Droughting and its medicinal effects in cannabis

[Azimuth]

Don't follow

Maybe you're saying 180 - 20 = 160, 50% of which is 80 which is not the target but is added to the 20 giving the target as 20 + 80 = 100

 

[InTheShed]

Don't follow

I dont think it's worth pursuing here since it's history. As long as you understand that it's a 50% change in LWA you're good.

 

[Mlburk1]

most all leaves were wilted down but nothing was dry! Everything was still pliable and soft nothing was dried up except for some tips. I think it just used up everything in the sugars and was moving on into the plant , but I watered after the ten days so I didn't lose the plant. should recover from here . think 1 to 2 weeks left

 

[TorturedSoul]

Not sure that your 70° is the same as mine. If your 70° is from the same start as the 20° then you were off by 30%.

Math, whew. I had some automatic cannabis calculators - but they were on floppy disk.

 

[Krissi Carbone]

Here we go 10 days drought and watering today ! Very sticky and stinky

OOFA! Way past 50 but heavenly trichies!!! Banger plant Burk and thanks for the shout out earlier also...f em....

And thanks to Shed and Azi for the feed of numbers. I'm with @TorturedSoul on this one lmao I lost that floppy with my dial up modem.... thank God I have you two floating about on this page cause I'd be flipping through my Encyclopedia Britannica for hopefully some earlier information regarding LWA equations via petioles and protractor

I wish I was droughting soon....but we will have 6 plants to run through soon enough!

 

[Mlburk1]

Lights out tonight for 36 then chop time

 

[scottreid1966]

Nice pics, sweet trichones on those, M!
Quick question: Why do you put them in the dark before before chop. I have 3 indoors going and am unfamiliar with that tecnique.

 

[Krissi Carbone]

Nice pics, sweet trichones on those, M!
Quick question: Why do you put them in the dark before before chop. I have 3 indoors going and am unfamiliar with that tecnique.

Aaaah the dark debate. It is hypothesized that it helps to further increase trichome productivity for a more caked on final product. Honestly, i havent seen a difference in anything other than 72 hours of dark and even that i question if it is just my eyes playing tricks. I put some in the dark and some I do not. Some people swear by it Scott so it's worth a shot

Lights out tonight for 36 then chop time

Ooooo buddy!!!! Absolutely FANTASTIC!!! SO STOKED FOR YOU!! GO BURK GO BURK!

 

[TorturedSoul]

Nice pics, sweet trichones on those, M!
Quick question: Why do you put them in the dark before before chop. I have 3 indoors going and am unfamiliar with that tecnique.

A newbie did it, then posted a picture of bud and stated "wow, me stonED." 15,000 other newbies saw the picture, read the text, decided A plus a turkey sandwich equals a gold nugget (because why wouldn't it ), and started doing the same thing.

I also have it on good authority that standing with one foot in the air while you harvest will enable you to harvest some really potent bud^(*).

It's just another example of doing something that doesn't help, but also doesn't really hurt anything. All you lose is three days of plant development. Or you can look at it as having to wait three extra days to harvest. Depending, of course, on whether you'd have continued to give the plants light-energy... or cut them down.

Either way, it's not going to magically cause trichomes to appear. Plus, trichomes are like people in that, even if one pops out today, it's not going to do so in its mature state.

Do it, if you want. It's like carrying a rabbit's foot (which is probably not actually from a real rabbit, at this point). Harmless, more or less, and some people are somehow comforted when they do so.

A lot of people have taken to calling crap like that "bro science." Which is a shame, and an insult to science, because it isn't.

No, I can't remember which foot. Try both .










^(*)If, that is, you have just finished growing some really potent bud.

 

[423]

Recently I've tried back to back runs of the same clone, grown under the same lights and same place, one grow following the other and adding "droughting" to the flowering water.
I did see an increase in the the by 3% with the Purpl Scientific test. Not conclusive at all even for broscience.. My environment and other factors make back to back grows tough to compare with numbers so close. So my idea, side by side with good data.
I have two flowering right now that could work, same cut both started, transplanted, and transfered to 12/12 at the same time.
Time is tight for me now but I'll try it and keep track. It's for science. And now I want a turkey sandwich. With bacon. I just ate but now I'm hungry.

 

[StoneOtter]

My thought is to clone multiple times, the same plant, and see how they are each differently affected by the drought. We could be on to a really interesting super crop if we keep exposing the same plant to drought over and over again and having them get stronger because of it.

Very interesting Krissi! I wondered why The Rev (soil/seed guy) keeps saying clones are better than seed plants and always grow clones if possible. Well with that thought what about seeds from a droughted plant? I wonder. Anyway, I have a tentfull coming up in a couple of weeks! I can't wait!

 

[Braddah Waiheesohai]

A newbie did it, then posted a picture of bud and stated "wow, me stonED." 15,000 other newbies saw the picture, read the text, decided A plus a turkey sandwich equals a gold nugget (because why wouldn't it ), and started doing the same thing.

I also have it on good authority that standing with one foot in the air while you harvest will enable you to harvest some really potent bud^(*).

