Far-red: The Forgotten Photons
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- Опубликовано: 28 окт 2019
- In this video, Dr. Bruce Bugbee reviews recent research on the powerful effect of far-red photons on plant growth and development. The summary includes the evidence for the direct value of far-red photons in photosynthesis as well as their value in promoting leaf expansion rate in lettuce. The evidence indicates that we need to redefine photosynthetic photons to include wavelengths beyond 700 nm. The availability of efficient far-red emitting LEDs means that there are immediate commercial applications of this research for indoor agriculture.
VIDEO CONTENT
03:22 Far-red photons are right on the edge of visible light - 700-760 nm.
04:02 We typically break up light into three categories: blue, green, and red.
04:45 A story on Dr. Shuyang Zhen's research with four growth chambers measuring canopy photosynthesis with different lights.
06:06 The results of the study are opposite from what you would assume because of adding far-red photons.
07:53 Do white lights grow plants equally well compared to red/blue lights?
09:49 A summary of the spectral effects of different colors of light: blue photons, green photons, red photons, and far-red photons.
10:50 Bright white light is excellent for human vision to diagnose plant health to find insects, nutritional disorders, etc.
12:36 How well different colors of photons penetrate leaves.
13:33 Why did adding far-red light cause better growth in Dr. Zhen's study?
14:32 A history of the classic PAR curve from Keith McCree's research. McCree only had primitive tools to develop his curve. He had to measure each color of light separately. We have better LEDs and better tools to measure light and combinations of lights now.
15:47 A diagram of what happens with photons in the light reactions of photosynthesis.
17:53 Far-red photons all by themselves are not effective. But they work extremely well synergistically with all the other colors of photons.
18:26 There's a law that relates to photosynthesis, solar panels, and human vision: The Stark-Einstein Law. One photon excites one electron.
19:35 Is our definition of photosynthetic photons correct?
21:12 The effect of far-red happens in every plant species is the same. Far-red photons are equally valuable as the other photons.
21:53 The commercial implications.
23:03 The response of plants to shade/far-red and the effect on plant shape.
26:59 Historically, we have quantum sensors to measure PAR, but they don't measure far-red. You need an Apogee PAR-FAR sensor that separately measures PAR and far-red photons.
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I wish I could thank you all personally for your work and dedication. Thank you professor B, Shuyang Z, and Paul K for your research. It’s greatly appreciated.
Congratulations, Professor Bruce. You were my phD advisor and I see you're still brilliant as usual.
NILTON NÉLIO COMETTI @ I want to know which white LED has been used in this experiment ? Is it cool white or warm white ? Which kelvin light is best as grow light ?
This dude sciences
@@aayatwomenchildrenshospita6179 3k-4k with far reds. Some growers say the far red does not make more yields just more frost.
Nice
Aaa aaaaww qaqqq
Incredible. I was taught photobiology using the old handbook. Many thanks for the update, Bruce.
Very clear overview of the testing methodology, results and implications.
Wow some great research based presentations; this whole series is pure gold. I love that you explore each paper and their methods, such as using a single color of light at a time to study PAR and the flaws etc. Could watch these all day again again, may things I've hypothesized about are covered in these lectures.
Thank you professor Bruce.
Your research just arrives in Brazil, and I’m so grateful to learn more about !
Thank you for such an educational video. I had no previous knowledge on the subject, your clear explanations and visuals, especially your photosystem diagram made it easy to follow along.
I've watched this a few times over the past few years. To you and all contributees of accelerated plant growth, you are doing extraordinary things. Tell us how to clean our tap water next? We know, you know..😅
Got to love this science / hobby / cure / fun thing to learn and do!!!
Thank you so much for letting me understand stuff about lights and the effects of differences you are really appreciated over here!! :D
Horticulture is such a small field, I never expected to see Paul being mentioned! I was in undergrad with him
That photosystem infographic is amazing! So succinct and intuitive to understand
Thank you again for sharing your knowledge with us Dr.B!
This was a fantastic video, thank you Dr. Bruce!
Instant sub to Professor Bugbee, Thanks so much for this!
