Very nice , don’t go crazy with nutes, phenos range from old school kush , kush with diesel , to strawberry kush to strawberry syrup over kush , nice chunky buds , worth the f2.
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Did the Master K x SM have good relaxing body effects? Thank you.
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Didn’t smoke them personally good effects from what I remember patients saying
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I believe this to be a genetic kush trait, or similar highland harsh environment trait.
Glossy leaf - to reflect some of the intense sunlight
Crinkle - to route excess water towards the root zone, or to let snow fall off the leaf without breakage
Sharp serrations - to allow harsh wind to pass through without toppling the plant, as well as helping to let water penetrate the canopy
Just my theory from what I’ve seen/gathered. Does make sense that your intense light, heavy watering recently would accentuate some of these traits
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But whats the quality of their genetics? Commercial seed bred indoors for generations will not respond well to UV, or many environmental stressors for that matter imo. It comes down to genetics and selection, and whether or not plants from their respective region will respond. Highland plants get more UV, thus have likely adapted to it and are more likely to benefit from exposure (by our standards of increased resin and quality). Low tide (a strain they tested) for example seems to be a near hemp variety judging by the high CBD content.
I would like to see this sort of test done on raw genetics from around the world, or early F1s of the highest quality, to be able to determine whether UV has potential in some cases.
But in any case it’s nice that this sort of research is being done and it is meaningful in suggesting that UV may not be beneficial for a large percentage of growers.
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Did you read it?
Introduction
Before ultraviolet (UV) radiation can be used as a horticultural management tool in commercial Cannabis sativa (cannabis) production, the effects of UV on cannabis should be vetted scientifically. In this study we investigated the effects of UV exposure level on photosynthesis, growth, inflorescence yield, and secondary metabolite composition of two indoor-grown cannabis cultivars: ‘Low Tide’ (LT) and ‘Breaking Wave’ (BW). After growing vegetatively for 2 weeks under a canopy-level photosynthetic photon flux density (PPFD) of ≈225 μmol⋅m–2⋅s–1 in an 18-h light/6-h dark photoperiod, plants were grown for 9 weeks in a 12-h light/12-h dark “flowering” photoperiod under a canopy-level PPFD of ≈400 μmol⋅m–2⋅s–1. Supplemental UV radiation was provided daily for 3.5 h at UV photon flux densities ranging from 0.01 to 0.8 μmol⋅m–2⋅s–1 provided by light-emitting diodes (LEDs) with a peak wavelength of 287 nm (i.e., biologically-effective UV doses of 0.16 to 13 kJ⋅m–2⋅d–1). The severity of UV-induced morphology (e.g., whole-plant size and leaf size reductions, leaf malformations, and stigma browning) and physiology (e.g., reduced leaf photosynthetic rate and reduced Fv/Fm) symptoms intensified as UV exposure level increased. While the proportion of the total dry inflorescence yield that was derived from apical tissues decreased in both cultivars with increasing UV exposure level, total dry inflorescence yield only decreased in LT. The total equivalent Δ9-tetrahydrocannabinol (Δ9-THC) and cannabidiol (CBD) concentrations also decreased in LT inflorescences with increasing UV exposure level. While the total terpene content in inflorescences decreased with increasing UV exposure level in both cultivars, the relative concentrations of individual terpenes varied by cultivar. The present study suggests that using UV radiation as a production tool did not lead to any commercially relevant benefits to cannabis yield or inflorescence secondary metabolite composition.
Plant Culture
Clonal cuttings were taken from mother plants of indoor grown cultivars: ‘Low Tide’ and ‘Breaking Wave’ and allowed to root for 13 d under humidity domes and fluorescent light (F32T8/TL850; Philips, Amsterdam, Netherlands) providing a photosynthetic photon flux density (PPFD, 400 to 700 nm) of ≈100 μmol⋅m–2⋅s–1 at the canopy. Rooted cuttings were transferred to 3.79L pots (height: 18.4 cm, diameter: 16.2 cm) containing a peat-based substrate and grown for an additional 9 d under LED light comprised of a mixture of Pro-325 (Lumigrow; Emeryville, CA, United States) and generic (unbranded) white LEDs providing a PPFD of ≈225 μmol⋅m–2⋅s–1 at the canopy. The propagation and vegetative growth stages both had 18-h photoperiods. The potted plants were subsequently transferred to a single deep-water culture basin (CB), where they were placed in floating polystyrene rafts in an indoor cannabis production facility in southern Ontario, Canada (described in Rodriguez-Morrison et al., 2021a). There were 384 evenly-spaced plants in the CB at a density of 0.09 m2/plant. The daily PAR photoperiod was reduced to 12 h (07:30 HR to 19:30 HR) on the day the plants were transferred to the CB.
