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Mistaken Nutrient-Abundance with Nutrient-Deficiency?

Discobox

Discobox

Member
Hi there guys!

Having some troubles with growth lately. I feed the plants very early once, and then they apparently got burned. So I was very careful and stopped feeding. No I saw the plant crumbling again, but I can't explain the nutrient-burn this time since I wasn't feeding.

Now I read this article: https://www.rollitup.org/t/guide-to-nutrient-deficiency-or-toxicity.488004/
It says:
A deficiency of this causes yellowing of the leaves. its common during vegetative simply because the plant is using it up just as fast as your putting it in.
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This picture is from today: 2014-06-28 15.29.17.jpg

I'm worried for the yellowish leaves for quite some time now. Could it actually be, that the plant lacks nutrients right now?

What do you think: is this Nutrient-Abundance or Nutrient-Deficiency?

Thank you so much!
 
Discobox

Discobox

Member
Ok, I think i figuered it myself. Looks like zinc-deficiency caused by to high ph. Explains the slow growth as well.
 
Bugeye

Bugeye

Well-Known Member
Your plant is certainly deficient on nitrogen. The question is why? You can have deficiencies from nutrients not being in your soil to begin with, from your plant using them up, or from lockout which can be caused by bad ph or too much of something (google nutrient antagonism charts).

Your plant isn't big enough to have used up all the nutrients in a rich soil so I would have to guess you had a seedling mix soil or something weak in nutrients to start with. Is this right? If so, you need to start feeding her again.

In general, you never feed a plant in first two weeks if growing in soil. If it is a rich soil, you don't need to feed for first month. If it is a seedling soil you need to start mild feeding near end of first two weeks or transplant into richer soil. It is good to know your water ph and soil ph as well. You have to rule out a ph problem for sure.
 
Discobox

Discobox

Member
thanks mate. I basically ruled underfeeding out by now. ph was too high so it locked out zinc. all the symptoms pretty much fit to the zinc deficiency. ph is under control now. hope for fast recovery.
 
Dr.Pecker

Dr.Pecker

Well-Known Member
Bugeye said:
Your plant is certainly deficient on nitrogen. The question is why? You can have deficiencies from nutrients not being in your soil to begin with, from your plant using them up, or from lockout which can be caused by bad ph or too much of something (google nutrient antagonism charts).

Your plant isn't big enough to have used up all the nutrients in a rich soil so I would have to guess you had a seedling mix soil or something weak in nutrients to start with. Is this right? If so, you need to start feeding her again.

In general, you never feed a plant in first two weeks if growing in soil. If it is a rich soil, you don't need to feed for first month. If it is a seedling soil you need to start mild feeding near end of first two weeks or transplant into richer soil. It is good to know your water ph and soil ph as well. You have to rule out a ph problem for sure.
Click to expand...
Good answer:clap:good answer:clap:
 
pinkjackyle

pinkjackyle

Well-Known Member
tap water always needs to b ph'ed mine is 7.8 ,high limestone content , hard water . have to use rain water b cuzz it will not ph down . ive ph'ed it to 7 then 12 hrs later BAM!! its right back.
 
Discobox

Discobox

Member
pinkjackyle said:
tap water always needs to b ph'ed mine is 7.8 ,high limestone content , hard water . have to use rain water b cuzz it will not ph down . ive ph'ed it to 7 then 12 hrs later BAM!! its right back.
Click to expand...
This is exactly what Im experiencing Right Now. Tab Water is truly troubleing me. I have to See if i can keep it on a Constant Level. The mate
 
thegreensurfer

thegreensurfer

Well-Known Member
You have multiple deficiencies.....
You certainly dont have a zinc deficiency, this would be limited to the top shoots with a higher contrast between green veins and yellow intervenial coloration.
Yours seems to start from the bottom indicating it is a mobile nutrient deficiency.
I would guess a combo Nitrogen/Magnesium deficency, and possibly Sulfur.
 
Discobox

Discobox

Member
Ok, so we're basically back to the question: Is it...
a.) Overfeeding -> Nutrient-Lock -> Deficency?
b.) Underfeeding -> Deficency?
c.) PH way too high -> Nutrient-Lock -> Deficency?

Since I'm using BioBizz All Mix Soil and the plants are still quite small I dont think it could be Underfeeding.
I rather think because of adding Nuts in the very beginning (mistake) and the Blumat-Water-System (always moist soil, lots of nuts are dissolved) it is a combination of a) overfeeding and c) too high ph.

My approach right now: Flushed, now feeding plain water without blumat-watering-system and check PH every time very carefuly.

What do you think?
 
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