 4:20 eheehhe

@ZoltrixGrower 3 жыл бұрын

Very interesting Dr B. You are always dropping knowledge on us and I have learned so much from you, much appreciated!

@joseg9929 3 жыл бұрын

Very educational videos. The writing on the black board make it hard to see. If you could change the background to a blue print color it would make it easier on the eyes to take notes. Thank you sir for all the free knowledge. The more we know the more we grow.

@indegruv 3 жыл бұрын

Great presentation. I've bought your products before 👍

@silverstonecomputersystems3428 3 жыл бұрын

Has anybody been to the Afghan mountains or the equator to measure actual UV Photons, so that we can get a good idea of the Density of UV Photons that is required for healthy plant growth.

@Helkenberg 3 жыл бұрын

I am super happy that I found your youtube videos. You are an amazing presenter and I am learning a ton of new information. Super exciting times!!!

@weed_monster_grows 3 жыл бұрын

Thank you so Much I've learned so much from you. My Plants are loving everything you advised and I've increased my Plant Game 100 fold! What a deal! You are A Giant of this industry.Thank you Sir Bruce!

@daymianhayes2493 2 жыл бұрын

Aye Aaron lmao I just bought the Migro UVB light, pretty good price rn

@juansanchez4301 3 жыл бұрын

I have been looking into getting a uv light so this is perfect

@FurikuriYugi 3 жыл бұрын

Truly thank you for your time and information.

@lokasross485 3 жыл бұрын

Thank you very much for your reasearch!!

@ascendordie7427 Жыл бұрын

I hope your research leads to nutrition in food going up to its same levels as the past. ❤

@gladsheep 3 жыл бұрын

At 8:12, he meant to say: ...the incidence of vitamin D *deficiency* went up...

@briand760 3 жыл бұрын

Dr. Bruce is the man. Thank you for the generous sharing of knowledge!

@ThePotGeeki 6 ай бұрын

No mention of UV R8, the photoreceptor for UV. No mention of photoremediation of the damage from UVB with exposure to UVA.

@55tdt 2 жыл бұрын

Great video. Didnt know UV burns were actually visible on plants. Good to know how to tell when you've gone overboard.

@easygrows2699 5 ай бұрын

This Legend says Thanks for listening....no Sir, i have to thank you for your abundance of knowledge you share with us.

@travschula 3 жыл бұрын

Thank you! Bruce all mighty...and all who work in research...for life to be more fruitful... in knowledge and understanding...

@Exposetheluciferianagenda 3 жыл бұрын

Excellent presentation. Do one on infrared please

@mackplymale7634 3 жыл бұрын

He has several excellent excellent videos already. Check them out.

@Exposetheluciferianagenda 3 жыл бұрын

@@mackplymale7634 fuck it, let him make another one, more exposure lol

@mackplymale7634 3 жыл бұрын

@@Exposetheluciferianagenda , Tell him to repost the old one !

@tom33110 3 жыл бұрын

You don't tell this man what to do, you stop what you're doing and pick up a pen!

@Exposetheluciferianagenda 3 жыл бұрын

@@tom33110 uhhhhh daring, I love it

@manu_vuna 2 жыл бұрын

Thanks for all the info watching all the way from New Zealand

@jackfrost3573 11 ай бұрын

Gad...I invested in windows that have a high UV rating. I start my plants under a fluorescent light, then move them to a window that faces south. The plants don't do well in the window, and I didn't understand why. They grew well there before I got the new windows, also, when I transplanted the plants outside, they stopped growing and turned purple. Sunburn I guess....eventually they catch up but, now I know I was filtering UV...thanks.

@tomj0008 3 жыл бұрын

Thank you very much for all yr work. And helping us try to understand uv. Makes me want to get a bit of both uva/uvb separately.

@knowyuhgrow420 3 жыл бұрын

Thanks for sharing 👍🏽

@davidwebb1850 3 жыл бұрын

Thank you! I’ve been waiting for your input on this! Anyway you can analyze popular UV products on the market such as flower power, agromax, LEDs, metal halide, etc.?

@TitterGrows 3 жыл бұрын

keep ‘em coming! i learn so much with every video.

@jufeione150 3 жыл бұрын

Thanks dr. Bruce for the free knowledge

@retro80s22 3 жыл бұрын

Brilliant presentation i always enjoy them bruce just love the way light in all wave lengths have a possative or sometimes a negative on not only plants but all life forms ...great research ....

@DeanTheChosenOne 3 жыл бұрын

Thanks for the leading edge research. 😌🌎💫

@nomatterwhoknows Жыл бұрын

Beautiful! Thank you so much for this information!

