Nitrogen toxicity issue in 12/12, how to proceed?

bird mcbride

bird mcbride

Well-Known Member
And seeing how the plant(s) is suffering root loss for whatever reason here's where a pump up sprayer comes in handy. A plant can absorb certain nutrients and moisture through the leaves and stuff to help from further loss of plant structure.

I set the res so res water can safely be sprayed on the plants. I also like to top up the res by spraying the plants and the gravel with fresh water. The moms get the spent res water from the budders through a drain to waste system.
 
tropicalcannabispatient

tropicalcannabispatient

Well-Known Member
bird mcbride said:
I tossed that old book in the trash, it really doesn't make any logical sense.

The best thing to do is don't OD the plant(s). The yellowing is most likely being caused by underwatering causing root loss or root loss due to high/low concentrations of NPK. When the moms start yellowing I up the watering but I keep the NPK the same in the mix. When leaves yellow it means that it's not getting the appropriate level of nutrients for whatever reason. PH...rotten critters, who knows.
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I really dont think yellowing shows up for overwatering, most likely it will show as dropping leaves, yellowing can be number of things, but u have to identify first where the yellowing is starting from to properly diagnose, if it start from bottom, middle, or top, then is all different scenarios. happy growing moufos!!
 
weedemart

weedemart

Well-Known Member
hotrodharley said:
Water will mobilize nutrients that have been left behind because of a number of issues. The straight water you apply will not be "straight" long after contacting the soil.
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yeah you're right better fix an excess by creating an imbalance in the media that will lead to defiency. bullshit advice to water with pure water lol. gl
 
weedemart

weedemart

Well-Known Member
hotrodharley said:
Knowing about diffusion I don't see how adding to the already high EC will correct anything. The high EC feed was too high for the EC within the plant. The plant will use the water but the leftover salts are what starts literally coating the roots preventing uptake.
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Did you ever heard about salt leaching? ... salt are not stuck in medium .... water till you have have 10-20% run off is a simple way to avoid buildup.if his plants suffer from overfeeding then , reducing ec will correct the situation without stressing more the plants.

Watering with pure water will correct the N excess but will induce defiency and further stress the plants more.


do your search your self , im done sourcing things i knew for years.
 
ILM

ILM

Well-Known Member
weedemart said:
Did you ever heard about salt leaching? ... salt are not stuck in medium .... water till you have have 10-20% run off is a simple way to avoid buildup.if his plants suffer from overfeeding then , reducing ec will correct the situation without stressing more the plants.

Watering with pure water will correct the N excess but will induce defiency and further stress the plants more.


do your search your self , im done sourcing things i knew for years.
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Right on I'll second that.it's all about the run off:clap:
 
weedemart

weedemart

Well-Known Member
some watering fact for beginner.

If you have soil at .Xec and you feed with pure water what happens? some ions are lost in the run off and medium became ''imbalanced''. some nutrients leached in the run off will induce nutrients deficiency because they are not replaced.

If you have soil at .Xec and you feed with low-medium ec what happens? some ions are loss in the run off and replaced with news salt. medium stay in balance...

if you have soil at .Xec and you feed with high ec what happens? some ions are still lost in the run off while other are building up. medium become too ''hot''



How you measure the ec of medium?
You measure the run off

How you know if your overfeeding/underfeeding?
You measure run off each time you water take note and follow progression.

if run off keep getting higher and higher, then your overfeeding
if run off stay stable, your on the sweet spot
if run off keep getting lower , then your underfeeding.


I think its enought clear. You can find those information googling, if your willing to spend sometime instructing yourself.
gl
 
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hotrodharley

hotrodharley

Well-Known Member
weedemart said:
Did you ever heard about salt leaching? ... salt are not stuck in medium .... water till you have have 10-20% run off is a simple way to avoid buildup.if his plants suffer from overfeeding then , reducing ec will correct the situation without stressing more the plants.

Watering with pure water will correct the N excess but will induce defiency and further stress the plants more.


do your search your self , im done sourcing things i knew for years.
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YOU have never take basic chemistry or plant science either. You are talking bullshit.Look up "leaching" before you run on. Try reading some actual plant science articles with valid research and this leaves out marijuana, eh? Read up on irrigation of crops and soaking with water to leach the salts left from the prior years crop you dumb shit.
 
hotrodharley

hotrodharley

Well-Known Member
Until one of you with actual science background can post sources nullifying these links I suggest newer to plants READ and LEARN and not all of it from people posting here. Marijuana is a plant and not a frigging exotic one either, eh? It IS another plant, eh?

http://www.wikihow.com/Revive-an-Overfertilized-Plant

http://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/fertilizer-burn-in-gardens.htm

http://homeguides.sfgate.com/flush-overfertilized-soil-22638.html

Geez I can find nothing on the stupid as shit advice to give even fucking more fertilizer. Hmmmm. Weedemart, the world awaits your expertise. With links please.
 
hotrodharley

hotrodharley

Well-Known Member
http://www.aos.org/Default.aspx?id=125

"Treatment
If the damage is done and an orchid injured through overfertilizing, the road to recovery starts with decanting the orchid, removing all of the old medium and thoroughly flushing the roots with plain water to remove accumulated salts. Next, repot the orchid using fresh clean medium and a new pot. Keep the plant shaded and shield it from temperature extremes as you would any recently repotted plant, watering regularly and reintroducing a dilute fertilizer once the plant begins to establish."

ONCE the plant is back on its feet THEN fertilize.
 
weedemart

weedemart

Well-Known Member
just ''wow''. i'll let you convince yourself. you sound like an expert in overfeeding situation, im not, i dont overfeed my plant often but when I do, they recover as fast as the problem showed just by feeding them lower ec. im not gonna post any source , i dont like to feed troll and im done here , i was giving advice to OP ,not arguing with a retard upset kid.
 
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B

BigGreenThumb

Active Member
If you feed a plant and notice heavy clawing 24 hours later, would it be best to flush it right away, or wait until it dries out? Would flushing right away cause an “overwatering” issue since the medium is still very wet? Not sure which is worse in the situation..
 
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