It's just another example of doing something that doesn't help, but also doesn't really hurt anything. All you lose is three days of plant development. Or you can look at it as having to wait three extra days to harvest. Depending, of course, on whether you'd have continued to give the plants light-energy... or cut them down.

Either way, it's not going to magically cause trichomes to appear. Plus, trichomes are like people in that, even if one pops out today, it's not going to do so in its mature state.

Do it, if you want. It's like carrying a rabbit's foot (which is probably not actually from a real rabbit, at this point). Harmless, more or less, and some people are somehow comforted when they do so.

A lot of people have taken to calling crap like that "bro science." Which is a shame, and an insult to science, because it isn't.

No, I can't remember which foot. Try both .










^(*)If, that is, you have just finished growing some really potent bud.

There are several studies that show a 48-72 hour dark period can significantly alter the terpene profile of some cultivars. It's less about trichomes, and more about how it effects the final taste/smell/entourage effects.

Important notes: Some cultivars means it may not do anything for some strains/phenos.

*Definitely both feet. If you can harvest without touching the ground, that's some zero-gravity dank.

 

[TorturedSoul]

... or you find yourself sitting on the floor.

That may be, in regards to what your stated about the terpene content; IDK. I would be interested in reading those studies, if you'd be kind enough to post the links. I was skimming an article about trichomes, their cannabinoid content, and some of the various types of trichomes the other day, and must have failed to bookmark it. All I can remember is that "I think I was using my laptop at the time" (uh...), so it might have been in Windows OS because that's been what I've been booting on it more often than not, for some reason (laziness? it uses one of its camera lenses and a pair of blinking red lights to decide who I am, and then log me in, lol), so... probably Chrome web browser. But that's as far as I've gotten. Clearing history (etc.) regularly is, sometimes, inconvenient.

I'm digesting a study now about how varying the ratio of NH₄/NO₃ affects many things, including yield, cannabinoid content, terpene content, et cetera. (The ratio of ammonium to nitrate nitrogen in one's nutrients.) Not related to the topic at hand, but I'll include the link because it's an example of a well-written article (IMHO). They described the conditions very well, including all relevant details, provided a good summary and then went on to explain in detail, etc. Plus... it seems like it's useful information, lol. And the website (Frontiers in Plant Science) is a useful one to delve into now and then.

Nitrogen Source Matters: High NH4/NO3 Ratio Reduces Cannabinoids, Terpenoids, and Yield in Medical Cannabis

Frontiers | Nitrogen Source Matters: High NH4/NO3 Ratio Reduces Cannabinoids, Terpenoids, and Yield in Medical Cannabis

The N form supplied to the plant, ammonium (NH4+) or nitrate (NO3–), is a major factor determining the impact of N nutrition on plant function and metabolic ...

www.frontiersin.org

The kind of thing we don't learn if we merely follow a manufacturer's (or anyone's) recommended nutrient recipe, and assume that "good enough" actually is.

 

[Mlburk1]

Just as a courious thought does anyone here wash their plant after cutting before hanging to dry ? I do and believe in it , takes a lot of crap off that you really don’t see !

 

[Azimuth]

I do. And for the reason you state.

 

[InTheShed]

I'm digesting a study now about how varying the ratio of NH4/NO3 affects many things, including yield, cannabinoid content, terpene content, et cetera.

Great link TS! Here was their conclusion:

"The increase in NH4 supply generally caused an adverse response: Secondary metabolite production, inflorescence yield, plant height, inflorescence length, transpiration and photosynthesis rates, stomatal conductance, and chlorophyll content, were highest under NO3 nutrition when no NH4 was supplied. Ratios of 10–30% NH4 did not substantially impair secondary metabolism and plant function, but produced smaller inflorescences and lower inflorescence yield compared with only NO3 nutrition."

The only downside to running high nitrate mixes is that it will eventually raise the pH of the soil/soilless media. Much more slowly in soil but in soilless (peat-based) it can become a problem if you veg a long time. It's the reason I've switched back to soil.

@farside05 might be interested in that article.

for finding it!

Just as a courious thought does anyone here wash their plant after cutting before hanging to dry ? I do and believe in it , takes a lot of crap off that you really don’t see !

I do too, every single time. Citric acid and baking soda in one bucket, plain water in the other.

 

[StoneOtter]

Just as a courious thought does anyone here wash their plant after cutting before hanging to dry ? I do and believe in it , takes a lot of crap off that you really don’t see !

I do all outdoor grown. My indoor no.

 

[TorturedSoul]

Great link TS! Here was their conclusion:

"The increase in NH4 supply generally caused an adverse response: Secondary metabolite production, inflorescence yield, plant height, inflorescence length, transpiration and photosynthesis rates, stomatal conductance, and chlorophyll content, were highest under NO3 nutrition when no NH4 was supplied. Ratios of 10–30% NH4 did not substantially impair secondary metabolism and plant function, but produced smaller inflorescences and lower inflorescence yield compared with only NO3 nutrition."

One of the reasons why I'm not a fan of Miracle-Gro.

 

[Mlburk1]

Just cut and washed very pleased! Smells wonderful Happy Father’s Day to me

 

[Azimuth]

Noice!