Is this an N deficiency?

[Blackbeard]

So first grow, using GH Flora trio going by GH schedule. This last feed I cut Micro completely. They're at day 40 flower. So I'm thinking this is just an N deficiency and normal, but being my first grow I wanted some more opinions.

Thanks
-BB

 

[Capt. C]

IMO you are spot on and i see no need for concern for that at 6 weeks into flower. Some will be beat right to hell close to the finish line . I just pluck mine when they start looking bad

 

[Jewels]

My plants look like that on tapwater only.
I have high ph tapwater.
I haven't used that product,,,
Is it possible that the elixir relies on the skimped component, to drive down the overall ph?
Capt's right, and they will get ugly, ,, should be more like autumn.
It is too early ( and a very inopportune time ) to hit a bad note on feeding. Test what you can, keep to the middle of the road.

They look great, man. Week 6 is a gooder !

 

[Keif Lint]

Can't really tell without knowing your medium or lights but possibly N or Mg

 

[Blackbeard]

Can't really tell without knowing your medium or lights but possibly N or Mg

Medium=Fox Farm Bushdoctor Coco Loco (ingredients sound like the recipe for a super soil, worm castings, guano, meals, etc.)
Light= Mars Hydro SP-150
You can view most details of the grow in my grow journal HERE.

 

[swAmp Hydroponics]

Can I ask why you cut out the Micro and not the Grow?
Micro is intended to be used throughout the whole grow.
Stopping it means you're also losing your Ca, Mg and most other "smaller" nutrients instead of just losing primary N from the Grow.

 

[LittleDabbie]

Looks like the start of a cal and mag problem add back in those nutes.

 

[Blackbeard]

Can I ask why you cut out the Micro and not the Grow?
Micro is intended to be used throughout the whole grow.
Stopping it means you're also losing your Ca, Mg and most other "smaller" nutrients instead of just losing primary N from the Grow.

You know what, you're right it wasn't Micro I cut it was Gro. So I have been giving them CALiMAGic 3ml/Gal the whole time. Now I don't know because Gro is only 2 N, I was thinking Micro has a 5 N so it was just missing some N, but I must have been medicated when I first analyzed this lol.

 

[Blackbeard]

So I found this deficiency chart, and now that I'm looking at it, what I'm seeing looks most like the P deficiency, yellowing center out and the dark rust spots. but with thinking about what I'm feeding it doesn't make sense. The gro that I cut out had 2 for P so yes they are getting a little less there but I am giving more Bloom which has a 5 P, so I would think that would even out. IDK but I'm thinking I'm going to be flushing soon and then they're gonna be looking all kinds of deficient lol, unless you all think I should worry about it?

 

[swAmp Hydroponics]

So I found this deficiency chart, and now that I'm looking at it, what I'm seeing looks most like the P deficiency, yellowing center out and the dark rust spots. but with thinking about what I'm feeding it doesn't make sense. The gro that I cut out had 2 for P so yes they are getting a little less there but I am giving more Bloom which has a 5 P, so I would think that would even out. IDK but I'm thinking I'm going to be flushing soon and then they're gonna be looking all kinds of deficient lol, unless you all think I should worry about it?
View attachment 30946

I've got a laminated movie size poster I had made of that chart hanging in my room

I've also found these to help a lot also...

The coloring is a lot more descriptive in it.
Paired with the other's information they seem to be pretty spot on.

 

[Keif Lint]

when did you first notice the yellowing, how long ago did you change the feed? It would take day's for a nute deficiency to start after a change unless it was already present where as I've had lockout symptoms due to bad pH show quite quickly, it's hard to say exactly but I wouldn't go changing too much if you feel they are healthy apart from a few fans???

 

[Buck5050]

my 2 cents...

On your first run with a strain, it's very hard to tell what they are going to need and when. Normally if feeding regularly during mid to late flower the plant will start pulling from its nutrient reserves in the leaves to help mature its flower. It takes what it needs and ends up fading on its own. The lower big fan leaves go first and it's usually on a common pace with the flowers developing. If you run her again you can start boosting the P on day 30 and it could help.