This is a great educational video! Many parts intrigue me! I'm now curious about nutrition density. Take for example the lettuce exposed w/wo far-red photons. The far-red exposure grows larger, but it may also not be as nutritious. I have read and heard of other studies on blueberries, strawberries, etc. (now versus 50 years ago) and how sizes have increased, but nutritional densities have decreased significantly (obviously some factors like over-farming, soil nutrient depletion, ultimately under fertilizing contribute - who knows...). I guess one would also have to consider a plant has a theoretical limit of growth versus time + far-red exposure - that even if more fertilizer was supplied to assumingly keep up with growing demand, there may still be some nutrient density depletion. Super interesting to ponder!
Wow. Just wow. Thank you very much for this knowledge bomb!
I think I'll have to watch this a few times
Best video yet! Love these
Thank you yet again for another Wonderful Lecture / Class ... Each and every video you've put out is greatly appreciated Sir
Love these videos. Very informative. Thank you.
Absolutely amazing research and knowledge. thanks you so much for sharing
Wow. What great research. Thank you so much for your hard work and dedication. You're brilliant, and I appreciate your life's work.
This was super amazing & insightful. Thank you Doc!
So invaluable, can't help but get excited for what is to come. 🙏 Greets from Guatemala 👍
True science is always in revision and reconsideration. Science is never settled as much as some would like it to be. Great video!
You do great explaining things and was an excellent presentation. Thank you.
You’re blowing my mind. Love it.
Thanks Dr. Bugdee. Muito obrigado!
Over my head first watch, going to watch again - very interesting .... Dude is a genius!
As said before by others it would be greatly appreciated if there could be a cheaper model for us at home growers. Not that your companies prices are outrageous but they are outta reach for most small time home growers just starting out or even the hobby growers who still want to do it right. You are the best and that's why we ask, of course we could buy from inexperienced companies who just wanna make a buck but have no quality because they wouldn't even know how to make a quality product but that's why many like myself wish you could help. Know you need to make a profit so maybe just a cellphone connection or app, or cheaper quality device but still with Dr. B's approval so all are happy. Know I should just save up but it's truly hard RN. Thank you tho as always and it's very appreciated that you took so many years learning than kind enough to share so much knowledge. The fact that you give props to everyone along the way shows great character as week. You're a great man Dr
Thank you for your work!
FANTASTIC..., Congratulations Dr. Bruce & Postdoc scientist....Brazil UFRRJ
Excellent video, thank you!
Yo that introduction of himself in the beginning of the video are straight bars !!
Superb research! Will use that in hemp research at the indoor farms.
Thank you, Sir. Just massive thanks for that knowledge. You are great.
Thank you for sharing this cutting edge information . i figure i better subscribe . I for one am extremely interested . I enjoy the way you present it as well , your very easy to follow lol thank you once again. Take care
Good job! Thanks for sharing the knowledge sir.
nice lecture. nice graphics for understanding. nice guy. great video. Thanks for your explanation.
I want to grow the best for myself. This info is invaluable. Thank you to all involved for your work.
I love this....Im hungry for more...I will be watching you for the rest of my life.....so get ready for me.
Please, Dr Bugbee, make the sensors a little cheaper as we are millions of micro growers around the world that we would love to have Apogee Par and light spectrum sensors but they are expensive. Help Apogee "lift off" (pun intended if someone knows the meaning of the word) and become the only name among growers as your instruments are scientifically calibrated and therefore give accurate results that can be used for comparisons and benchmarks. Greetings from Greece!!!!
Making very high quality, well calibrated and very accurate equipment is expensive. Especially when there isn't demand for millions of units.
@@derp195 That's pretty much what he's implying : a lower cost and lower precision tool designed to be cheaper and reserved for personal and hobby use would make the market much larger, selling millions. Doesnt detract from the high end scientific precision tools they can sell to professionals as they do now. I'm sure they could pull that off without sacrificing much in the way of usefullness for amateur growers.
@@sirzebra and aquarium guys too. Id love one. I wonder how much of these videos are applicable to aquatic plants? Especially pigment production is what im interested in, and spectrum for optimal plant growth with good forms under water , which is quite different to light through air.
