Interveinal necrosis & rust spots. Diagnosis help. Teros12 & Athena Pro Line

[Cannaburg]

Just speculating and maybe I missed it but do you think it could be IRON deficent?

 

[labomba]

View attachment 2036410

You can see light distance in this picture.
Sadly its a couple days old and not showing the necrosis.

Have you got to the bottom of it? I used to run into this in every grow I've had. Two things that made it better was increasing runoff to avoid any salt built up (using GH trio and calmag) and GH schedule tells me to cut the grow and bump bloom too abruptly early flower, I was advised (by a broscientist) to not cut the grow so much until mid flower when using led lights, I found my plants did better, but I cannot confirm how much each of these two changes helped it. These symptoms are something I want to understand better, anyone had it figured out?

I'm growing in Coco perlite but switching to pure Coco (had better results my last grow skipping the perlite)

 

[labomba]

Just speculating and maybe I missed it but do you think it could be IRON deficent?

Iron being a micro nutrient wouldn't these issues be more frequent across other people using the same schedule? Unless it's a deficiency more specific to the medium/light?

 

[Cannaburg]

Iron being a micro nutrient wouldn't these issues be more frequent across other people using the same schedule? Unless it's a deficiency more specific to the medium/light?

Ya I went back through this thread... I recant my statement of iron... it's from the lighting I think...led took me 1 or 2 grows to get it dialed in from switching hps.... showing signs like I did when I was dialing in my lights.... i really think it's plain old light stress

 

[Pilted]

I've had this problem, idk what it is. But this problem is everywhere seen post in hydro, soil, soilless, a wide range of nutes. Coming to a grow room near you soon.

It seems like when it hits your plant can't even handle 400 ppfd without burning the leaves off. It's light burn for sure, but I there is something else at play making your plants intolerant to light.

Good luck

 

[labomba]

I've had this problem, idk what it is. But this problem is everywhere seen post in hydro, soil, soilless, a wide range of nutes. Coming to a grow room near you soon.

It seems like when it hits your plant can't even handle 400 ppfd without burning the leaves off. It's light burn for sure, but I there is something else at play making your plants intolerant to light.

Good luck

I strongly disagree this is light burn since it's present in lower leaves that don't get any light, plus it's present when I'm using a 250w at half strength. What you could say it's an environmental imbalance but don't go blaming the lights


"making your plants intolerant to light." It's an absurd statement

 

[Pilted]

I strongly disagree this is light burn since it's present in lower leaves that don't get any light, plus it's present when I'm using a 250w at half strength. What you could say it's an environmental imbalance but don't go blaming the lights


"making your plants intolerant to light." It's an absurd statement

I have had this issue multiple times. I have seen multiple people have the same issue on multiple forums, your leaves are getting damaged from a lack of nutrients or something, idk. But this damage makes them burn easily from the light. What's the cause idk but light intolerant on a damaged leaf is far from absurd..

Don't trip chocolate chip, the next stage is worse, your buds going to stop growing. Seen so many of these post on this same exact issue, and none of them figured it out. Again I will wish you good luck because it's all I can do.

Will follow to see if maybe you are the one that can pen point it, I really hope you do.

 

[Pilted]

And just some.infonto help you out.

I have tried.

Flushing, makes it worse.

Reducing lights, still leaves burn off even at 400 ppfd.

Changed water source, didn't eliminate the issue.

Air rated the soil, no help

Then finally I switched nutrients, cha ching buds started growing again, but damaged leaves continued to burn off.

New grow on new nutrients so far no issue.

Take what you want out of that, my new grow not over so I might still have it but day 52 and no sign of it yet, the grows before I always got it between day 25-45 of flower.

My guess and it's just that a guess is it's a magnesium or a manganese deficiency from cheap nutrients using a a type of manganese or magnesium difficult to uptake by the plant.