gogogogogogo
Well-Known Member
Just need a confirmation... it's starting at the very lower leaves and working its way up, week three flower. Should I start pumping up the P?
Is this a Phosphorous Deficiency?
- Thread starter gogogogogogo
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trippytrappy
Well-Known Member
looks like you havnt gave enuff veg feed b4 you switched to flower
gogogogogogo
Well-Known Member
Seems to be a genetic thing, undersides are green and leaves are predominately healthy.
Actually, this is super soil. They haven't received anything but water. Also, I'm pretty sure nitrogen deficiencies do not appear mottled. I know full well what a N deficiency looks like, this is nothing like it.
It has a mottled and browned appearance, not overall yellowing.
iHearAll
Well-Known Member
idk that looks like straight phos def
gogogogogogo
Well-Known Member
I'm leaning fairly heavily towards that, I just hoped for another opinion. I can almost say for a certainty it's not a nitrogen deficiency as my outdoor girls are having legitimate N defs 3/4th through flower and that's definitely not what I'm seeing here.
More on the fan leaves... they're all like that, on both runs I've done with Blue Dream it's been like that. Not all too concerned about that!
Budzbuddha
Well-Known Member
Potassium deficiency (K) causes red stems , necrotic spots and paleness.
To me , you have a lockout . Soil missing perlite . Looks way wet.
To me , you have a lockout . Soil missing perlite . Looks way wet.
gogogogogogo
Well-Known Member
Probably because I just threw on a cup of EWC as a top dressing! There's actually tons of perlite (I overdid it) in the soil, but it's really hard to tell because in the process of making super soil it got coated by organic matter and appears largely like clumps of soil. I thought the same thing initially and was confused by the lack of perlite until I realized that.
This is why I'm asking though, because I'm on the fence as to whether it be a P or K issue, or both. Soil PH and water added is pretty spot on, I wouldn't imagine a lockout! They only get a watering now when the very bottom is dry!
gogogogogogo
Well-Known Member
If you look closely, you can actually see the clumps I'm talking about. They look like bits of dirt clumped together, but it's definitely perlite. I definitely see where you could get that thought from, though!
Thanks for the response
fabizpwn
Well-Known Member
How's the rest of the plant look? The leaf on the plant you show it near the bottom under the canopy getting very little light. I have larger older leaves do this in veg when they are under the fully grown canopy not receiving any light. Same thing in flower. If it's just a couple lower leaves here an there i wouldn't even stress it. In 3-4 weeks all the leaves are gonna start dieing rapidly.
Dr. Who
Well-Known Member
Who's soil formula?
List the ingr. and amounts used to build it please.....
Are you doing that 'layering" thing?
Use my own soil formulations and do a 2 step method......Veg soils and at the point of the plant being at my flip size. I do my last up-pot with a bloom soil. 8 days more in veg and into the bloom room.....
fabizpwn
Well-Known Member
Show a photo of the entire plant. I think everyone is looking into this too much and wanting to blame it on everything but the obvious. Leaves not receiving light are gonna die, they are gonna show deficient one way or another. the plant is using the energy in the leaf to continue growing/budding and the leaf is going to die and fall off. I'm curious as to how the plant looks as a whole. I've attached some photos of my personal experience with the same condition as the couple of leaves you've shown. 99% of the plant material is healthy with the unhealthy 1% being located in low/no light areas
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Resinhound
Well-Known Member
P is particularly notorious for having uptake issues in soils with poor drainage or in cooler root zone temperatures. Alot of times the P is there it's just locked in the soil and unavailable.
fabizpwn
Well-Known Member
Maybe mine is a P issue too, never looked into it. When a large majority of the plant is healthy especially the top 2/3rds of it that I'm concerned about I tend to not worry about the lower stuff that's not gonna produce or get hacked off. It does make sense though what you are saying, my root zone stays 65-67 degrees all day everyday.
Resinhound
Well-Known Member
Small P deficiencies are pretty common, generally it's not something very serious unless it starts marching up the plant or gets excessive. The reverse, a lockout cause from to much P applied to the soil is much more harmful. One has to be careful treating a P problem, in alot of cases it's environmental or grower watering habits/soil drainage issues and has nothing to do with the amount of P in the soil.
fabizpwn
Well-Known Member
Well it isn't my post I was commenting as well. Maybe it'll solve the OPs problem.
MrClone
Active Member
Looks like it could be a magnesium deficiency here this may help you..
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gogogogogogo
Well-Known Member
I'll post a complete picture of the plant, however, they're looking pretty healthy as you'll see. Buds are packing on weight pretty quickly for the third week! I'll post back later tonight.