Is yellowing normal now that I'm flowering

Kassiopeija

Well-Known Member
It was pointed out you gave out bad information
--->
No just curious. I didn't realize it was the OPs plant pics. Looks like a Sulphur deficiency.
Screenshot_20220202-030405~2.png
^^ from a recently published, peer-reviewed study

Tops, not exclusive fan-leaves only.
And what about the purple petioles? Could you formulate a theory about this unnormal discoloration based on your past experience?
Has it to do with this?:

IMG_20220308_015017~3.jpg
 

Samwell Seed Well

Well-Known Member
--->

View attachment 5098202
^^ from a recently published, peer-reviewed study

Tops, not exclusive fan-leaves only.
And what about the purple petioles? Could you formulate a theory about this unnormal discoloration based on your past experience?
Has it to do with this?:

View attachment 5098205
This is the same guy who knee jerk told me my water was freezing...

At 68 degress....

Pretty sure hes learning as he goes but how paradoxical of him...
 

twentyeight.threefive

Well-Known Member
And what about the purple petioles? Could you formulate a theory about this unnormal discoloration based on your past experience?
Also I said "looks like", I didn't claim anything factual. The OP didn't give enough information to make a diagnosis one way or another.

Since you have all the answers in your books, what is the OPs issue?


Sulphur is essential for the production of hormones and vitamins, it’s part of the amino acids and is directly involved in the flavour. A sulphur deficiency causes the oldest leaves to develop a lime-green, yellowish colour. As the deficiency progresses, the leaves turn yellow while keeping their veins green, the petioles turn purple and the stems woody.

Most times, a deficiency of this trace element is usually preceded by a nutrient lockout caused by an excess of calcium or a PH level too high. The solution to this problem is to keep the PH between 5.5 and 6.0 by adding sulphur in ore form for a quick assimilation. If a sulphur excess is produced, we should flush the roots.
 

McStrats

Well-Known Member
There actually are quite a few commercial growers around this site
I never said there wasn't. Just pointing out that the biggest dicks here are the guys who bought a 4x4 tent 2 years ago and come here to have pissing matches about their alleged knowledge. Someone who has never grown weed but might have grown something else...has very much a valuable insight. Most people on here are either newbies, or a variety of home growers. The handful of commercial guys I encountered on here were actually pretty cool.
 

rkymtnman

Well-Known Member
I never said there wasn't. Just pointing out that the biggest dicks here are the guys who bought a 4x4 tent 2 years ago and come here to have pissing matches about their alleged knowledge. Someone who has never grown weed but might have grown something else...has very much a valuable insight. Most people on here are either newbies, or a variety of home growers. The handful of commercial guys I encountered on here were actually pretty cool.
do you grow in hydro?
 

Kassiopeija

Well-Known Member
Also I said "looks like", I didn't claim anything factual. The OP didn't give enough information to make a diagnosis one way or another.

Since you have all the answers in your books, what is the OPs issue?


Sulphur is essential for the production of hormones and vitamins, it’s part of the amino acids and is directly involved in the flavour. A sulphur deficiency causes the oldest leaves to develop a lime-green, yellowish colour. As the deficiency progresses, the leaves turn yellow while keeping their veins green, the petioles turn purple and the stems woody.

Most times, a deficiency of this trace element is usually preceded by a nutrient lockout caused by an excess of calcium or a PH level too high. The solution to this problem is to keep the PH between 5.5 and 6.0 by adding sulphur in ore form for a quick assimilation. If a sulphur excess is produced, we should flush the roots.
This is a blog from a commercial site selling nute bottles... wouldnt these have a conflict of interest? Could you describe the credibility of the author, and how he is being controlled for errors?

From your link: (right at the top)
KRuFnY4-1022x1024.jpg
And do you agree with these painted pics?

Strange, any type of deficiency where the leaf turns yellow (Iron, Nitrogen) seems to get a purple petiole, too! Even Nitrogen-deficiency, yes? Strange, strange... not a single illustration where a leaf gets yellow BUT veins stay normal.... (but I'm sure I've seen those...)

And what about this bizarre description of a Mg-deficiency?
magnesio-fase-3-150x150-5.jpeg
:lol:
are they serious?

A sulphur deficiency causes the oldest leaves to develop a lime-green, yellowish colour.
"the old leaves"? so it starts at the bottom? but their chart has it as an immobile nute so shouldn't it start at the top? so where does it start? they only show a handdrawn single leaf.

And what about the Anthocyan buildup? which chemocycle is actually affected, what causes this discoloration? I mean, that the discoloration is there I can behold with my own eyes easily, but this doesnt tell me anything about the nature of these things.

And the early Sulfur-def seems to show heavy "interveinal chlorosis" (a search for that term on their website yielded 0 hits) you see the leaf is heavily contrasted green-yellow in stripes. Do you agree a sulfur def looks like that, yes?
Where, at the OP's pictures does it look like that? His leaves turn yellow beginning from the tip, then middle, then the whole.
 
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McStrats

Well-Known Member
This is a blog from a commercial site selling nute bottles... wouldnt these have a conflict of interest? Could you describe the credibility of the author, and how he is being controlled for errors?

From your link: (right at the top)
View attachment 5098243
And do you agree with these painted pics?

Strange, any type of deficiency where the leaf turns yellow (Iron, Nitrogen) seems to get a purple petiole, too! Even Nitrogen-deficiency, yes? Strange, strange... not a single illustration where a leaf gets yellow BUT veins stay normal....

And what about this bizarre description of a Mg-deficiency?
View attachment 5098246
:lol:
are they serious?


"the old leaves"? so it starts at the bottom? but their chart has it as an immobile nute so shouldn't it start at the top? so where does it start? they only show a handdrawn single leaf.

And what about the Anthocyan buildup? which chemocycle is actually affected, what causes this discoloration? I mean, that the discoloration is there I can behold with my own eyes easily, but this doesnt tell me anything about the nature of these things.

And the early Sulfur-def seems to show heavy "interveinal chlorosis" (a search for that term on their website yielded 0 hits) you see the leaf is heavily contrasted green-yellow in stripes. Do you agree a sulfur def looks like that, yes?
Where, at the OP's pictures does it look like that? His leaves turn yellow beginning from the tip, then middle, then the whole.
Thanks for that. Science wins again :bigjoint::bigjoint::bigjoint:
 
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