Stick is Stumped Once Again!

[A4]

From what I can see Stick, I am going to guess N toxicity bro. All those leaves curling over like that and the tips pointing down always puts my spidey senses on too much N. With N toxicity water uptake from the soil is affected which will cause some burning on the leaves. Another thing, you said you were hitting them pretty hard with P. I am assuming what you have been using as P also has K in it? Too much N & K will cause Ca deficiencies to begin showing. Could be why you were looking for pH issues and not finding any.

I always like to give advice as, "what would I do if it were my plants". Generally the last thing I want to do is flush a plant in flower, I absolutely hate it to no end. In this case though, I believe I would flush the entire thing with 1/4 nutrient solution to get a couple of gallons of runoff. Making sure to use very minimum N and bump up the Ca. I would probably be foliar feeding some Ca as well but that is a touchy subject for some growers during flowering but I can tell you from personal experience it works. Ca helps with the transportation of all nutrients in the plant so it will help clear a path to get your plant back on track.

That is just me though. You know what they say about free advice.

 

[Another One Bites the Dust1]

Thanks SO much A4 for the very concise information, and I 'feel' that you are indeed correct.

Another good brother PMed me with the same diagnosis.

I am getting ready to head out the door. Don't have a Smart Phone yet. Getting one in the next week, so won't have access to the net until tonight.

I will respond in full later today/night.

I am not opposed to foliar feeding in flower, as I was having to spray the entire plants including flowers with organic sprays for the spider mites.

What would you recommend that I Ca, with?

Thanks again ALL, for your help and time!

Peace.

 

[Waira]

From what I can see Stick, I am going to guess N toxicity bro. All those leaves curling over like that and the tips pointing down always puts my spidey senses on too much N. With N toxicity water uptake from the soil is affected which will cause some burning on the leaves. Another thing, you said you were hitting them pretty hard with P. I am assuming what you have been using as P also has K in it? Too much N & K will cause Ca deficiencies to begin showing. Could be why you were looking for pH issues and not finding any.

I always like to give advice as, "what would I do if it were my plants". Generally the last thing I want to do is flush a plant in flower, I absolutely hate it to no end. In this case though, I believe I would flush the entire thing with 1/4 nutrient solution to get a couple of gallons of runoff. Making sure to use very minimum N and bump up the Ca. I would probably be foliar feeding some Ca as well but that is a touchy subject for some growers during flowering but I can tell you from personal experience it works. Ca helps with the transportation of all nutrients in the plant so it will help clear a path to get your plant back on track.

Stickfriend! hello my good brother,...looks like you have a fine puzzle to piece together here,.. I think it's more than one thing going on, but I'm not on a slam-dunk diagnosis just yet,... A4 has definitely put some good pieces down already,...
- what were you treating with for spider mites? sometimes, the leaves tolerate the stuff, show no significant signs of stress, but "deep down", they didn't like it one bit, and make them more sensitive to other stressors,...
-- I'm with A4 on the N toxicity thing,... the clawing, deep color combined with the leggy, thin stem build,... but is it part of the other symptoms, :dunno:... how much N must be present to cause other issues is an unknown to me,... your N tox. isn't exactly severe, but looks longer term,... A4 is right about the excess P and K messing with uptake of several other nute's-- Mg, Ca, Zn, Cu, Fe,... Zn being noted in literature as the most common, but there are no signs of that,... All this said, to me the leaf symptoms (N-tox aside) sure look like P defc., (https://www.autoflower.org/f90/quick-dirty-defc-photo-depot-38859.html.), and in bloom--

.... which seems contrary since you're hitting them pretty hard with it,... begging the question, is something else -not pH related- blocking the uptake, right?.... from what I can gather, N-tox doesn't interfere with P uptake directly (chemical interaction)...? --but as A4 noted, water, and therefore other nutrients uptake, are restricted by N-tox',....vascular tissue breakdown being the culprit,... this might be the ticket Stick, but I'd like JM to chime in too,... I'll drop him a note....

 

[JM]

im with A4 on this... even though it looks like potassium and phopshorous deficiency.

Hope thishelps mate.

I'd flush good... and reset with a clean balanced nutrient regime.

 

[Waira]

...too funny!.. I just VM'ed you JM... :smoke:

*** Stick, temps are okay, right?... cold spells mess with all kinds of nute' uptake,...

 

[namvet25]

A4 is what I would follow. Flush with mild solution of bloom nutes along with cal/mag this should help with lock out and allow better root intake of your nutes.

 

[Dazed]

I'm really glad I followed this thread, awesome advice. I have slight signs of the same thing and was putting it down to my TLO mix being too hot and also me feeding straight teas not diluted.



Thanks guys and hope you get it sorted Stick.

 

[Rusty]

I have a few Lowryder autoflower plants that are growing very well and appear healthy. They are under MH light, drip fed RO water and nutes chaged every week. Today is their 60th day birthday and still no sign of flowers. This is my very first grow and i thought i was doing ok. So today i switched to HPS light. Any thoughts

 

[pop22]

I don't see where you get the idea its an N defiencey. His leaves are dark green, not yellowed or burnt. No lower leaves yellowed to indicate younger leaves stealing the N. Dsrk green nand curling tips, looks like a copper defiency to me me or possibly N toxicity.

Seems to me his pic looks like this one:

 

[namvet25]

I have a few Lowryder autoflower plants that are growing very well and appear healthy. They are under MH light, drip fed RO water and nutes chaged every week. Today is their 60th day birthday and still no sign of flowers. This is my very first grow and i thought i was doing ok. So today i switched to HPS light. Any thoughts

Day 60 and no flowers yet is not good especialy with Lowryders.They should be almost done by now.Can you post somw pics?