@13thExit Strategy It's mainly two things. It's expensive to make very precise instrumentation, and it's expensive to produce small numbers of things.
If millions and millions of the things were being sold, the price could come down a lot because of the economy of scale.
I got u buddy. SpotOn Quantum PAR meters are now $300US. Sorry professor...
You can make a spectrometer yourself very cheap. All you need is an old DVD, webcam, a little box, and open source spectroscopy software for free online. There are you tube videos on how to make it. Very easy.
More awesome info, thanks!
If you want a hit video, make a perfect spectrum and PPFD recommendation for different ftxft areas FOR Cannabis, because there are huge online communities all debating over this topic and you have the means and evidence to give a very good answer. There are a lot of companies offering custom LED chip setups and your recommendation would definitely help a lot of people and give people a bit of courage to try it and then we could end up with a lot of free research out there.
this is the best most informative video i have seen on light.
Correction: most informative channel I've seen on light
Hey! In conclusion far-red is not good for the early stage on cannabis right?
@@tolksam1291 yes that is right. Far red is the best for flowering.
@@Trrenik0kb thanks
Thank you for sharing such wonderful content 🙂
To me personally, it's incredible how fast this knowledge from a few years ago, has already been implemented into modern grow lights, which are also getting cheaper by generation!!
Thanks to ANY proper scientist in this world ❤
Thx:) very important and intresting information on your chanel!
Damn. Learning so much over here. Thank you Dr Bugbee!
We're actually now working on supplementing our LEDs with the far red spectrum. I'd love to send you one as a gift for inspiring us to produce one.
We manufacture LEDs and we focus on lighting that is optimal for mother plants.
Can you say what is the brand name of your lights?
What a great educational video!!!
Thank you so much for this information.
thanks for making these videos
This is an extraudinay video series. Thank you.
can you come out with a video on UV light next? "The Other Forgotten Photons"
haha i was thinking of the same thing
Bud growers haven't forgotten.
He said in another video that this is what he is researching right now.
rock on dark side of the moon reference! i love your videos, thank you so much for the effort.
Thankyou. It is a very nice presentation.
Wonderful class!!!!! Pure applied science
Fantastic info! like serious amounts within the 27min.
Thank you for your help.
The comeback of incandescent light bulbs, after "phantom photons" and it's sequel "bulb wars" now comes "revenge of the wire".
Silly joking aside this IS fascinating and greatly appreciated! Makes me want to make some experiments straight away. Thanks for SHARING!
man, i love your way to explain. thanks.
Thank you Bruce
This is amazing!
Loved the video and the work you guys are doing over there in Utah, makes me want to pursue a PHD and work under you. Quick question, would you recommend doing the veg stage with LEDs with far red or just white light??
Thanks a lot! this is very very very very very nice!
Again, it was a total pleasure listening to you; always as authentic and informative. Thanks! You've proven several laws of light. What if we'ld copy the sun's wavelength ratio.
Thank you, very interesting...
Hi Bruce,
Could you get Apogee to make an entry level meter for those of us setting up indoor grow setups. Most of us can’t drop $585 to adjust our lighting when growing, during cold/dark months. $585 is almost as expensive as buying 2 x 550w Shenzhen Quantum Boards.
I picked up a Lux meter, but that just gives me basics.
All of this is very interesting for those of us that love to grow, especially our own medications. We will be sure that growing and harvest are done right.
I don’t know anybody with an Apogee unit, but we would all drop $250, in order to get the proper setups during each grow.
I agree 100%. It would be excellent if they do such a thing. Hell, i would give 250 for a par meter.
you are a true gentleman, sir. thx 4 your lessons
I love getting the Deep info, and this guy surely gets far beyond the mere Surface on a subject...
Fascinating.
Really cool stuff.
Dr Bugbee drops a Pink Floyd reference right out of the gate, we know what he was doing in college... Love the vids Bruce
you have made me want to study this .... the way you teach ..
W O W ! Thank you a million times.
7:46 "So what's up with that?" I love that.
Great science work. I, and many, are looking forward to getting some far red for our cannabis girls :)
@TFLlighting on instagram, they gave 660+730 nm
I'm already using far red on 13 of my plants.