 

[Blackbeard]

when did you first notice the yellowing, how long ago did you change the feed? It would take day's for a nute deficiency to start after a change unless it was already present where as I've had lockout symptoms due to bad pH show quite quickly, it's hard to say exactly but I wouldn't go changing too much if you feel they are healthy apart from a few fans???

So I fed the GH week 9 amounts 4ml micro, 8ml bloom per 1 gal water, and I added 3ml CaliMagic per 1 gal water on Thursday the 1st of Oct. and I noticed this yesterday morning, then last night it was a little worse and I noticed the yellowing. Now today it's a little worse on that bud, and one other is showing the same thing, like how the first one looked yesterday.
I also recently made some changes lol, I removed trellis netting, tops started sagging down, I gentleishly stabbed some bamboo stakes into the pots, tied them up. Some more started sagging then I found and ordered plant yoyo's and put them in. The reason I mention this is because I'm only seeing this on one plant of two, and today I see more of the yellowing on this plant and none on the other. I don't know if it's plausible that I damaged roots on the one and that's why it's showing deficiency as it no longer has that root section connected to suck up the food, idk? But they also were needing water every other day from late veg through flower till last week and now they're needing water like every 3rd day now. Does that sound right? End of flower taking less water?

I mean worst case I have to kill them early right, so I'm not going to change anything yet.

EDIT: I forgot, when I fed them on the 1st, I did raise the PH a little. I'm using the little bottle and drips to compare to color chart. The reason I put a little more ph up is because my water is very low ph, it's straight orange like the 4.0 when I first test it after nutes. so I add 1ml ph up per gal, and it gets looking like the 5.0 color, but I always see between 5.5-6.5 so I figured maybe get it a little closer to the 6.0 color. So could this be my problem? Because it happened pretty fast.

 

[Keif Lint]

So I fed the GH week 9 amounts 4ml micro, 8ml bloom per 1 gal water, and I added 3ml CaliMagic per 1 gal water on Thursday the 1st of Oct. and I noticed this yesterday morning, then last night it was a little worse and I noticed the yellowing. Now today it's a little worse on that bud, and one other is showing the same thing, like how the first one looked yesterday.
I also recently made some changes lol, I removed trellis netting, tops started sagging down, I gentleishly stabbed some bamboo stakes into the pots, tied them up. Some more started sagging then I found and ordered plant yoyo's and put them in. The reason I mention this is because I'm only seeing this on one plant of two, and today I see more of the yellowing on this plant and none on the other. I don't know if it's plausible that I damaged roots on the one and that's why it's showing deficiency as it no longer has that root section connected to suck up the food, idk? But they also were needing water every other day from late veg through flower till last week and now they're needing water like every 3rd day now. Does that sound right? End of flower taking less water?

I mean worst case I have to kill them early right, so I'm not going to change anything yet.

EDIT: I forgot, when I fed them on the 1st, I did raise the PH a little. I'm using the little bottle and drips to compare to color chart. The reason I put a little more ph up is because my water is very low ph, it's straight orange like the 4.0 when I first test it after nutes. so I add 1ml ph up per gal, and it gets looking like the 5.0 color, but I always see between 5.5-6.5 so I figured maybe get it a little closer to the 6.0 color. So could this be my problem? Because it happened pretty fast.

Yeah could be a combo of all, if it's drinking less and fading fan leaves it could just be finishing up and be an early pheno maybe. I don't know what to do sorry mate, I'd probably feed a bit stronger to get a bit more out of it for a couple weeks if it was me ? but I'm a serial plant abuser ? hopefully you get it sorted ?

 

[Buck5050]

4ml micro, 8ml bloom

Like Keif said maybe a bit stronger. I think Lucas formula is about twice the dose you stated.

 

[Blackbeard]

Yeah could be a combo of all, if it's drinking less and fading fan leaves it could just be finishing up and be an early pheno maybe. I don't know what to do sorry mate, I'd probably feed a bit stronger to get a bit more out of it for a couple weeks if it was me ? but I'm a serial plant abuser ? hopefully you get it sorted ?

Ahh, well they are Citrus Milfs and the page on DCSE says "Recommended flower time of 60+ days indoors." so maybe someone else here has input on an early finishing pheno of citrus milf.