ganjaments
Member
Spurr, thank you very much for your input in this thread and the documents in the other thread, it is greatly appreciated. It looks like I have quite a bit of reading to do!
as stated above a green LED is uv free. I use a green LED because the plants dont react to it and it will not interrupt their photo period.
Spurr, thank you very much for your input in this thread and the documents in the other thread, it is greatly appreciated. It looks like I have quite a bit of reading to do!
Do you have a link for this? It was my understanding that people harvest before lights on to obtain peak potency, before it has a chance to degrade from HID's?
So a UV-Free lamp would be the best to use during and after harvest?
Some people are pretty anal about light exposure (ever see a duct taped stash jar?), and having hard data on this would be quite helpful to quantify those concerns.
I always harvested at the end of the light period. Just following what I had read in a REAL bible. However there is some bad info in the book. Would anyone like to elaborate when is the best time to take the plant down in its light/darkness cycle?
It's already been said multiple times in the thread. The whole point of harvesting a plant during the dark cycle is to get it when the majority of starches are in the plant's roots, and not in the buds themselves. If you're going to flower a plant for 55+ days, what is one more light cycle going to do for potency in the grand scheme of things? Sure it might be slightly more potent, but it's going to be harsher smoke.
Not to my understanding, where do you find that info? AFIK, only < ~25% of the photosynthetic assimilate (e.g. carbohydrates/starches) produced by the plant is moved into the roots regardless of day or night. Light independent reactions of C3 plants entail various functions, such as conversion of photosynthetic reactions into starch (that happens in light and dark).
- That’s very good to know. The clever observer can see how high I am in certain posts, I say both, and I put in 3 variables, which too, I’m going off ancient memory, not actual fresh sources.That said, the effects of other spectrum of light in PAR range do not have a great effect upon THC > CBN conversion AFAIK.
- I have read of some of UVbs effects, but not yet everything, such as papers you have uploaded on the issue, which having acquired I want to pine over. I’ve been strongly interested in the possible effects of UVb radiation and Cannabis with the speculation bantered about. I’m wondering how many percentage points we are talking.. All it all though, it just makes me wonder why would the plant produce more trichomes, and more THC/Cannabinoids/terpenoids, if it did, in the presence of UVb. What is the mechanism, why and how did this adaptation arise, if it is an adaptation. I feel as though the achene itself, among the polymorphs, many seeds bear stripes/banding and dark coloration from greys to browns, and these are adaptations by the seed coat to protect the embryo from ultraviolet radiation which could cause deleterious mutations.. So...However, in terms of light, UV-b has a strong effect upon increasing THC production in cannabis (see what I have posted in the UV-b thread).
Along with light, nutrients (i.e. nitrogen) and temperature have rather notable impacts upon THC accumulation.
- Well, I’ve seen some studies that show limiting effects with the application of nitrogen from the Journal of Industrial Hemp, I’m wondering how greatly cannabinoid amounts are affected. From off the top of my head, studies involving light could influence ratios by a couple percentage points. I forget how much nutrients can affect ratios, perhaps a few points as well (certainly nutrients appears to be quite an area of expertise for you).Cannabinoid amounts (quantitative) is a phenotypic trait that is strongly affected by the growing environment, fertilizers, etc.
- You explained it so much more conciselyCannabinoid amounts (quantitative) is a phenotypic trait that is strongly affected by the growing environment, fertilizers, etc. And cannabinoid ratios to other cannabinoids (i.e. chemotype; normally qualitative) is a genotypic that is not strongly affected by the growing environment, fertilizers, etc.