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A light spectrum in the scope of 400 to 700nm induces growth and development, and UV (100–400nm) and infrared (700–800nm) light play a role in plant morphogenesis—which is essentially the process of plants developing their physical form and external structure. Optimizing Your Knowledge in the Grow Room To maximize your yield, always aim for 40 moles, or 40,000,000 μmol, per day. Here is how much PPFD is needed per second for each phase of cannabis growth to achieve the DLI of 40 moles of light per day. Seedling phase (18hr cycle): 200–300 μmol m-2 s-1 Vegetative phase (18hr cycle): 617 μmol m-2 s-1 Flowering phase (12hr cycle): 925 μmol m-2 s-1, (1500 μmol m-2 s-1 @2000ppm co2) (ballpark) When choosing grow lights for cannabis, it is essential to check the technical specifications to determine if they are strong enough to get the job done. Of course, this doesn't mean that you have to buy the most expensive lights there are. Still, it does mean that you should research each of these specifications in relation to your cannabis plants to find a grow light that will fully serve your needs. This is especially true with PPFD, as this is arguably the most insightful value for growers—it tells you exactly how much useful light your plants are absorbing at a certain distance from the grow light. With my fixed light source, as the plant develop height through stages, it will naturaslly grow into higher μmol ranges naturally dictated by its height. Look forward to filling the tent for the next grow. Last week will see increased blues. ELONGATED HYPOCOTYL5 (HY5), a bZIP-type transcription factor, acts as a master regulator that regulates various physiological and biological processes in plants such as photomorphogenesis, root growth, flavonoid biosynthesis and accumulation, nutrient acquisition, and response to abiotic stresses. HY5 is evolutionally conserved in function among various plant species. HY5 acts as a master regulator of a light-mediated transcriptional regulatory hub that directly or indirectly controls the transcription of approximately one-third of genes at the whole genome level. The transcription, protein abundance, and activity of HY5 are tightly modulated by a variety of factors through distinct regulatory mechanisms. This review primarily summarizes recent advances in HY5-mediated molecular and physiological processes and regulatory mechanisms on HY5 in the model plant Arabidopsis as well as in crops. Plants utilize light as the predominant energy source for photosynthesis. Besides, light signal acts as an essential external factor that mediates a variety of physiological and developmental processes in plants. Plants are continuously exposed to dynamically changing light signals due to the daily and seasonal alternation in natural conditions. The various light signals are perceived by at least five classes of wavelength-specific photoreceptors including phytochromes (phyA-phyE), cryptochromes (CRY1 and CRY2), phototropin (PHOT1 and PHOT2), F-box containing flavin binding proteins (ZTL, FKF1, and (LKP2), and UV-B RESISTANCE LOCUS 8 (UVR8). These photoreceptors are biologically activated by various light signals, subsequently initiating a large scale of transcriptional reprogramming at the whole genome level. Extensive genetic and biochemical studies have established that the ELONGATED HYPOCOTYL5 (HY5), a bZIP-type transcription factor, tightly controls the light-regulated transcriptional alternation. Loss of HY5 function mutant seedlings display drastically elongated hypocotyls in various light conditions, suggesting that HY5 acts downstream of multiple photoreceptors in promoting photomorphogenesis in plants. In addition to inhibiting hypocotyl growth, HY5 regulates other various physiological and developmental processes including root growth, pigment biosynthesis and accumulation, responses to various hormonal signals, and low and high temperatures. This review summarizes the recent advances and progress in HY5-regulated cellular, physiological, and developmental processes in various plant species. We also highlighted emerging insights regarding the HY5-mediated integration of multiple developmental, external, and internal signaling inputs in the regulation of plant growth. Among the genes regulated by the circadian clock, we found that the excision repair protein XPA is controlled by the biological clock, and we, therefore, asked whether the entire nucleotide excision repair oscillates with daily periodicity. XPA transcription and protein levels are at a maximum at around 5 pm and at a minimum at around 5 am. Importantly, the entire excision repair activity shows the same pattern. This led to the prediction that mice would be more sensitive to UV light when exposed at 5 am (when repair is low), compared to 5 pm (when repair is high). We proceeded to test this prediction. We irradiated two groups of mice with UV at 5 am and 5 pm, respectively, and found that the group irradiated at 5 am exhibited