There is a lot we dont see. Polarized lenses can reveal new things as well. I saw where a new species of fish was discovered because to our naked eyes it looked the same as another species, but with polarized lenses it has stripes which the other fish species doesn't have.Just with the extra UV output from a grow light you can see things going on with the leaves you don't see in sunlight. And the sun illuminates things... like bugs... that you don't always see under a grow light.
I searched for "scotoperiod bot" but didn't find anythingyeah this seem more and more familiar ... if not the same just a clone.
The analogy still doesn't work. Your full of shit.It's an analogy, use your head and common sense. People are also effected by photoperiodism, dark/light cycles. Its s known form of torture to keep people (and plants) under bright lights 24/7. By obsessive focus on light, the understanding of dark is neglected. Anyone with common sense can realize plants have evolved with darkness. It's not their enemy. They rely on it.
Try butt.I searched for "scotoperiod bot" but didn't find anything
It doesn't work because you don't understand what happens in scotoperiod. Learn biology, then come back, and it will make sense.The analogy still doesn't work. Your full of shit.
Damn, and I already nominated someone for POTM. Oh, well. Maybe next month. Time to leave you all to the screens. I got shit to do.All I got was this...
View attachment 2407333
Yeah, the UV doesn’t illuminate caterpillars! But it illuminates their damage! I’ve never had a grow light, so I’ll take your word for that one! And caterpillars are hard to spot even on a bright day with my eyes! Lol! Fortunately, I don’t have much of a problem with them or mold!
I had considered the reflectance factor in relation to the purple pigment. I have one light that creates a lot of purple but also produces fine weed. It's an AC Infinity S22 in a 2x2 tent. I've read that purple pigmentation can be protective as well as being a response to stress. I had not, however, considered the spectrum-specific aspect of the color. An interesting idea. Thanks. Are there theories about how or why reflectance of that part of the spectrum is beneficial or necessary?I see this in my own grow with a UVb light. The plants purple up more in an attempt to reflect that light away from the plant. Fascinating stuff indeed.
Polarization is subtractive, not additive.Polarized lenses can reveal new things as well.
Yes because uv radiation is the most harmful to the plant. That's why we add UVb to our grows. Trichomes and anthocyanins (purple) are what protect the plant from uv radiation which to us looks so dark purple until we can't see it. Same on the other end with red.I hadn't read this thread till today. I can't say I have much reason to replace the full-spectrum lights I have, but I am looking forward to future light technology. I appreciate the information provided by the well-intentioned farmers. In particular, I found this comment intriguing:
I had considered the reflectance factor in relation to the purple pigment. I have one light that creates a lot of purple but also produces fine weed. It's an AC Infinity S22 in a 2x2 tent. I've read that purple pigmentation can be protective as well as being a response to stress. I had not, however, considered the spectrum-specific aspect of the color. An interesting idea. Thanks. Are there theories about how or why reflectance of that part of the spectrum is beneficial or necessary?
So, that leaves the plant with whatever parts of the spectrum remain after subtraction of green and UV wavelengths. That could be how the same or a similar pigmentation response relieves stress, with the implication that plants may be constantly defending themselves against the reflected wavelengths but might need an assist when under stress.Yes because uv radiation is the most harmful to the plant. That's why we add UVb to our grows. Trichomes and anthocyanins (purple) are what protect the plant from uv radiation which to us looks so dark purple until we can't see it. Same on the other end with red.
Reasonable.It's a protection that evolved to reflect the wavelength away. Plants don't see light they feel it. I think that weed that gets purple on its own is just more sensitive to it and maybe all of them are at the end of their life so they make more idk.
I’m sure Bugby has done something on what you’re looking for! He also addresses the UV effect! And which parts of the spectrum affect plants in certain ways! Just takes a lot of time to find it!I hadn't read this thread till today. I can't say I have much reason to replace the full-spectrum lights I have, but I am looking forward to future light technology. I appreciate the information provided by the well-intentioned farmers. In particular, I found this comment intriguing:
I had considered the reflectance factor in relation to the purple pigment. I have one light that creates a lot of purple but also produces fine weed. It's an AC Infinity S22 in a 2x2 tent. I've read that purple pigmentation can be protective as well as being a response to stress. I had not, however, considered the spectrum-specific aspect of the color. An interesting idea. Thanks. Are there theories about how or why reflectance of that part of the spectrum is beneficial or necessary?
They're not defending against green. It's in the middle of the spectrum where you want to be if you need to soak up red and blue and not reflect them back into space. The extremes out on the ends are bad... uv and infrared. Can't reflect either tho and far red is essential...go figure.So, that leaves the plant with whatever parts of the spectrum remain after subtraction of green and UV wavelengths. That could be how the same or a similar pigmentation response relieves stress, with the implication that plants may be constantly defending themselves against the reflected wavelengths but might need an assist when under stress.
Reasonable.
Nobody loves Dr Bruce Bugbee more than meI’m sure Bugby has done something on what you’re looking for! He also addresses the UV effect! And which parts of the spectrum affect plants in certain ways! Just takes a lot of time to find it!View attachment 2407432View attachment 2407433
I am familiar with his work.I’m sure Bugby has done something on what you’re looking for!
Okay. A poor word choice. Either way, whether reflected or defended, it's generally agreed that green wavelengths aren't used much by the plants. In which case, the green color could simply be due to the chemistry of chlorophyl and lacks any other significance. (I forgot for a moment that chlorophyl is green.) Is it a safe assumption that the plants might have evolved greater sensitivity to other parts of the spectrum to accommodate the loss of the green part?They're not defending against green.
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