I don't think it's the best made graph, but they are trying to show how much light is absorbed by the leaves, how much is reflected, and the wavelengths involved. The tan area is what is absorbed. Notice the >700 area that light is not absorbed very well. Also, notice the light that is reflected up on top in the green area. According to the chart, it seems as though most of the green light is absorbed and only some is reflected back?
according to djshorts, blue (cobalt) glass may be worth looking into
dunks are bacillis thuringensis v. israel (sp?) good vs. fungus gnats. u want spinosad & neem/extract... I actually mix neem oil & azamax to get the extra goodies in the crude oil. repeat spin every 3 weeks sorry to repeat me PM info just figrd others would benefit
http://www.medicalmarijuanami.com/how-to-organically-control-thrips.htm
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from what im seeing certain levels of intensity must be achieved before a plant can use certain wavelengths it also goes to show looking to the far right that any NM past 700 needs to be with in a very specific range to be absorbed that is what i was most interested in but now that you make that point.... green absorption should be much more restricted than what it is showing unless we are missing something about intensity.
Ill look it over but ill give ya this, I've been doing organic food farming for over a decade, and if BT v. i was good for thrips it would be widely reported b/c it is a wide distribution pest and a heavily used/marketed bacterial larvicide. I use dunks as a preventative for gnats and still picked up thrips in a clone (dude denied having them then called a week later asking for a solution for his thrip problem) and spinosad/max once and two followup 'sad apps, done deal. had gotten to 6 others by then too. Granted I nuked the clones, who knows what else they had.
Hmmm, if ya got a Sativa strain that you are budding I would say ya got a good spectrum, but if it's Indica then I would scratch the 2 UVL454's and go 4 FloraSuns and 4 UVL 660nm.
i hope we all didnt miss this with the mosquito dunk talk(sorry fonz) but these link are definitely worth having a look at they explain green light usage in plants and surprisingly it is much much higher than we had though.
Light absorption pretty much drops off after 700nm. However, at 730-740nm the light forces Pf back to Pfr quickly in plants mimicking a full night of darkness. This allows for faster growth, shorter night cycle which I still have yet to see, and overall a savings in electricity $$. Typically it takes time for the Pf to revert back to Pfr naturally in the plant. The 730nm wavelength speeds this process up.
FS/660 50/50. Since they don't have 660nm in 2ft length yet you could try using redsuns instead. I haven't tried that spectrum yet, but it may work. The thing is, Indica's won't finish under a blue heavy spectrum. You should have seen my last Indica buds that were grown under a blue heavy spectrum. They never finished. Veg growth was really nice, flower set was really nice, but they never filled out. The calyx's never filled up. They were 1/3rd the size.Thanks for the fast response guys I run hybrids so I guess I'll have to play with it a bit. Either way I have to wait for uvl to put out 2 footer 660's
I do stick to more indica dominant though so maybe just a fs/660 split? The aqua sun is a 430ishpeak right? Why that over the higher blue? Or is it the fact aqua sun has a broader spectrum?
Could you point out where in these links it talks about green light usage in plants? I'm not seeing it. According to my other source, in low light conditions, red/blue spectrums are going to be more useful. In high light conditions, (I would guess 150w and higher, green light is more readily absorbed). From all of the info I have gathered, you want to have the whole spectrum in the presence of higher luminescence. like that rhyme? hehe
I'm running the 4 flora suns ,2 aqua suns and 2 coral waves. I thought I might be to heavy on the blue side at first but looking at how it lights the room, it'a almost looks neutral. The flora suns are red heavy and with the greens and yellows from the aqua suns and flora suns it seems more balanced to my eye than I thought.
right! thats what those 2 pages basically taughtme in higher luminescence green and yellow light become more photosynthetically active. another thing it pointed it (in florescence one) it went on to say (paragraph 3 i believe) that non photosynthetic light is absorbed and floureced back out at a longer wavelength.