a 4–5 fold higher incidence of invasive skin carcinoma than the group irradiated at 5 pm. Currently, we are investigating whether this rhythmicity of excision repair exists in humans. Molecular mechanism of the mammalian circadian clock. CLOCK and BMAL1 are transcriptional activators, which form a CLOCK-BMAL1 heterodimer that binds to the E-box sequence (CACGTG) in the promoters of Cry and Per genes to activate their transcription. CRY and PER are transcriptional repressors, and after an appropriate time delay following protein synthesis and nuclear entry, they inhibit their own transcription, thus causing the rise and fall of CRY and PER levels with circa 24-hour periodicity (core clock). The core clock proteins also act on other genes that have E-boxes in their regulatory regions. As a consequence, about 30% of all genes are clock-controlled genes (CCG) in a given tissue and hence exhibit daily rhythmicity. Among these genes, the Xpa gene, which is essential for nucleotide excision repair, is also controlled by the clock. Circadian control of excision repair and photocarcinogenesis in mice. The core circadian clock machinery controls the rhythmic expression of XPA, such that XPA RNA and protein levels are at a minimum at 5 am and at a maximum at 5 pm. The entire excision repair system, therefore, exhibits the same type of daily periodicity. As a consequence, when mice are irradiated with UVB at 5 am they develop invasive skin carcinoma at about 5-fold higher frequency compared to mice irradiated at 5 pm when repair is at its maximum. The mouse in the picture belongs to the 5 am group with multiple invasive skin carcinomas at the conclusion of the experiment.
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@iMeus
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~ Update ~ Hello my friends, welcome back to another weekly update. I have a few issues going on so I’ll put those below in the IPN. This has been a good week so far, the girls are very happy, except the bazar mazar… Other than that it’s exciting that I’m pretty much at the halfway point :) Anyways, enjoy the update and let me know what you think in the comments, I always appreciate feedback ~ Individual Progress Notes ~ [CBD] Notes: This is the healthiest of the bunch, nice rich green leaves and fluffy buds. I’m surprised the this little mutant is doing so well. As I said in the vlog GCS got back to me last week, I’ll keep them up to date with my grow so they know what’s going on with this girl. [Mazar] Notes: Burn! I’m noticing a lot of small but noticeable spots, leaf chattering, and slight yellowing at the tip of the leaves. I feel like I should just avoid feeding this girl though I’m not sure if that will help the situation. If you guys can take a look at this girl I’d really appreciate it :) Edit: I found out thanks to my friends here on GD that I burned my Bazar Mazar :( So time for water which I might only give her water and flower fuel then flush till harvest (might be my cleanest tasting and smelling afterwards). It's hard to feed 4 different metabolisms every watering, but hey I'm learning :) [Super Silver Haze] Notes: The beast of the grow! What a lovely plant. Even though this girl got really hungry and started cannibalizing the lower leaves her buds are massive! I’m impressed with the total growth of this beast. Honestly, I’m cheering this girl on, might be my favorite (don’t tell the others). [White Widow] Notes: More like purple widow, this dense girl is showing her dark side and I like it. I planned on the purpling, still surprising to see all this purple though. I like purple buds but I don’t want this (or any of the girls) getting shocked by the cold. Hoping the I can get a few more pieces of gear to help out the next grow. ~ Final Thoughts ~ What a week, some of the girls are rocking and the Mazar, not so much :) It’s a learning experience that will take some time for me to learn how to balance all (most) of the variables. Thank you guys so much for all the love and support, I always appreciate it :) Happy holidays and good grow’n fam, much love Meus <3
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@Ozeola
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This is been a pleasure to watch flower and grow. In the earlier seedling stage she was a bit delicate and there was a little cupping to the leaves but that ironed out later on. She started showing flowers or a pre-sex real early but then just started filling out Calyx on top of calyx. Flower flower flower. This was a strain that I wanted to grow as long as possible we’re gonna be going into week 13 so I decided to cut her down branch by branch. I’m going to be doing a cold drying process that I’ve been experimenting with. It’s where I will place it in a cool and preferably low humidity area. I have a cooler that has a small heater air conditioner installed into it. I will keep the flowers that are drying half the time in the cooler and half of the time at room temperature so that way we retain maximum Terps.
