Nitrogen toxicity? Help ya girl out, plz.

ghostgirl00 · Aug 25, 2021

First time growing autos. Medium is coco with worm castings, dr earth dry amendments (444 and 394). PH 6.5. Temp 74-79. They are exactly 5 weeks old. I noticed the problem over the last few days. They just received a feeding yesterday with more 394, very little 444 and worm castings. I assume if it was a nute problem there would have been signs earlier since the only feeding took place when they were planted 5 weeks ago. Like I said, I noticed the problem a few days before I fed them again, so the problem wouldn't be new nutrients. and gave them a feeding yesterday since they were starting to flower. Thought about adding more coco to introduce some microorganisms. Anyone offer advice??? Nitrogen toxicity? Watering issue?

2Bad · Aug 25, 2021

Whats the ppm/ec? The ph should be between 5.7-6.3 6.5 is a tad bit high.

ComfortablyNumb · Aug 25, 2021

They look great! Just bring your pH to 5.5 in coco.

2Bad · Aug 25, 2021

Whats the watering schedule like?

ghostgirl00 · Aug 26, 2021

2Bad said:
Whats the ppm/ec? The ph should be between 5.7-6.3 6.5 is a tad bit high.

the soil ph is about 6.8 so I definitley need to get that lowered.

ghostgirl00 · Aug 26, 2021

2Bad said:
Whats the watering schedule like?

I water when the soil feels dried about about 2 inches in. But I got a water meter probe yesterday and the soil is still reading "wet" and they were watered 2 days ago. When growing in coco is it still advised to water til runoff?

ghostgirl00 · Aug 26, 2021

ComfortablyNumb said:
They look great! Just bring your pH to 5.5 in coco.

my soil ph is about 6.8 so that is pretty high for coco? Sorry, first time using coco, autos and dry amendments.

skinnypuppy · Aug 26, 2021

In my opinion they look over watered (bloated leaves tips down) lift the pots if they are heavy they don't need watered. Watering and water uptake really depends on a number of different factors Light being a major one.

PauliBhoy · Aug 26, 2021

ghostgirl00 said:
my soil ph is about 6.8 so that is pretty high for coco? Sorry, first time using coco, autos and dry amendments.

Yeah it is a bit high. Part of the issue is your water pH, but also did you use any lime/dolomite in your mix?

FATAL · Aug 26, 2021

Calcium deficiency. Easiest way to get more is to raise humidity and add ful-power.

https://content.ces.ncsu.edu/calcium-deficiency-of-carinata

PauliBhoy · Aug 26, 2021

FATAL said:
Calcium deficiency. Easiest way to get more is to raise humidity and add ful-power.

https://content.ces.ncsu.edu/calcium-deficiency-of-carinata

How does humidity or humic acid aid in Calcium uptake? Humic is well documented in increasing metal (iron, zinc, etc.) uptake but not calcium from the roots.

https://www.researchgate.net/profile/Mustafa-Kaplan-8/publication/233037232_Investigation_of_Effects_on_Nutrient_Uptake_of_Humic_Acid_Applications_of_Different_Forms_to_Strawberry_Plant/links/5c324b3092851c22a36054fa/Investigation-of-Effects-on-Nutrient-Uptake-of-Humic-Acid-Applications-of-Different-Forms-to-Strawberry-Plant.pdf

However Calcium can be applied as a foliar spray with or without humic/fulvic acid to increase uptake and address deficiency.

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.736.1405&rep=rep1&type=pdf

ghostgirl00 said:
Anyone offer advice?

If it's not pH or overwatering it looks like early Mg deficiency to me.

ComfortablyNumb · Aug 26, 2021

ghostgirl00 said:
I water when the soil feels dried about about 2 inches in. But I got a water meter probe yesterday and the soil is still reading "wet" and they were watered 2 days ago. When growing in coco is it still advised to water til runoff?

What makes you think something is wrong?

2Bad · Aug 26, 2021

With coco coir you need to water in at least once a day twice a day even better that's probably the cause too much dryback will spike your e.c. Do your ph at 5.9. You want about 10-20 percent of what your putting in to the plant to runoff at the bottom EVERYtime you water. You cannot over water coco 99 percent of the time.

2Bad · Aug 26, 2021

ComfortablyNumb said:
What makes you think something is wrong?

That's true. It might not be in trouble yet but your watering habits if changed will definitely improve your plants life. Updated pics?

ghostgirl00 · Aug 26, 2021

PauliBhoy said:
Yeah it is a bit high. Part of the issue is your water pH, but also did you use any lime/dolomite in your mix?

I did not. Just the worm castings and dry amendments. What are the benefits of lime/dolomite?

ghostgirl00 · Aug 26, 2021

2Bad said:
That's true. It might not be in trouble yet but your watering habits if changed will definitely improve your plants life. Updated pics?

ghostgirl00 · Aug 26, 2021

This was them this morning.

2Bad · Aug 26, 2021

Looking real good. What's up with the vents being closed and the duct by the plant? just curious is alll

PauliBhoy · Aug 26, 2021

ghostgirl00 said:
I did not. Just the worm castings and dry amendments. What are the benefits of lime/dolomite?

It is a calcium source that will raise the pH of your media.

clinch · Aug 26, 2021

2Bad said:
Looking real good. What's up with the vents being closed and the duct by the plant? just curious is alll

looks like a passive intake duct.

Nitrogen toxicity? Help ya girl out, plz.

Nitrogen toxicity? Help ya girl out, plz.

ghostgirl00

2Bad

ComfortablyNumb

2Bad

ghostgirl00

ghostgirl00

ghostgirl00

skinnypuppy

PauliBhoy

FATAL

PauliBhoy

ComfortablyNumb

2Bad

2Bad

ghostgirl00

ghostgirl00

ghostgirl00

2Bad

PauliBhoy

clinch

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