Nute burn! Been thru it before but not like this

So the lady who's grow I am helping with called me the other day about what appeared to be the start of nute burn. She had been feeding two teaspoons of Grow Big per gallon every four days for the past month, all good, but on Tuesday some rust colored spots started showing up. I went over to look, and that is exactly what I experienced in the past. I guess they suddenly had enough, and may be also flipping to flower and not needing as much N.

We ran gallons of water thru the pots, them some Sledgehammer, then more water. I know slight burn will end up frying the leaves even after flushing,mso we didn't expect the fucked up leaves to recover. She called earlier today and said the problem appears worse. Just left there after we ran some more water through.

Here are a few pics, they give you an idea of what most everything looks like. There are new yellow spots appearing, what was brown is turning white. I'm hoping what we are seeing is the results of the original damage and that they will recover. Anyone else dealt with this type of burn? Anything else we can do, or just er?

I'm concerned the yellowing means there is a deficiency now, but am hesitant to add anything at the moment. There was no yellowing at first, just the rust spots that spread and burned.



Crap give me a minute having issues with pics

fuck what a pain. ok here they are

I've never seen one burn in the middle before, usually it starts at the tips and works in. Hope some one has a solution for ya.

Phosphorous def.

hmmm thats odd i dont think its either one of those

to much p iron lock out

kind of looks like nutes splashed on them...

it's nute burn......

idk....looks like maybe a deficiency or some odd form off toxicity......I had rust spots in my organic garden, but nothing like that.....mine were from the edges and had a richer orange rust color instead of the light color in those pics......that looks extraordinary

Only thing used was big grow and compost tea. We did have something similar a few months back,mfigired it was a ph issue or cal mag. Adjusted the water and added a bit of cal mag and it went away. This began differently, although in both cases it started in the middle of the leaves. Here is a link to the original issue with pics. Which is what this is starting to look like. But this started with rust spots, typical nute burn

https://www.rollitup.org/marijuana-plant-problems/542032-leaf-problems-etc-so-far.html#post7662192

are the burns over all sides of the plant or only in that particular area? maybe i'm just stoned but, you don't have 2 different lights on each side of the spots with both reflectors coming down at the same angle concentrating the light on that spot do you?

FootballFirst said:

are the burns over all sides of the plant or only in that particular area? maybe i'm just stoned but, you don't have 2 different lights on each side of the spots with both reflectors coming down at the same angle concentrating the light on that spot do you?

Click to expand...

it's outdoor... so you're just stoned ...

Haha! So watcha think. Nitrogen burn or something else

lmfao......yeah he has both lights on right now.....The sun AND the moon

obijohn said:

Haha! So watcha think. Nitrogen burn or something else

Click to expand...

Doesn't look like nitro burn to me

Ph? Cal mag?

I got that symptom on a couple of my plants during the brunt of our heat wave. How are your temps?

90's are the average, with some days around 100. That's normal around here, and in past years weeks of temps around one hundred never bothered them, long as they were well watered.

I've always been told nute burn starts at the tips, but several years ago when I had a grow, I had a few rust areas start in the middle of the leaf. Flushed, backed off on grow big and started adjusting the ph when I did feed. Few months back this happened but wasn't as severe, just some yellowing and a bit of browning, again in the middle of the leaves. Added a bit of cal mag and started using ph down when watering, since the tap water tests blue. It went away, but I dunno exactly what it was. Should be plenty of cal mag in the tap water and food where it shouldn't need to be added

This time it started with the rust spots, and now the yellowing after flushing. So I don't know exactly what to do, supplement them with something, start compost tea again, or just use water. She thinks the yellowing will continue if she does nothing, I tend to agree. But doing or adding the wrong thing could make things worse

And some areas are bleaching white...never seen that with nute burn

Salt built-up