You are absolutely right. Thank you. If i say it Lukio Trolls me down.
As low as 730nm excites the molecules within the leaf causing them to move around. The more they move around & bounce off each other, the more there I'd friction created. Which in turn raises the internal leaf temp. We could afford to go up to 750 imo but may have positive effects up to 850 as it does for humans.
I also believe the lack of ir in white leds is preventing the processing of Vit-D & is causing these problems. Why i said adding Vit-D to your feed underr white leds might be helpful as that is what the Dr. Does for us when we do not get enough sunlight. Also the main purpose for The existence of Broadband single diode phosphor leds. As well as IR therapy lights that are very popular.
Yes, need the blues but for more then just stretch.
I laughed my ass off at your first comment.
What your describing is the definition of heat and it's thermodynamic properties which follow the first and second law of thermodynamics. Heat is transferred in a few ways but as it pertains to plants is mainly through radiation which is as you describe. Its also in conduction and radiation into the root system but thats different than what we are talking about here.
Its a photon exciting the plants pigments but more specifically at the subatomic level which involves the excitation of electrons into the next orbital state and this herein describes the transfer of radiant heat and it's effect on the metabolic rate of photosynthesis of the plant. There are different pigments and these capture different wavelengths.
Chlorophyll-a absorbs most at 430 nm and 660 nm, it also contains a magnesium molecule in it's molecular chain. Most LEDs are lacking at 430 nm and to a lesser extent 660 nm. Funny thing is chlorophyll-a is the most abundant pigment in plants yet Leds don't cater to ch-a, but rather to ch-b.
Choloropyll-b on the other hand absorbs most at 453 nm and 642 nm. LEDS are more geared to drive the ch. b molecule which doesn't have a magnesium molecule.
If i were a betting man my observation is if you dont provide the plant with enough light energy at 430 or 660 it has to overcompensate and expend more of its energy to manufacture more of its dominant pigment chlorophyll-a than would otherwise be necessary (in the sun). It needs to increase the amount of surface area of the chlorophyll-a to capture the relatively small amount of 430 and 660 wavelength light leds produce thereby generating a heavy dependance on magnesium because magnesium is in its molecular structure. To note chlorophyll-a is the only pigment molecule that contains a magnesium molecule. Also add in that ch-a also absorbs a good deal of light between 320 nm and 430 nm which current leds dont provide. Plants are a chameleon, they generate different pigments at different wavelengths to accomodate the lighting conditions we provide but this takes the plant more out of its "happy" place and is the reason why we see so many issues with mag deficiencies in indoor growing.
platinumtherapylights.com
