wtf is this?(pics)

[Litz_C]

i had encounter this problem from my last grow before.

it look kinda like nutes burn or some kind of nutes deficiency, and it had a burned or weird smell out of this plant from other healthy ones...

currenty i using hydroponic ebb & flow system.

Right now is only like 1 and a half week of flowering stage.

I m using GH nutes(lucas formula) and pH are 6.0~5.7 and the ppm range around 1100~1400.

I dropped my ppm after i my platn start to have problems it was support to stay solid 1400ppm.

is it anyway to fix this baby? my last grow can't save one of those which infected with this diease/nutes disorder. Some one help please?

Here some pic:
















sorry i took most of those picture in my restroom only have few light bulb on.

 

[sproutco]

Start with phosphorus toxicity:

General yellowing of leaves, older leaf tips and margins later becoming yellowish or brownish, followed by necrotic spots; leaf abscission develops (similar to potassium deficiency in some plants and nitrogen excess in others)

The lucas formula has alot of phosphorus and may not be suitable for soilless or soil growing.

 

[Litz_C]

so is too much P for those ladies?

and i apply half strenght nutes to fix those problem right?

i want to make sure everything is right before i apply them with 1/2 strenght nutes. Thanks

 

[sproutco]

1/2 strength phosphorus. Looks like copper deficiency from all this.

 

[MTF-Sandman]

I'm leaning towards nute lock as well...probably from the P levels.

Flush them with straight RO (or another clean water source) to rinse any salt buildups from the cubes then go back with 1/2 strength nutes. 1100ppm is still pretty high IMO for a plant that size...try backing it off to around 800-900ppm until they get over this funk then start slowly bumping the nute levels.

Did you foliar spray something on them? Almost looks like neem burn as well...

 

[Litz_C]

I'm leaning towards nute lock as well...probably from the P levels.

Flush them with straight RO (or another clean water source) to rinse any salt buildups from the cubes then go back with 1/2 strength nutes. 1100ppm is still pretty high IMO for a plant that size...try backing it off to around 800-900ppm until they get over this funk then start slowly bumping the nute levels.

Did you foliar spray something on them? Almost looks like neem burn as well...

damn MTF you are a pro,BIG PROPZ, i jsut spray neem a week ago then spray some plain water to wash the neem off.

is it fine to flush them with tap water?(pH around 7.0) then apply them slowly with 1/2 nutes right?

i gonna work on dat thank man.

 

[biglongblunt]

funny how no one post the solution sometimes?

 

[Blackmelo]

lol good point blunt...

Litz, sounds like a plan but use a ph of 6.5

 

[MTF-Sandman]

As long as the water is pretty low PPM it'll be fine to flush them with tap...some public water and and most private wells contain alot of calcium - which can cause PH problems if it builds up the in cubes. If your tap water is under 100ppm it should be fine though.

The leaf burn is one of the reasons I don't like to use neem if I can avoid it...it's nice and organic and all that shit, but seems to cripple alot of plants after usage IMO. Might wanna spray the leaves with some clean water as well to help remove any lingering residues from the neem that might be preventing proper tranpiration (transpiration issues usually show up as leaves with the edges rolling up or down - as well as some nute tox's)

 

[Guest]

flush

 

[inflorescence]

Might wanna spray the leaves with some clean water as well to help remove any lingering residues from the neem that might be preventing proper tranpiration (transpiration issues usually show up as leaves with the edges rolling up or down - as well as some nute tox's)

It's friday, and I'm drinkin' but how is water gonna remove an oil. Water and oil don't mix. Don't you have to use some sort of soap, like castile soap, to emulsify the oil so that it will go into the water that is being rinsed off?
But yeah, if you oil a plant that has too much salt in the medium, not only is the water being drawn out of the plant into the soil but the neem, like sandman said, is preventing transpiration, so there is no where for the water to go in your plant, it can't evap out the canopy and it is not being absorbed by the roots.

flush

And flush one more time for good measure.
Those damaged leaves won't be coming back so you'll be starting from the tips. It can be done but????????

 

[Litz_C]

i think i goin to give up the neem then, it ruin my last crops and now the recent ones.

right now i drop my ppm back to 1100~900, and it will stablize tomorrow.

it pain in the ass to see ur own ladies getting burn badly and Phosphorus deficiency.

i jsut wash my rez today and i going to flush once then apply the nutes bak in the tank.

hope thing get better.