@tazmaniandeity3500 3 жыл бұрын

Hello! This was a very informative video, and I appreciate the spread of your knowledge. You mentioned that in your laboratory studies at the university, you had exposed the plants to a few seconds of UVC with burn, UVB a 1, 2, and 3 hours and experienced burns. You had also mentioned that finding the correct exposure can prove to be beneficial for the plant, have you attempted exposing the plant to UVC at 1/2 - 1/8 of a second at extended periods of time. Releasing the light photons in small concentrations throughout the day. Allowing the plant to experience UVC benefits without the worry of burn?

@rickw7903 3 жыл бұрын

I think he would have said so if he had.

@tazmaniandeity3500 3 жыл бұрын

@@rickw7903 He actually referred to his university research in the video, being that the video is older i was hoping for an update on his research. Thanks for your intelligent input tho👌

@naterock5629 2 жыл бұрын

Well he said that's one of the things that he's working on in his laboratory they recently started studying the effects of UV light on plants exposure time using A,B,C Etc

@benbearkiller 3 жыл бұрын

You said a green house will protect you from UV so if I have an inclosed HID system would that render less IR and UV waves that you are finding out that may actually play a crucial role in a plants health.

@LarsLarsen77 2 жыл бұрын

Glass absorbs UV, so yes.

@thegodemperorofmankind7yea704 3 жыл бұрын

Straight up helpful knowledge Bruce, keep it up tiger, you’re doing gods work

@mutatonomine8470 3 жыл бұрын

Брюс,дай Бог Вам здоровья!)

@Perveeeert Жыл бұрын

i understand more about How Ultraviolet Radiation Affects Plants with Dr. Bruce Bugbee, thank you

@ace_798 3 жыл бұрын

Thank you so much.

@tkermi 3 жыл бұрын

4:00 🤔 I remember being taught that photon's energy increases linearly with shortening of the wavelength. So for example 280nm would only have 2x the energy of 560 nm etc. But I guess that because of the really shallow penetration of 280nm the difference in released energy / active absorption volume (only the surface layer) is much higher than the difference in actual photon energy.

@wege85 3 жыл бұрын

When I read more of this topic. I discovered that it make plants more robust, less yield and quality increases. What about fertilizer do we need to change that too to get better efficiency?

@petergoestohollywood382 3 жыл бұрын

You can pulse uv light and still get the same wanted secondary metabolites but without as much stunned growth as if you were to leave it on continuously. This way the uv can apparently penetrate further into the plant without the plant producing as much pigments at the surface which block most of the uv-radiation. Maybe cycle it at 1h on, 2 - 5h off. Don’t know about about fertiliser tho.

@anthonyromano8565 3 жыл бұрын

@@petergoestohollywood382 With Cannibis UVB is used in the last 2 weeks when all nutrients are stopped while using only water to reduce chlorophyll , to create a product that burns easily and increase potency.

@samfisher8426 3 жыл бұрын

Dr.bruce after watching your previous video's ,and howmuch informations i learned i instantly like this video before watching it ,because im sure i will get a lot of informations out of your video Thanks a lot

@olpajose4134 3 жыл бұрын

Muchas gracias por compartir esta información, espero que en un futuro cercano nos pueda orientar en las proporciones y tiempo de radiación ultra violeta para mejorar los cultivos. sería grandioso poder contar con una iluminaria que dosifique la radiación UV automáticamente. Bless.

@brettmoore3194 2 жыл бұрын

Thanks, glad I listened . 360micromol of uvb 30min a day at 2ft height for a 2×4ft footprint is what I read in a paper

@alvariuztheplug5728 3 жыл бұрын

I've heard that reptile UVB bulbs aren't that powerful, do you think we could use them in the daily basis?

@stevehillbilly5797 3 жыл бұрын

Thank you for sharing. A man with your incredible knowledge is a blessing to all Growers. Peace.

@suki4410 9 ай бұрын

I have a UV-A Lamp with 395nm wavelenght. It has only about 3 watts power, but when i put this light on the plant, i can see with my own eyes, that the plant adapts its leafs in about 5 to 10 seconds, with additional pigments! Instant sunscreen. The leafs get a litle reddish tint, in this uv light. The whole leaf. But this effect wears off, in darkness, as fast as it came. It is reproducible over and over again. I did not test it with a fresh picked leaf, and dont know, if the reddish tint comes from the leaf itself, or from the roots. Maybe a picked leaf is dead, i dont know.

@gtavtheavengergunnerlegend3340 3 жыл бұрын

Okay so... What would you recommend?... 30 minutes of a 40 watt reptile light (uva/uvb light)? 8 hours of uv light? Can you give me ANYTHING to go by? Bulb size? Hours used? Thanks

@DSW-kt1fp Жыл бұрын

Thank you sir you are so helpful

@cheebee2659 Жыл бұрын

Thank You So Much for your work and educational videos, Blessings sir, you are a Godsend!

