Necking / scraping the stem before harvest

OldMedUser

Well-Known Member
The problem with this theory is that Cannabis doesn't produce THC as a defensive mechanism, like a pine tree produces sap, a stressed pot plant produces less THC.
Depends on the source of the stress. When reacting to insect attack cannabis will produce more resin in an attempt to protect itself. Using insect frass as a supplement is supposed to trigger that response as is the use of lobster/crab meal which contains chitin like insect's exoskeletons and makes the plants think it's besieged by bugs. I've used both and the plants of the same strain I'd grown without it did seem a lot more frosty and studies I've read about the phenomena seem to support it.

It's not just THC that is produced but the whole spectra of cannabinoids that make up the content of resin glands. More and larger resin glands equals higher yields of oil which 90% of the pot I grow ends up being used for. Doesn't seem to increase bud yield tho but it's the resin we want anyways.

:peace:
 

conor c

Well-Known Member
Id say this is mostly bs sure girdling was a thing with some things once upon a time but its long been proven nails through stalks and torturing it dont do it much good as others said drought stress at the right time is another matter as is the plants reaction to chitin those have a basis in fact
 

Phytoplankton

Well-Known Member
All this makes me wonder though. Terpenes would be a part of the plants defense mechanism. Did we lose skunk, as a result of not stressing them enough, or in the right way?


View attachment 5394526
It's a good article, but then they go and say something that leads me to believe they didn't do all their homework. The statement "and invite pollinators",throws the whole thing into question, as cannabis is a wind pollinated plant, and the author(s) should know that.
 

BarnBuster

Virtually Unknown Member
 

cage

Well-Known Member
It's a good article, but then they go and say something that leads me to believe they didn't do all their homework. The statement "and invite pollinators",throws the whole thing into question, as cannabis is a wind pollinated plant, and the author(s) should know that.
Terpenes have the effect of repelling pests and inviting pollinators.
The statement was about terpenes and not cannabis specific.

@Hollatchaboy Yea, I think there's plenty to crack there yet.
I've been fascinated about gene switches and epigenetics for awhile.

Like how several generations lifestyle before the specific invidual have effect on the invidual genome and how the switches are positioned.
Dynamic.Genomes.Series.1.1of2.Hidden.Treasures.in.our.DNA
Dynamic.Genomes.Series.1.2of2.The.DNA.Switch

Great documentary about those, gotta recommend.
And obviously the switches apply to humans, animals and plants.
 
I remember reading about putting nails or something through the stem some days before harvesting
to induce more resin production just before harvesting.
So is anyone done something similar with their stems before harvesting?

Just thought about pines and how their bark is peeled off either all the way or just leaving a strip of intact bark
to induce more resin/tar production.

edit: https://www.royalqueenseeds.com/blog-splitting-stems-should-you-take-a-knife-to-your-cannabis-plant-n1207
So something like that, please share experiences, thank you
A knife I did, a bit higher of the point where the plants goes underground. Also dropping temperature, that is done like a 20 hours before harvest cuz it is a hard stress training. When the plants is kike hours before harvest that helps to stress the lady and punch it to produce more resin to protect the flowers, more THC. But be careful with that stuff - you cant undo that and if you do that too early you will most likely get a hermie or a suffered plant
 

Hollatchaboy

Well-Known Member
Terpenes have the effect of repelling pests and inviting pollinators.
The statement was about terpenes and not cannabis specific.

@Hollatchaboy Yea, I think there's plenty to crack there yet.
I've been fascinated about gene switches and epigenetics for awhile.

Like how several generations lifestyle before the specific invidual have effect on the invidual genome and how the switches are positioned.
Dynamic.Genomes.Series.1.1of2.Hidden.Treasures.in.our.DNA
Dynamic.Genomes.Series.1.2of2.The.DNA.Switch

Great documentary about those, gotta recommend.
And obviously the switches apply to humans, animals and plants.
I'm not that scientific. My basic thinking, was wondering if certain cannabis strains put off a skunky smell, to ward off certain predators, like deer, or mice maybe?
 

cage

Well-Known Member
I'm not that scientific. My basic thinking, was wondering if certain cannabis strains put off a skunky smell, to ward off certain predators, like deer, or mice maybe?
I'm sure they do. Just a matter of knowing how and what to trigger in order to receive certain reactions.
I was thinking step ahead and about breeding.
So like if you have certain insect that triggers certain terpene production, you'd keep triggering that gene over several generations,
and that should make that gene go in "high alert mode" and should increase that type of terpene in the next generations.
This would be more about the gene switches than actual mutations and new genes/new mix of old genes.
 

Funkentelechy

Well-Known Member
Depends on the source of the stress. When reacting to insect attack cannabis will produce more resin in an attempt to protect itself. Using insect frass as a supplement is supposed to trigger that response as is the use of lobster/crab meal which contains chitin like insect's exoskeletons and makes the plants think it's besieged by bugs. I've used both and the plants of the same strain I'd grown without it did seem a lot more frosty and studies I've read about the phenomena seem to support it.

It's not just THC that is produced but the whole spectra of cannabinoids that make up the content of resin glands. More and larger resin glands equals higher yields of oil which 90% of the pot I grow ends up being used for. Doesn't seem to increase bud yield tho but it's the resin we want anyways.

:peace:
I agree about chitin, I've used insect frass, and it seems to have a positive effect. But, when it comes to plants actually being stressed by being damaged by insects, it's different. I've never heard anyone brag about a spider mite infestation improving potency or resin production. So maybe the key is to trigger a defense mechanism without actually physically damaging the plant. I also think that droughting at the right time can improve things.
 
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