Deficiencies During Late Flowering

dwc420letsgo

Well-Known Member
.
 

RockStonedJesus

Active Member
Some people wash their buds after harvest to remove bugs/dust/contam. Never had thrips but had a bad fungus gnat infestation and even that grossed me out to not smoke them. I guess as a last resort do a bud wash and then try making ice water hash out of it… my $.02
For sure man, totally understand. To be honest, I'm not too fussed. I've had serious issues in the past, spider mites and other pests, never had an issue smoking them.. HAHA!

I just want to nuke the bastards so they don't do any more damage - I want to keep these babies flowering for at least another week or two, the colas just keep growing each day, so I want to push it. But I don't want these bastards to destroy the plants further.

If anyone has input regarding ozone, please let me know - I might give it a go and nuke the bastards for an hour or two and see how the plants react.
 

Drop That Sound

Well-Known Member
Not a whole lot you can do this late in the game, unfortunately. Not without contaminating the buds. Pointless to do a root drench or whatever at this point if you ask me, because they are all over the plants hiding in different life cycle stages that can last quite awhile anyway. Even if you kill em, you'll be smokin em ;).

They don't really attack the main flowers all that much appearance wise, but they might pepper there way up into some of the sugar leaves. Its like they come out and have feeding frenzies all at once too, and do a lot of damage when your not looking. Sometimes the bigger adult flyers (probably what you seen) crawl up into buds and die. Little $%&^ers can get stuck in the trichromes trying to lay eggs, leading to little mold\bud rot spots here and there, on top of infecting the plant\roots with other diseases\pathogens that have you chasing deficiencies, etc... I really dislike thrips. Its the main nuisance pest that constantly attacks my grows year after year now, lol. They're everywhere around outside now days it seems, so a never ending battle?

They are hard to see until its a problem too. Not so much a problem with dwc plants & way more manageable with no grow mediums IME. Or when I'm vigilantly ocd the whole time with IPM, and also bomb the heck out of the place (not in my house of course) with no pest strips before starting over fresh.. Some years are worse too, and there are multiple breeds of them all over the world.. 1000's if i'm not mistaken.. Some possibly becoming resistant to some pesticides I've heard.. Yikes!
 

RockStonedJesus

Active Member
Not a whole lot you can do this late in the game, unfortunately. Not without contaminating the buds. Pointless to do a root drench or whatever at this point if you ask me, because they are all over the plants hiding in different life cycle stages that can last quite awhile anyway. Even if you kill em, you'll be smokin em ;).

They don't really attack the main flowers all that much appearance wise, but they might pepper there way up into some of the sugar leaves. Its like they come out and have feeding frenzies all at once too, and do a lot of damage when your not looking. Sometimes the bigger adult flyers (probably what you seen) crawl up into buds and die. Little $%&^ers can get stuck in the trichromes trying to lay eggs, leading to little mold\bud rot spots here and there, on top of infecting the plant\roots with other diseases\pathogens that have you chasing deficiencies, etc... I really dislike thrips. Its the main nuisance pest that constantly attacks my grows year after year now, lol. They're everywhere around outside now days it seems, so a never ending battle?

They are hard to see until its a problem too. Not so much a problem with dwc plants & way more manageable with no grow mediums IME. Or when I'm vigilantly ocd the whole time with IPM, and also bomb the heck out of the place (not in my house of course) with no pest strips before starting over fresh.. Some years are worse too, and there are multiple breeds of them all over the world.. 1000's if i'm not mistaken.. Some possibly becoming resistant to some pesticides I've heard.. Yikes!
Yeah that's exactly what I was thinking. It's far too late in the game now for me.

I'm still really curious regarding ozone. Have you read anything on ozone? I mean, I'm this far in, the thrips are taking over as each day passes (literally I can see the infestation spreading so quickly), I am thinking of nuking the grow space for an hour or two. I really want to hear some input on this, I am genuinely intrigued.

I can either spend $100 on spray or $100 on a half-decent ozone generator - at least the latter I can use indefinitely.
 

RockStonedJesus

Active Member
I can't tell you much about ozone working to kill thrips, nor can I recommend it.. but you really don't wanna be spraying your buds with anything.
I am totally onboard and definitely WON'T be using any spray. The infestation seems limited to only the bigger fan leaves. If I time it right, I should still end with a decent harvest.

I bought an ozone generator and I'll keep everyone posted. I'm going to pickup one tomorrow from my friend to test in the meantime - we'll see how it goes.

