Nitrogen tox/def ROOT ROT?

J

JDMase

Well-Known Member
Here's Kings kush, showing some real unhappiness. I had the dark green leaves for a week and had leached with low nutes, a few days later flushed with just ph tap water, still no improvements. As of two days ago the bottom leaves have begun to yellow. Im unsure if ive gone from nitrogen tox to def or whether I have root rot?


It's even affecting my other plants now. I switched to bloom nutes as I was thinking I had nitrogen toxicity on all my plants.

I am using mykos and azos with every water as of yesterday. Up until then I had only used it as a direct root innoculant when up potting.
 
Bugeye

Bugeye

Well-Known Member
You have a curved leaf structure that suggests not enough O2, which could definitely be a root rot issue. I don't think you are deficient on nitrogen, it is likely locked out from nutrient antagonism (too much K, possibly). Reference Mulder's chart below.

 
SouthCross

SouthCross

Well-Known Member
Lol, I have two different plants doing the exact same thing. 9th week. I made mine do it by cutting the nitrogen to zero and added nothing but GH flora series Bloom. 6ml to gallon..

It happened quick. Next watering I included 1ml of the Micro. It slowed the colors changing. Any leaf that went completely gold, I gently pluck them off. Lots of the smaller ones had the nitrogen sucked out first. With some of them gone and out of the way. The lower branches cleaned up a lot. Some of the bigger fan leaves took about a five~seven days to turn. A few of them were blocking lower buds. Not no more.
 
J

JDMase

Well-Known Member
Bugeye said:
You have a curved leaf structure that suggests not enough O2, which could definitely be a root rot issue. I don't think you are deficient on nitrogen, it is likely locked out from nutrient antagonism (too much K, possibly). Reference Mulder's chart below.

Click to expand...
Excellent graph, I have hydro guard on order to treat the root rot issue. Is there anything else I ought to do?
 
J

JDMase

Well-Known Member
SouthCross said:
Lol, I have two different plants doing the exact same thing. 9th week. I made mine do it by cutting the nitrogen to zero and added nothing but GH flora series Bloom. 6ml to gallon..

It happened quick. Next watering I included 1ml of the Micro. It slowed the colors changing. Any leaf that went completely gold, I gently pluck them off. Lots of the smaller ones had the nitrogen sucked out first. With some of them gone and out of the way. The lower branches cleaned up a lot. Some of the bigger fan leaves took about a five~seven days to turn. A few of them were blocking lower buds. Not no more.
Click to expand...
Doesn't floranova bloom have some nitrogen though?

I don't have micro because im running floranova, what should I do, do you think?
 
whitebb2727

whitebb2727

Well-Known Member
What are you growing in? Boxes? Is there anything under those boxes? How big are the boxes?

Looks like a combo of root bound, chronic under water and looks to need N and possibly a micro nutrient problem.
 
J

JDMase

Well-Known Member
whitebb2727 said:
What are you growing in? Boxes? Is there anything under those boxes? How big are the boxes?

Looks like a combo of root bound, chronic under water and looks to need N and possibly a micro nutrient problem.
Click to expand...
They're 6" Rockwool cubes. 3" cubes atop that. Yes they are very root bound. Maybe I'll get a picture later to show you once lights are on. The only issue with a vert grow is that it's difficult to thoroughly check for root rot
 
whitebb2727

whitebb2727

Well-Known Member
JDMase said:
They're 6" Rockwool cubes. 3" cubes atop that. Yes they are very root bound. Maybe I'll get a picture later to show you once lights are on. The only issue with a vert grow is that it's difficult to thoroughly check for root rot
Click to expand...
That's the problem. There is no way for adequate water or nutrient uptake.

You need to get them some more room.

It looks like the cubes are sitting on buckets or something.

Remove what they are sitting on and put pots under them or something.

There is no way you will finish like that.
 
J

JDMase

Well-Known Member
whitebb2727 said:
That's the problem. There is no way for adequate water or nutrient uptake.

You need to get them some more room.

It looks like the cubes are sitting on buckets or something.

Remove what they are sitting on and put pots under them or something.

There is no way you will finish like that.
Click to expand...
They're sitting on trays, ive got some rockwool croutons and pots but they're black and im aware that black pots can increase the root zone temps. I don't want to make the issue worse.
 
whitebb2727

whitebb2727

Well-Known Member
JDMase said:
They're sitting on trays, ive got some rockwool croutons and pots but they're black and im aware that black pots can increase the root zone temps. I don't want to make the issue worse.
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Dude the black pots are fine.

Those plants look tied into a trellis. Tear the boxes off those cubes and bust them up a bit. Tilt a large pot or 5 gallon bucket and get it under and around the cubes. Back fill with a good soil or other medium.

You need a lot more room than 6 inch cubes.
 
J

JDMase

Well-Known Member
whitebb2727 said:
Dude the black pots are fine.

Those plants look tied into a trellis. Tear the boxes off those cubes and bust them up a bit. Tilt a large pot or 5 gallon bucket and get it under and around the cubes. Back fill with a good soil or other medium.

You need a lot more room than 6 inch cubes.
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Yeah I think you're right, I had the same thought recently, I think I'll cut the plastic off the sides and let my roots expand into them, I want to flip as soon as possible but not until they're recovered. I'll post pictures in my journal or my tbread in the vert section.

@LandAndHeir uses 6" cubes solely, I wonder if ive over vegged and need more medium? Would love your input.
 
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whitebb2727

whitebb2727

Well-Known Member
JDMase said:
Yeah I think you're right, I had the same thought recently, I think I'll cube the plastic off the sides and let my roots expand into them, I want to flip as soon as possible but not until they're recovered. I'll post pictures in my journal or my tbread in the vert section.

@LandAndHeir uses 6" cubes solely, I wonder if ive over vegged and need more medium?
Click to expand...
I don't have much experience with cubes. I do know that with 1 gallon grow bags that are 6 x6 x8 inches they are good for small single cola plants straight from 12/12.

Figure a gallon per month of growth.
 
J

JDMase

Well-Known Member
image.jpg image.jpg
So I had a look at the bottoms of my cubes.. This is my grapefruit krush, the most root bound, no symptoms showing like the kings kush, but the roots are very similar in colour. Is this root rot or just the staining from nutrients (floranova) and maybe the mykos too? They always seem to leave a brown residue too.
 
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