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Time goed fast and this plant is growing beautifull buds that grow bigger day by day and i can't wait for this one to be done. four days ago i started adding the flower booster to the mix to get the buds nice and thick the development of the flowers is going great we have one plant with a very long stem and that one is turning into a big main cola pretty fast and the smaller nuggets are developing really nice although not all the plants look that good the flowers that they produce are perfect and i thing this is going to be my best yield from under this light i can't wait to find out i grew Spliff seeds in the past and got a great yield of those plants and it looks very promising besides adding the booster to the mix i did some defoliation last week this was the last time untill harvest to not overstress the plant That is all for now check out the pictures and the video Cheers, Nibameca
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Day 100. ( 60 days of flower ). 4 Jack Herrer and 2 Diesel were Cut and Harvested. They we're hung dry for 10 Days at 45% HUMIDITY and 17 C DEGREES. They are getting Trimmed and will be put in Glass Jarres for the next 3 weeks getting the burps they need. Day 110. ( 70 days of flower ). 2 Gorilla Bomb were Cut and put to hang for 5-10 Days at 45% HUMIDITY and 17 C DEGREES. I will update with Pictures / Yield / Weight / Smoke Grade / Growing / etc. in the next couple weeks. Aiming for 2 Pounds in total for this grow. It was in a 8 Feet x 4 Feet Tent.
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Last week wen smooth as it is supposed to go, girls are loving the conditions so its time to start feedings, for this run I’m using all in one pallets as food and just watering with Regulator ( a must in my water) and some microbiological help and iff and wen needed, only them i will complement extra N, P or K as needed. Caps off to VIPARSPECTRA , so far so great 🌱🙏💚 All going smooth, not much to say, today I changed the gopro setup to a top view , lets see with one stays better on the time-lapse , fell free to comment and leave your opinion, and if you use gopro or other camera to do your time-lapses, i love to learn about others ideas and ways to do things 💚💚💚 You can check out last week timelapse here https://growdiaries.com/diaries/126067-grow-journal-by-dogdoctor and if you in to timelapse stuff i have just recently uploaded the Magnum auto Timelapse just for fun here https://growdiaries.com/diaries/105893-grow-journal-by-dogdoctor , hope you guys enjoy it 💚💚💚 growers love and one more week up we go 🙏🌱💚 And with enormous honor and pleasure that i start collaborating with Zamnezia and Viparspectra For this run i will have the pleasure of growing some Runtz genetics from Zamnezia seeds that they wore kind enough to send me for test and review 🙏🙏🙏💚💚💚🙏🙏🙏 and for the testing and reviewing i was blessed with the VIPARSPECTRA model P2000💚💚💚🙏🙏🙏 they wore amazing and send me this LED light for me to do some testing and some reviews. Special thanks to Zamnezia and to Viparspectra for this opportunity, lets make magic together 💚💚💚🙏🙏🙏 All i grow is medicine for myself, for me and for my best friend with is me 😆 nothing to sell, so don’t even ask 😅💚💚💚 All info and full product details can be find in can find @ https://viparspectra.eu/collections/grow-lights DISCOUNT CODE - DOGDOCTOR https://www.zamnesia.com DISCOUNT CODE - GROWITGD https://aptus-holland.com/ More info and updates @ https://growdiaries.com/grower/dogdoctor https://instagram.com/dogdoctorofficial https://youtube.com/channel/UCR7ta4DKLFMg2xxTMr2cpIg 💚💚💚Growers love to you all 💚💚💚
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She will need to go under natural sunlight to recover as the lights are to powerful for her at the moment. She will be repotted in the next few days!
