Chat
RecommendedRecommended

Put in the dark before harvesting?

Matteliquo
Matteliquostarted grow question 3 years ago
which of you puts it in the dark for 48 hours before harvesting? and what changes do you notice? do you recommend it?
Solved
Other. Harvest - Drying
like
Ultraviolet
Ultravioletanswered grow question 3 years ago
72 hours of pure blue (replacing/supplementing)Full spectrum (0 INFRARED) <<< This will do terpenes and it works beyond your wildest dreams so long as you keep it below 67 from thereon. 72 hours of darkness , this sends signals to the plant that it is essentially covered in snow, it gathers all its remaining starches and sugars and drives it all deep intro the rootsystem <<< This is for taste dropping RH % also acts as a stressed to release one last hurrrahhhh Terpenes are aromatic compounds that give cannabis some of its most distinct aromas from citrus and berry, to more earthy tones. Many species of plants produce and emit terpenes in a diurnal, or daily cycle that is regulated by a complex web of signaling. There are also many plants that emit terpenes at night to attract nocturnal pollinators (Marinho et al., 2014346). Regardless of when the terpenes are produced or emitted, these processes are often dependent upon cues derived from natural light/dark cycles via a native circadian clock (Dudareva et al., 2004). Several light-sensitive pigments are involved in these processes of production and emission, and the different photoreceptors are dependent upon different wavelengths of light to be activated or deactivated. Emission of terpenes is a process that is entirely dependent upon phytochromes and red/far-red light cues in most plant species (Flores and Doskey, 2015). For example, repeated light/dark phytochrome signaling is necessary for the emission of terpenes in tobacco plants (Roeder et al., 2007). Based on previous findings, we hypothesized that a lack of red light and phytochrome-mediated light/dark signaling on the part of the plant is responsible for an increase in terpene content in cannabis. The plant continues to synthesize terpenes, but a lack of red light to trigger the Pr-Pfr shift results in a lack of terpene emission by the plant, thus causing the terpenes to accumulate in the maturing flowers. REFERENCES Dudareva N, Pichersky E, Gershenzon J. Biochemistry of Plant Volatiles. Plant Physiology. 2004;135(4):1893- 1902. Flores, R.M., Doskey, P.V., Estimating Terpene and Terpenoid Emissions from Conifer Oleoresin Composition. Atmospheric Environment. 2015. 113, 32-40. Marinho, C.R.; Souza, C.D.; Barros, T.C.; Teixeira, S.P.; Dafni, A. Scent glands in legume flowers. Plant Biology , Volume 16 (1) – Jan 1, 2014 Roeder S, Hartmann AM, Effmert U, Piechulla B (2007) Regulation of simultaneous synthesis of floral scent terpenoids by the 1,8-cineole synthase of Nicotiana suaveolens. Plant Mol Biol 65: 107-12 Sound waves technology has been applied to different plants. It has been found that sound waves were at different frequencies, sound pressure levels (SPLs), exposure periods, and distances from the source of sound influence plant growth. Experiments have been conducted in the open field and under greenhouse growing conditions with different levels of audible sound frequencies and sound pressure levels. Sound waves at 1 kHz and 100 dB for 1 h within a distance of 0.20 m could significantly promote the division and cell wall fluidity of callus cells and also significantly enhance the activity of protective enzymes and endogenous hormones. Sound waves stimulation could increase the plant plasma membrane H+-ATPase activity, the contents of soluble sugar, soluble protein, and amylase activity of callus. Moreover, sound waves could increase the content of RNA and the level of transcription. Stress-induced genes could switch on under sound stimulation. Sound waves at 0.1–1 kHz and SPL of (70±5) dB for 3 h from plant acoustic frequency technology (PAFT) generator within a distance ranged from 30 to 60 m every other day significantly increased the yield of sweet pepper, cucumber and tomato by 30.05, 37.1 and 13.2%, respectively. Furthermore, the yield of lettuce, spinach, cotton, rice, and wheat were increased by 19.6, 22.7, 11.4, 5.7, and 17.0%, respectively. Sound waves may also strengthen plant immune systems. It has been proved that spider mite, aphids, gray mold, late blight and virus disease of tomatoes in the greenhouses decreased by 6.0, 8.0, 9.0, 11.0, and 8.0%, respectively, and the sheath blight of rice was reduced by 50%. This paper provides an overview of literature for the effects of sound waves on various growth parameters of plant at different growth stages. https://doi.org/10.1016/S2095-3119(13)60492-X