@surronzak8154 3 жыл бұрын

Can't wait for the next vidéo and results

@rabah4306 3 жыл бұрын

Hello i have an important question did not find any good answers maybe you could help me : Is a led photon different from a sun photon ? Is that so, does it impact the plant ?

@anthonyromano8565 3 жыл бұрын

The only difference is the sun at noon on a sunny day is 2000 micromols and with lighting its not economical to go over 900 without C02 or you will wast money on power.

@iminincognito0512 Жыл бұрын

Bruce Bugbee said that "Let there be light... Uva, uvb, UVC and other waiting factors appears shining in all it's glory..

@ohmimprovement5767 Жыл бұрын

I didn't know UVa would still have photosynthesis for plantlife. Good to know, I have some UVa bars for my light.

@ssssxxxx8053 3 жыл бұрын

Thank you so much Dr. for the great talk

@mckenzieriver1292 3 жыл бұрын

Nearly 30 years ago, I could tell you that UV-B light increased cannabinol production. I’ve been waiting to watch this episode to explain HOW IT DOES THIS. What is the physiological pathway? You often use Cannabis as a test species so I had confidence that this video would explain that process. Your other videos always provided more depth, but you seem to have ignored it in this video. Please produce another video to explain it. I know there are many growers that have learned a great deal from your videos, and this topic is on their minds. Thanks for all of your work.

@EnriqueCruz-zs4zq 3 жыл бұрын

0 dislikes, he is pure class

@K_Nasty 3 жыл бұрын

My theory is you want it to be like the mid day sun, so I have mine on for the "middle" 6 hours of the 12h cycle. Its a small reptile light so its not very powerful. Ive seen uv damage plants . if that happens I'll just cut the hours down.

@jetsillinizoufan-3321 3 жыл бұрын

I'm very interested in the effects of UV-A on photosynthesis. Do those compounds created to block harmful radiation somehow change the plants ability to photosynthesize?

@brasco8721 Жыл бұрын

Thank you for all the excellent information. I'm trying to figure out how much 385nm UVA to give my plants right now if anyone has any suggestions. Thank you!

@albongo3949 6 ай бұрын

Great info on UV

@hygiverse Жыл бұрын

How do I contact Dr. Bruce or other researchers that are knowledgeable in this kind of information?

@AstraI1 7 ай бұрын

does the aerethymal curve change as the plant "creates its own sunscreen" not that i know any of this stuff just thought if its protecting it, the might be able to withstand greater amounts over time and change the amount its able absorb?

@MrScreaminglarry 3 жыл бұрын

So when planning for a commercial grow, What are some ways to get such a specific level of uv for the plants?

@buds215 5 ай бұрын

How long can you give UV-A to plants?

@johncrawford6799 Жыл бұрын

Can I put uvb lights in a greenhouse for the extra hrs of lights it needs before cutting off?

@alextsakopoulos9939 Жыл бұрын

I’m your garden talk show you said there’s no study that conclusively proves that uv light has any effect on bud production yet I’m this video you contradict that. Can you explain why

@ODB2607 2 ай бұрын

how many hours can i use UVA ( 380nm) on my plants per day ?

@amberarkel5236 Жыл бұрын

Have you seen a replication of the japanese study where they filtered the UV light through fiberopitcs and they grew exponentially

@tybudz6639 2 жыл бұрын

Thank you

@mackplymale7634 3 жыл бұрын

Dr. Bugsbee, Why can we germinate seeds in the sun in full summer but 2000 micromoles of artificial light will fry a seedling. Why is this? Is it the suns IR? You should figure this out so we can speed up the first 4 weeks of a plants starting life.

@anthonyromano8565 3 жыл бұрын

The sun doesn't shine at 2000 all day, Just at noon on a cloudless summer day.

@surronzak8154 3 жыл бұрын

When will the next video uploaded please ?

@MyWhiteee 3 жыл бұрын

Great video. Thx

@mproductionsmusik 2 жыл бұрын

Very interesting video well done! How many watts of UVA is needed to get a safe tan or produce enough vitamin D in humans?

@suleimanp Жыл бұрын

Can you use uv light in a organic grow? Because I heard the uv light kills beneficial micro.

@MattGarver 3 жыл бұрын

Nicely explained

@borishbio 2 жыл бұрын

Thanks for the video. However, your statement about a possible relationship between increased sunscreen use and vitamin D is simply not evidence based. Can you please provide sources of your information?