Sedate: You are laboring under old science.
I am laboring under old science huh? LMAO.
Then why does your link cite a source from
1972?
chazbolin said:
There is ample data to support the need for green light as a necessary component for optimum photomorphogenesis.
I'm sorry but what you linked to was a smallish post-grad science project. Which certainly does
not qualify as "ample data"... a post-grad science project into the relative veg speed of salvia/petunia/tomato plants grown out of seedlings for all of six weeks hardly qualifies as irrefutable compelling data.
Secondly, if you actually read that thing you linked too, it tells you to use blue lights for shorter, bushier, stackier plants:
From chazbolin's link: said:
Therefore, blue light suppressed extension growth more than green light in an enclosed environment
The entire reason we use MH's for veg is to stack internodes as close together as possible. This is
highly desirable for dense cola formation when you are dealing with the vagaries of artificial lighting. This is what we want.
From chazbolin's link: said:
. Twenty-five percent green light could substitute for the same percentage of blue light without affecting fresh weight. However, the electrical efficiency of the green LEDs was much lower than that of blue LEDs.
Translation: You could replace blue with green with largely the same results if you want to waste electrons
Lastly, let's take a look at that picture from the experiment:
http://msue.anr.msu.edu/uploads/images/Plant Ag/2-6SalviaHEIDI.jpg
See that first plant? See how the FOLIAGE is the same as the others? The STEMS are just longer? So the green is stretching the plant's internodal lengths over the comparable blue input. Which we could get anyway with a standard HPS.
chazbolin said:
As broad spectrum goes the plants finish differently than under narrow chromatic approaches such as straight HPS in flower. CBD:THC ratios under HPS that might range 8:1 for example I've seen come in closer to 1:1 under broad spectrum. The plant will defend itself from the presence of UV-B by creating more trichomes and the trichomes they produce will be hard cut geometry.
What? Are you saying here? You do understand that more UV-b will come off a HPS or MH than some green-lit LED panel right? You know the electromagnetic spectrum is UV->blue->green right?
In addition to covering themselves in trichomes as a "sun screen", don't trichomes also require UV to produce THC within the glandular head?
If so, would those 10k MH bulbs accelerate this?
10K Mh's are finishing bulbs. Last week of flower type of thing.
I suppose I would think that if the plant is expending energy on resin production for protection from UV-b - then that light spectrum would not be particularly 'nutritious' for the plant..