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@Seebd420
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The plant turned out to be a photoperiod and I am unsure if the seed tender has sold me the right seeds. The plant smells weird... like onion sort of... very leafy and very very sensitive to humidity and mould. This was not an easy grow by far, I was constantly maintaining these fruit autos and it just hard such an odd structure. I would say grow these lower THC strains (under 20% thc) in super organic soil. Coco was what i was using with some worm castings as a top dress throughout flower.
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@valiotoro
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Pheno 1 dark purple : On the nose, it reveals a sharp burst of fresh lemon, layered with a powerful eucalyptus aroma that’s both invigorating and camphorous. A truly refreshing and vibrant terpene profile😈🍋 Pheno 2 Green : this one is a real surprise! If I close my eyes, it’s like Nutella! It’s as if you’ve just walked into a kitchen where hazelnuts have been freshly roasted 🤤🌰 Pheno 3 light purple : It’s a mix of the first two with a hint of amarena cherry at the end🍒🍧
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Day 49: Watered the plants 0.5L with nuts, 4L total, 840 ppm, 1785 us/cm, PH 6.5 Day 52: Watered the plants 0.5L with nuts, 4L total, 727 ppm, 1551 us/cm, PH 6.5 Day 54: Watered the plants 0.5L with nuts, 4L total, 869 ppm, 1848 us/cm, PH 6.4
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@Ryno1990
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The Purple Lemonade from fast buds is looking amazing with her purple trichrome covered buds she has been thriving under the medic grow fold 6 an loving the cronk nutrients witch is no surprise because cronk nutrients has always worked amazing for my autoflower grows can't wait for this one to be done as it smells like sweet candy
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@StarLorr
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Welcome to my Pablø Escøbar Diary. In this diary: Seeds sponsored by: Ðivine Șeeds Media not sponsored😄 Nutrients not sponsored🤪 Light sponsored by: Şun☀️ ___________________________ Feeding: No feeding since may 20th.. Pablo is kinda slow🤫so i won't force feed her and today May 26th it poured rain all afternoon. So Mother Nature did it for me😉 ___________________________ Past week was very warm and she loves the outdoors ... Perhaps not so much with todays wind gusts🤣 ___________________________ Thanks for stopping by, likes and comments are appreciated!👊🏻😎 Keep on growin! Keep on tokin!!! 😙💨💨💨💨💨
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@Kardo
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Es ist die Zeit gekommen und die Lemonberry ist ab ich trockne sie jetzt noch 10 Tage und dann kommt sie in die Gläser sie riecht sehr fruchtig
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@Darksoul
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In the end of the flora. Maybe two more weeks (one week for rippen another week for flush) My first time hydro with scrog gone very well! Thanks a lot Jah =)
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Week 10 Update – Full Throttle with Advanced Nutrients 🌱 I’m now feeding 100% of the Advanced Nutrients schedule with all components. I noticed a slight calcium deficiency in the AN plants, so I’ve increased the base nutrients from 75% to 100%. Advanced Nutrients CalMag Xtra remains at 1ml/L, and it has been reliable throughout the grow with 0 EC osmosis water. BioBizz#1 – BT42 The trichome ripeness is mixed—there are both amber and clear trichomes, so it’s not quite consistent yet. CalMag issues show up occasionally, but nothing that’s throwing me off balance—she’s doing fine! 🤞 AN#4 – BT42 She’s asking for a bit more calcium here and there but continues to dominate BioBizz#1 in terms of development. EC: 2.5 pH: 6.4 Drain: pH 6.1 (EC not measurable due to organic soil). AN#3 – BT38 This plant is visually about 2 weeks behind the others. The space between her and the lamp is down to 1-2cm—a disaster, but there’s nothing I can do at this point. PPFD is off the charts (1200), but she’s handling it and developing beautiful buds. Big respect to this strain—the stretch was no joke! Humidity is well under control at
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Final week 10 and a half harvest and the nugs are fully plumped up and very crystally the decent bit of yellowing as well I think the double dream is definitely going to yield a decent bit and we're going to drive for five days after our flush for six days. Attached to some of the root pictures from the harvest which just shows the massive amount of a root ball that you can see for the left side on double dream.