I did put up some yellow sticky pads around the grow tent, under the plants, above the plants, between the plants. Hopefully the fuckers get stuck to the pads!

Death to the thrips! :wall::eyesmoke:
 

RockStonedJesus

Active Member
high co2 levels will kill critters too
Sure will! However Mr ChatGPT says I will need at least 3kg of CO2 at consistent levels to kill off pests over 24 hours - cost wise, this doesn't seem reasonable. Maybe GPT is wrong & the PPM of CO2 doesn't need to be as high - some study I read said 30% CO2 levels over 24 hours kills 100% of thrips - tho 30% CO2, over 24 hours surely will kill the plants also ...

So the only other thing I could think to is ozone.
 

rkymtnman

Well-Known Member
Sure will! However Mr ChatGPT says I will need at least 3kg of CO2 at consistent levels to kill off pests over 24 hours - cost wise, this doesn't seem reasonable. Maybe GPT is wrong & the PPM of CO2 doesn't need to be as high - some study I read said 30% CO2 levels over 24 hours kills 100% of thrips - tho 30% CO2, over 24 hours surely will kill the plants also ...

So the only other thing I could think to is ozone.
i read about it when i had spider mites awhile back. it was either 3000 or 5000ppms but i don't remember for how long.

ozone should kill them too but i've never heard of it.

guess you are our guinea pig on this one!
 

Drop That Sound

Well-Known Member
I am totally onboard and definitely WON'T be using any spray. The infestation seems limited to only the bigger fan leaves. If I time it right, I should still end with a decent harvest.

I bought an ozone generator and I'll keep everyone posted. I'm going to pickup one tomorrow from my friend to test in the meantime - we'll see how it goes.

I did put up some yellow sticky pads around the grow tent, under the plants, above the plants, between the plants. Hopefully the fuckers get stuck to the pads!

Death to the thrips! :wall::eyesmoke:
Be careful and let us know if it works, or if you find more info about it.

I'm currently renovating my whole op into clean room grade areas, with laminar flow hepa filtration in each space. Call me crazy, but I'm gonna add some kind of blowers that trigger when I open the door from outside too, so the swarm of usual bugs doesn't follow me into the grow every time.. All it takes is one flyer to come in and lay eggs. They're good at hiding too.
 

RockStonedJesus

Active Member
Be careful and let us know if it works, or if you find more info about it.

I'm currently renovating my whole op into clean room grade areas, with laminar flow hepa filtration in each space. Call me crazy, but I'm gonna add some kind of blowers that trigger when I open the door from outside too, so the swarm of usual bugs doesn't follow me into the grow every time.. All it takes is one flyer to come in and lay eggs. They're good at hiding too.
Crazy! Hehe. I've been fortunate, touch wood, I've had no serious outbreaks in this house. Except these freaking thrips! Oh well, it's all trial and error. I have hopes for the ozone - keep an eye on this space over the next couple of weeks, I'll definitely keep everyone informed.
 

MadBret

Member
Thrips suck, bro. I had to fight them several times outdoors and currently dealing with them, also. In my past experience, I used spinosad successfully. But that was during vegative growth. Good luck, bud. These little bastards can be a nightmare.
 

RockStonedJesus

Active Member
Also meant to add. Don't spray Neem oil on your flowers. That shit will make your buds taste disgusting and unsmokable ime.
For sure bro, definitely not spraying the flowers. I'll be testing ozone - hopefully that kills the bastards. I'll nuke the pricks till they're all dead. :P
 

Under the Radar

Well-Known Member
I used these earlier this year. Killed off all the thrips and disappeared.

 

RockStonedJesus

Active Member
Hey all - I've decided to harvest some of my flowers that were looking a little worse-for-wear.

I am really not certain that my issue is thrips, or an insect as a matter of fact.

There are absolutely no dead insects in or around the flowers, none on the leaves, and none under the leaves.

I am really thinking this is a deficiency of some sort... I'm really not confident this is thrips-related. I did nuke the room over-night for 10 hours with 2,000mg/H of ozone, which should have killed most organisms in the room.

I've got some more photos, amongst the others I've uploaded. Any chance this could indeed be a macro/micro nutrient deficiency or lockout of some sort? I was kind of leaning to possibly a boron deficiency?

Growing under LED's for reference, incase that chances anything.

I have upped my magnesium (sulphate) + calcium (nitrate), so I don't think it's a CalMag issue.
 

Attachments

Top