Yellowing followed by necrosis

So first and foremost I want to say - I don't believe this is a N deficiency. I added seabird guano as an amendment last week, about 2tbsp worth. I'm all organic so I can't imagine PH is a problem (It is always within 6.2-7.0 anyways.

As I understand it, typically Nitrogen def's start from the bottom and move up, in this case, it's pretty much all over indiscriminate of height. I'm only 4 1/2 weeks into flowering so at this point I think one of my plants is boned, but I'm hoping to salvage the other two that are healthier. Yellowing starts on the outside edges of the leaves and moves inward rapidly followed by necrosis. It sounds like a Nitrogen def to me, but I'm feeding it high strength teas weekly of Earth Juice.

Here's some pictures, please tell me I'm missing something.

Id flush its an immobile nutrient problem. or its just p def since there in flower how many weeks is that flower?

Are you sure the roots are healthy? Since your organic, I wouldn't expect any sort of root rot, but that's what it looks like to me. Maybe a root-based pest?

I would agree that it looks like a def/lockout problem being only 4 1/2 weeks in. I would say N def, maybe not supplying enough as she maybe super hungry but take with a pinch please as I am no expert....

Why so many teas? Over watering is a problem you have to.

Quit shoving stuff down its throat. Teas aren't meant to be used that much.

Can you provide the recipe for the soil you are using or brand?

I would say P deficiency. From either a lock out or pH problem. The lockout could be from all the teas and the pH problem from staying too wet.

I dont know about organics because ive never done , but it really does look like N deff.
Looks like anything about 7.0 locks out N.
I dont know if that matters in organic thoooooo

I looked at first pix only and that is P def, They will yellow/spot/curl/red-purple between veins/fall off..
Too much calcium, PH, sheety fert program will cause this lockout. Hydro never has this issue. Soils do.

P is mobile as well so it moves up.

"
Signs of a potassium deficiency
Leaf Color:
– Brown or burnt leaf edges
– Pale colored leaves
– Yellowing of the lower, older leaves
– Dark, brown spots
– Burnt leaf tips

Leaf Symptoms:
– Death of leaf tips
– Spots on leaves
– Older leaves falling off

Plant Symptoms:
– Slowed growth
– Twisted and abnormal growth
– Curling leaves (under or upward)
– Stretching – characterized by large spaces between nodes
– Plant is too tall
– Buds not getting fatter

Potassium deficiencies often resemble iron deficiencies. The tell-tale way of knowing that a potassium deficiency is a problem is by the curling leaves, the burnt edges, and leaf death.
"

PH 6.2-7.0 in soil why?

Cx2H said:

I looked at first pix only and that is P def, They will yellow/spot/curl/red-purple between veins/fall off..
Too much calcium, PH, sheety fert program will cause this lockout. Hydro never has this issue. Soils do.

P is mobile as well so it moves up.

"
Signs of a potassium deficiency
Leaf Color:
– Brown or burnt leaf edges
– Pale colored leaves
– Yellowing of the lower, older leaves
– Dark, brown spots
– Burnt leaf tips

Leaf Symptoms:
– Death of leaf tips
– Spots on leaves
– Older leaves falling off

Plant Symptoms:
– Slowed growth
– Twisted and abnormal growth
– Curling leaves (under or upward)
– Stretching – characterized by large spaces between nodes
– Plant is too tall
– Buds not getting fatter

Potassium deficiencies often resemble iron deficiencies. The tell-tale way of knowing that a potassium deficiency is a problem is by the curling leaves, the burnt edges, and leaf death.
"

PH 6.2-7.0 in soil why?

Click to expand...

I usually don't worry about pH in soil, especially organics as decaying organic compounds create ions that buffer pH.

In soil pH also swings as it dries. That allows proper nutrient uptake.


I didn't direct this at you. Just adding to your statement.

whitebb2727 said:

Why so many teas? Over watering is a problem you have to.

Quit shoving stuff down its throat. Teas aren't meant to be used that much.

Can you provide the recipe for the soil you are using or brand?

I would say P deficiency. From either a lock out or pH problem. The lockout could be from all the teas and the pH problem from staying too wet.

Click to expand...

It's basically a pro mix / roots organic 40/60 amended with azomite, dolomite lime, rock phosphate, humic acid, epsom salt, and some extra perlite for drainage. As I understand it, Earth Juice is meant to be used weekly. It's basically a organic liquid fertilizer than is more effective when aerated into a tea mix. I'm not sure if you're correct on that, based on my understanding and schedules provided by those who have used Earth Juice exclusively.

