Nitrogen toxicity?

[ISM2]

Strain: Nirvana Northern Lights
Medium/Nutes: 5gal DWC, using GH Flora Series
Light: 360w HPS
5.6pH, 1475ppm, water at 70F, daytime temp: 72F
nighttime temp: 66F, 40% RH
36 days in flower

The other plants are not exhibiting this abnormality. It seems to only affect new growth.


I have since changed the nutrient solution and now using the full-strength Lucas ratio: 8M, 16B per gallon of water. I'm using this mix in hopes to reduce the amount of nitrogen in the mix.)
Adjusted the solution to 5.8pH.

 

[maimunji]

Looks like some kind of mites.

 

[raven44]

Curling like that means your close to burning them. However you haven't burnt them yet...

Dial back a tad on the nitrogen and that will go away most likely.

However curling like that is not a bad thing. Its ok so long as you do not burn the plant at all.

Its a good thing actually. Means the plant is under some stress but not enough stress to burn it... stress like this can increase secondary metabolite production... so long as you do not burn them...

When I have a plant growing perfect I can make it curl like that and unfurl at my Will.. all by increasing or decreasing the nitrogen content... in my case the grow bottle is a 2-1-6...

 

[Emmay_Dee]

If you dial back the nitrogen it will surely become magnesium deficient. The claw is from excess nitrogen that still had good cationing with calcium and magnesium. If you lessen the nitrogen that plant will speckle from the bottom up because calcium will always win the fight over magnesium and be the first to bind to the nitrogen leaving magnesium all alone wishing he had a fucking anion PS... Ive never seen a clawed leaf uncurl... Ever

 

[raven44]

I can make my clawed leaves uncurl and re curl at will.... seen it many times w how I grow in soiless. .

 

[ISM2]

Looks like some kind of mites.

Nope, not mites. I've checked for any kind of bug with a magnifying glass.

The "clawing" of the leaves can also been seen on the lower bud sites...it has only affected the new growth.

 

[Emmay_Dee]

Mites can hide in a clawed plant better but i didnt see any chlorosis on these. And lets not get the claw mixed up with suffocated roots. Ive seen plenty of hydro grows not claw but droop sadly due to lack of symbiosis and low oxygen levels in roots due to high temps in the resevoirs. Hydro is why co2 supplement was created because there was none to the roots so it had to be force fed to the leaves. Again never seen a clawed leaf uncurl

~Peace~

 

[maimunji]

Nope, not mites. I've checked for any kind of bug with a magnifying glass.

The "clawing" of the leaves can also been seen on the lower bud sites...it has only affected the new growth.

Then something really slow calcium uptake. Can be nitrogen toxity. But why only new growth is affected? Maybe nitrogen and calcium play between to the point when calcium isn't more available.

 

[raven44]

Mites can hide in a clawed plant better but i didnt see any chlorosis on these. And lets not get the claw mixed up with suffocated roots. Ive seen plenty of hydro grows not claw but droop sadly due to lack of symbiosis and low oxygen levels in roots due to high temps in the resevoirs. Hydro is why co2 supplement was created because there was none to the roots so it had to be force fed to the leaves. Again never seen a clawed leaf uncurl

~Peace~

Whatever bro lmao..... no way my roots are suffocating with how much perlite I add. Sorry. Clawed leaves will uncurl. Jusy cause u haven't seen it w how u grow means nothing. Means ur inexperienced at best. Co2 wasn't invented for hydro. Your sadly confused obviously an organics grower. So many confised organics growers. Hydro will outperform organics yield wise and flavor wise it's a scientifically proven fact sorry bud.

 

[Emmay_Dee]

Whatever bro lmao..... no way my roots are suffocating with how much perlite I add. Sorry.

Where did you come from troll.

Perlite can hold more oxygen than the water. But if the roots take the O from the perlite the plant droops sadly when water couldnt replenish depleted supply. Hence hydro droop being mistaken for claw. Dont speak of my experience you have no idea

 

[ISM2]

Problem solved!!

Problem solved!!

The problem was a clogged bubble wand. There was funk in the junction where the airline connects to the wand.
This was stopping the flow of air to the wand and therefore the roots were slowly suffocating.

I usually check for bubbles... That's why procedures are in place, doh! lol

Thank you all for taking the time to read and reply with your input.
That's why I love this site. The replies may not always directly solve the problem but it gets the person thinking.

I'll post an update in a few days.

 

[ISM2]

And lets not get the claw mixed up with suffocated roots. Ive seen plenty of hydro grows not claw but droop sadly due to lack of symbiosis and low oxygen levels in roots...

Thanks, Emmay_Dee. This is what made me look into the flow of air to the roots.

 

[Emmay_Dee]

I wanted to give you the best of what i know. Congrats wiggling through all the BS.

~Always~

 

[raven44]

Hahahahaha ok bro

How come this only happens to my plants that I know best and grow perfectly and only haooens when I get the plant growing just right lol

Doesn't happen unfortunately when growing new strains gotta get to know em. It increases secondary metabolite production which u obviously know little if anything about... cause to u its drooping lmao.

Do u know what a secondary metabolite is and did u know their production can be increased via salt stress? ? Lavendar growers do this...

Did u know salt stress will make a plant claw? Hmmmm. Can u do 1+1 yet??

Glad u fixed ur problem.

 

[ISM2]

Update...

Update...

The plant is doing much better. It's at 47 days under 12/12.
The problem set it back a bit, but it has recovered and is looking happier.
Also, some of the affected leaves have uncurled a little.