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Yes. I read it a couple of days ago.
I do believe still that any results rely strictly upon the source/quality of the genetics used for the study. I do not believe these are of the level of drug quality which would make the findings conclusive in that respect.
Again, test a highland afghan line or a Hawaiian line and tell me it doesn’t respond well to certain levels of UV (in the flowering stage). That’s what I would want to see.
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Cannabis responds very well to uvb When flowering brings out a lot of extra turpins, flavors and colors. Very beneficial. I use agramax t5 pure uv fluorescent bulbs, I don’t believe you can get good UVb In an LED diode from my experience and knowledge
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Tripping unicorn, don’t know how long it’s been flowering but it’s taking forever lol.
It smells more floural now
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Bodhis LA affie x wookie. Day 34. Found two phenos I wanted to take a closer look at. Really digging the second one with its bushier structure.
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Marisol x Thai Vietnamese reproduction off to a good start with 13/13 breaking soil. Anyone else pop this yet?
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Well that explains your theory…
No need for 640 watts of LM301Hs in a 2x4, and instead of referencing the percent that you set the dimmer, why don’t you get more exact numbers over each plant using a PAR meter ?
That wattage is overkill and your PAR is probably near double what mine is in an environment twice the size.
I’m running an HLG blackbird in a 4 x 4, like it was designed to be run in.
You mentioned crinkling will start at 60% which is very specific to your own set up and environment and is not a hard and fast rule for plants under too much DLI…
I’ve ran everything from crappy set ups in closets to tents to sealed rooms… Heat stress and bleaching happen long before crinkling in many varieties that I have grown
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100%
60%
30%
I know it’s over kill it’s mainly for even coverage. Here’s pictures of everything with an apogee extended par meter.
Edit: yeah 112 DLI so “blasting way past max dli for the plant” was accurate in my other comment.
I usually have em sit at anywhere from 400-600 ppfd depending on the veg time im using but i usually dont use my meter these days.
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And it’s just as accurate in my other comment to say that not every plant will do it under too much DLI
Good to see that you got readings as percentage is more specific to how many watts in what size space than it is to the exact intensity of light over the plant…
We can just agree to disagree because I know this trait does not pop up in every strain.
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i did agree with you a few comments back that there would be some for sure.
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I use 200W in a 2x4 and it has been too much for some of the strains I’ve grown.
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For those who are daily smokers, is there anything that actually dumbs you down and turns your brain off? I feel like everything makes me heavily introspective. Is it just me?! Everything feels like functional weed, and I need some of it to NOT be.
I could really use a reliable strain for those days that I need to just wipe the mental slate and make the canvas blank. (I would like to skip generic suggestions of BBHP, Black Triangle, Secret Chief, Space Monkey; or, convince me as I have these BUT, I’m not wanting to run any 88g13hp this year). I did BBHP last year and was not a fan. Mom’s Lemon Cream Pie was my favorite smoke last year.
I have a bit of a seed collection at this point, dozens of options, and I need to make my 2025 outdoor choices. Shindig, Cocoon, and OM4 are on my short list.
I do have Higher Education & Menehune, which are a bit unique/newer than the rest of the options & a few of the Lavender Lemonade fathered freebies, too.
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Ever since doing a lot of psychedelics, I have this problem, even with narcotic strains.
I’ve known a few breeders who quit because they did so much LSD over the years that cannabis isn’t enjoyable anymore. I’m basically there.
Chem91 has been the best so far at just being in a calm, relaxed space without my mind tripping out.
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