Wow amazing prof.
Great video 🤘✌️🤙
nice content!
very informative thanks
Wow I learned so much I will have to watch a few time to remember all hahaha. I added an extra basic red light to my cannabis plants about a year ago be for I watched this vid. from a gut feeling. I have full spectrum lights but just wasn't getting the Big buds you see in pic. Wow double the size with the red added. Wasn't sure if it was the light because I had just started Monster Bloom, I have had 2 crops with out red light but With Monster Bloom and buds smaller again. Monster Bloom gave me better results than not buds were denser but not much bigger. So with this info from Dr. Bugbee confirms to me my own test the red light is best!! Thanks Doc going back to red.
Would you share what periods you used and what spectra?
excellent communicator
This was eyeoprning. I look forward to the uv (sub 400nm) talk. If possible it would be great to know how this applies to corals
Interesting to see monochromatic LED's becoming more like sunlight. A far remove from the original "white" LED's that were blue and green combinations.
All about those kelvins and I'll say lumens, same measurements as par. Grew an entire garden indoors hydroponically in every medium during Dec. 2200 lumens/5k kelvin T5s did the trick. Budded 8 girls on one nute through rigorous training too just because I could or got dared..lol
nice video, good job ;)
Is love to see Dr Bugbee get with Dr Kruse
Very cool
I love this man :)
lilac color, aqua green, and blood red. Full spectrum photography shows the best color choices in my opinion for optimal growth.
IT AWESOME information! THANKS A LOOOOOOT !
Thank you sir
Were you able to find any times throughout the lifecycle where far red was beneficial in cannabis, and at what % far red was the benefit found?
I really appreciate all of the great information your channel puts out, and these latest talks from Bruce are invaluable. Looking forward to fitting a greenhouse with your sensors and meters to inform my practices.
Right near the end of the video he does give a few tips for when to use it.
My takeaway was to use it for seedlings, which makes sense to help them get up from the soil, but I wouldn’t use it for more than a few days. Also, use it during flowering. Since it helps enhance cell expansion, that effect would most likely apply to the growth of the buds causing them to grow larger (albeit possibly less dense) since during late flower most cannabis plants are focusing on reproduction priority during that time.
It’s also important to note near the end when he points out the single flower on the tomato plant. I believe he’s implying that the use of far-red during a plants normal veg state can trigger flowering.
@@stewskinner5717 the tomato at the end was used to highlight the fact that far red can induce earlier flowering in plants, a desirable trait if you're trying to produce bigger crops faster. Thanks for sharing your ideas.
At the time I was growing using the SCROG method. The canopy of buds were only about 4 to 6" tall and about 2" from the CFL's. I also had a lot of air movement between the buds and the lights. I was using 12- 23 watt CFL's in a 2' x 14" cabinet with 3 shelves and 2 bloom chambers. Every other light was 2700k. Each day I would turn the scrog screen and plant 180 degrees so that each spot where the plant was getting 2700k the day before, it was now getting 6500k light. Several different cultivars did exactly the same thing. White Widow, Jack Herrer and Blueberry. I hope someone else try's this to confirm my findings. Maybe it will be useful to the indoor cultivation industry.
Fantastic work folks. Have you done any experiments on adding far red for a few minutes after the day period? It’s supposed to help the plant get into night state (it’s version of sleep) significantly faster.
I had a brilliant idea many years ago and now get to finally see IF; feral hemp can be pushed to produce 1-20% thc...without cross and back crossing. Not many studys out there and would love the opportunity to share my results!
Cold weather crops do better with far red then?
Did you all measure BRIX levels and compared that in the plants under far red vs no far red? Thank you for a great presentation.
Thank-you for this information...I am a home grower of salad greens, vegetables, and fruits....
beautiful
Muchas gracias ! traduje minuto a minuto para entender Muchas gracias !!!! Tanks !!!!!
They do make glasses that make the other types of lights look normal so its easier to see any plant problems.
love the vids youve done on your work.
made me buy a light measurer, temperature measurer and 2500 limen white light bulbs to experiment growing weed with.