2 likes
Complain
Selected By The Grower
Coopmc
Coopmcanswered grow question 3 years ago
If you pick the plant during lights on instead of lights off all the terpintines priduced over night get baked off so at least pick it before lights come on
1 like
Complain
Coopmc
Coopmcanswered grow question 3 years ago
It will make resin pop I pull my plant that I’m harvesting out at night before my lights come on and let her sit in a dark corner. You get the same action with a good slow dry either hang while plant or branches the plants metabolism keeps going
1 like
Complain
TickleToast
TickleToastanswered grow question 3 years ago
Yes! This has been proven by multiple institutions, and MANY a grower. They split their garden in half prior to harvest, one half got 72 hours of darkness and the other did not. The half with the darkness period had a higher concentration of THC. The reason being - THC is used up by the plant during the day, it's essentially sunscreen. It is "most easily" replenished at night - when it's not being used and daytime processes are at a minimum (plants need SOME rest to be at their best). We give it the 48-72 before the chop to ENSURE that the plant is at its maximum capacity at that time - no "boosting" is happening here. To not do this would be "potentially" to deny yourself some of that THC (some plants I imagine would do this just fine in the 12 hours of night - there is no in-depth studies on this yet) ~~~~~~~~~~ Best to give it at least the 48 hours as a general rule of thumb - just so you don't miss out on any quality after months of work. Especially if your doing 24 hours, or 20/4.
1 like
Complain
ChildOfStars
ChildOfStarsanswered grow question 3 years ago
Its because nuts go to the roots in the night time so you harvest just before the dusk or after prolonged darkness plus plant stresses a little and gets frosty
1 like
Complain
auto_floo
auto_flooanswered grow question 3 years ago
I do it as well ,if it works well ,you need to try it for yourself ,there has been lots of discussion and broscience tips on how to boost resin production before harvest 👍🏼 ,so go for it .
1 like
Complain
LetMyPeopleGrow
LetMyPeopleGrowanswered grow question 3 years ago
I've done both with the same strain and didn't see a difference. This time I gradually dimmed the light over the last week to try to replicate fall kind of. IDK if that did anything either.
2 likes
Complain
deepsheeba
deepsheebaanswered grow question 3 years ago
There's no evidence that this would help the plant making more thc nor tricomes. Anything else is broscience.
1 like
Complain
Roberts
Robertsanswered grow question 3 years ago
I put mine in darkness for 48 hours. To me logically the whole grow we hurt the plants stressing them to grow ways to be more bountiful. Yes it is unproven, but it also helps to start leaching the chlorophyll from plant. Which can make for a smoother smoke. I will always do darkness before a cut. When plant sleeps it stores the sugars in the roots supposedly as well. Which will also improve quality of smoke. So I would be for darkness 100 percent.
3 likes
Complain
BigbudzMagee
BigbudzMageeanswered grow question 3 years ago
Stressing a plant at the right times can have beneficial results. Stressing before harvest makes the plant produce more resin as a defense. Stressing the plant early on can make it grow quite a bit bigger and faster even. Strains are all different but the basics apply to most. So I do keep in dark 48 hrs. But maybe it's all in my head. Lol
4 likes
Complain
Organoman
Organomananswered grow question 3 years ago
Cornflake packet science. It is scientifically unproven and does not work 100% of the time and in every situation and with every strain. Unless you had two clones growing in exactly the same situation and could compare them directly, any difference is most likely in ones head (placebo effect). To me this seems a stressful intervention and why anyone would want to stress their pants after weeks/months of careful cultivation, and right before harvest, is beyond me. All it can really do is slow the plants metabolism drastically, possibly leading to trichome//cannabinoid degradation, not enhancement.
5 likes
Complain
Similar Grow Questions
Solved
ElBarto66
ElBarto66
Harvest time?
Other. Harvest - Drying
3 months ago
4
4