I also typically don't water until the leaves droop, but I will let them dry out further.

Cx2H said:

I looked at first pix only and that is P def, They will yellow/spot/curl/red-purple between veins/fall off..
Too much calcium, PH, sheety fert program will cause this lockout. Hydro never has this issue. Soils do.

P is mobile as well so it moves up.

"
Signs of a potassium deficiency
Leaf Color:
– Brown or burnt leaf edges
– Pale colored leaves
– Yellowing of the lower, older leaves
– Dark, brown spots
– Burnt leaf tips

Leaf Symptoms:
– Death of leaf tips
– Spots on leaves
– Older leaves falling off

Plant Symptoms:
– Slowed growth
– Twisted and abnormal growth
– Curling leaves (under or upward)
– Stretching – characterized by large spaces between nodes
– Plant is too tall
– Buds not getting fatter

Potassium deficiencies often resemble iron deficiencies. The tell-tale way of knowing that a potassium deficiency is a problem is by the curling leaves, the burnt edges, and leaf death.
"

PH 6.2-7.0 in soil why?

Click to expand...

I think you're right that it's a potassium deficiency, which seems odd to me given potassium's abundant availability in such PH ranges. My PH of the teas fluctuates, and I've been made to believe that PH in organics isn't necessarily very important. Maybe that's dead wrong, but there should be plenty of K available. 10ml of molasses, 6ml of Earth Juice Meta-K per gallon along with 15ml of Grow and Bloom, 5ml of Micro and Catalyst.

somebody1701 said:

Are you sure the roots are healthy? Since your organic, I wouldn't expect any sort of root rot, but that's what it looks like to me. Maybe a root-based pest?

Click to expand...

Water uptake seems to be awfully slow the past week compared to the last several weeks. I can't imagine it's a pest as I haven't seen any signs other than a few fungus gnats in my veg tent.

Thanks for all the replies guys. My next bunch go into flower in 4 weeks so I am definitely here to further my understanding, so I appreciate all the input greatly. My hope is to do what I can on this grow and prevent it on the next one.

Many thanks.

Why use all that? Build a good soil and water. Are you using molasses every water?

I would look into this thread.
https://www.rollitup.org/t/recycled-organic-living-soil-rols-and-no-till-thread.636057/

Ditch the bottles and build a good soil.

OK hmm... I'm wondering why no one mentioned possible nitrogen burn/toxicity, given all he's feeding and the apparent (if somewhat hard to tell) clawing I think I'm seeing and how dark some of the others look.

thewanderingjack said:

OK hmm... I'm wondering why no one mentioned possible nitrogen burn/toxicity, given all he's feeding and the apparent (if somewhat hard to tell) clawing I think I'm seeing and how dark some of the others look.

Click to expand...

Yea, I'm starting to think lock out.

Sticking with the P call. That is COCO you can't run 7.0 PH in it more than a few days or it will lock out. 4 weeks into flower P shows up. People got soil charts up there ....

If you're running coco, I'd do a flush with 1 tsp vinegar, 1 tsp molasses, and 1 tsp epsom per gallon and then start feeding with every watering after that with a good organic fert like GO Bloom and CaMg+.

Cx2H said:

Sticking with the P call. That is COCO you can't run 7.0 PH in it more than a few days or it will lock out. 4 weeks into flower P shows up. People got soil charts up there ....

Click to expand...

You're right, I didn't realize roots was a coco base. Given the damage done already, is there any saving the worst looking one?

What's your recommendation doctor?

somebody1701 said:

If you're running coco, I'd do a flush with 1 tsp vinegar, 1 tsp molasses, and 1 tsp epsom per gallon and then start feeding with every watering after that with a good organic fert like GO Bloom and CaMg+.

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Earth Juice is a great organic fertilizer. It just has PH problems, but I've had superb results in the past. I'm a little hesitant to do a flush seeing as they're having problems with water uptake.

We need @Dr. Who on this one. Pretty sure he has seen this one. I can't find posts on it though, so I'll just ring him in if he would like too jump in.

gogogogogogo said:

Earth Juice is a great organic fertilizer. It just has PH problems

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Sorry but if your organic fert has PH problems, I certainly wouldn't call it "great."

Cx2H said:

We need @Dr. Who on this one. Pretty sure he has seen this one. I can't find posts on it though, so I'll just ring him in if he would like too jump in.

Click to expand...

Where's the Tardis when you need it.

What's the PH and PPM of your water before you put anything in it?