Nute Burn? Or lack of Specific Nute?

Currently growing a plant outdoors on a balcony (direct sun) and moving it into my closet every night for 13/14 hours of complete darkness. It is only in its 1st week of flowering but I'm noticing the leaves starting to brown around the edges. It's growing in organic seed starting soil (have never had this problem among several grows before in the same medium). It gets water every time the soil dries so I know it's not an issue with that. Thanks for all of your help in advance.

Cheers,

Can anyone help this?

i see 3 potentials
nute burn, calcium def or magnesium def

if you've used this soil before with no issues and you haven't added any fertilizer? have you?

then its not likely nute burn

so if you haven't yet added fertilizers I would add some Epsom salt 1/4 tsp and maybe some calmag 2 to 4 mls per gallon

im4satori said:

i see 3 potentials
nute burn, calcium def or magnesium def

if you've used this soil before with no issues and you haven't added any fertilizer? have you?

then its not likely nute burn

so if you haven't yet added fertilizers I would add some Epsom salt 1/4 tsp and maybe some calmag 2 to 4 mls per gallon

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I had been giving it SVA and SVB for the veg stage -- recently I switched to half doses of fox farms bloom for the first two weeks of flower, but stopped giving it nutes all together this past week

id water with 1/4 tsp Epsom salt and 2 to 4mls calmag only until the lower leaves show the first signs of yellowing

then start in with the nutes at 1/2 strength every other watering

if you want help with how to mix your fertilizers youll need to give me the npk numbers of each bottle

Back up and take a whole plant pic.

What type water? How much and often do you water?

What nutes? How often and how much?


Seed starting medium is usually void of all nutrients. It probably needs all macro and micro nutrients.

whitebb2727 said:

Back up and take a whole plant pic.

What type water? How much and often do you water?

What nutes? How often and how much?


Seed starting medium is usually void of all nutrients. It probably needs all macro and micro nutrients.

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that's a good point about the seed starting soil sorry I missed that

good catch

whitebb2727 said:

Back up and take a whole plant pic.

What type water? How much and often do you water?

What nutes? How often and how much?


Seed starting medium is usually void of all nutrients. It probably needs all macro and micro nutrients.

Click to expand...

I water it with 'vending machine' refillable Glacier water. I wait until the soil is dry and the pot feels empty, or until the leaves just start to droop. Then I water until the soil is completely soaked and about a tenth of it runs out the bottom of the pot.

Was giving it SVA and SVB for approx 2 months NPK is 2.5-0-2.5 and 1.0-0.2-5.0. I'd put 4 tsp of each into a gallon. I'd put in the SVA, then water, then SVB. I'd only feed it once a week, or more accurately every third watering. I stopped feeding it about 4 weeks ago. My friend gave me a small bottle of Fox Farms Bloom liquid fertilizer without a bottle so I don't have the NPK. But 3 weeks ago I gave it about 4 teaspoons a gallon until I used it up (I still watered three times before feeding again). Now I haven't given it any nutes for about a week and am going to go buy some right now. I will have the NPK after, depending on what I get.

In the picture below it's the closer of the two, better framed in the second.

a more appropriate dose for your fertilizer would have been 10mls of each per gallon
every second or third watering

your fertilizer ratio is very high in K which adds to the potential for calcium and magnesium issues

so my advise still stands

water plain water only with 1/4 tsp Epsom salt and 2 to 4 mls calmag

don't add any additional fertilizers until lower leaves show yellowing

hopefully the fertilizer you purchase today is better than the one your using if its not too late I would recommend some brands that are well balanced

That don't look bad really.

Don't let that seed starting mix get too dry. It becomes hydrophobic. It will develope dry pockets.

Water them lightly and then again fully in about 10 minutes. Moist soil will absorb more moisture.

Chronic under watering can cause necrosis and brown spots.

4 tsp of each is high by any standard

that 185ppm N and 329ppm K

nute burn.... just had the same issue.... distilled water for a week....perfect new growth.

Newsprout said:

Currently growing a plant outdoors on a balcony (direct sun) and moving it into my closet every night for 13/14 hours of complete darkness. It is only in its 1st week of flowering but I'm noticing the leaves starting to brown around the edges. It's growing in organic seed starting soil (have never had this problem among several grows before in the same medium). It gets water every time the soil dries so I know it's not an issue with that. Thanks for all of your help in advance.

Cheers,

Click to expand...

That is a potassium deficiency, im not sure what is causing that.

I would say maybe because its lacking potassium? If it was lockout it isnt locking any other nutrient out. Maybe you have too much in your soil or nutrient and its blocking it out?

jensenbeach1 said:

That is a potassium deficiency, im not sure what is causing that.

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I agree it does look like it could be K

except his fertilizer is so heavy in K

so im thinking magnesium... high K only making it worse

but im not sure, its a guess, I could be completely wrong

im4satori said:

I agree it does look like it could be K

except his fertilizer is so heavy in K

so im thinking magnesium... high K only making it worse

but im not sure, its a guess, I could be completely wrong

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I'm still learning as it comes to deficiencies I can visually tell you whats wrong, but finding the culprit usually does take a minute. Id like to learn more about the relationship between the nutrients, aka too much of this nute blocks out this one. I was under impression if it was loaded with any 1 nutrient you would see a burn no matter. Or does that only happen when there are several lockouts present?

jensenbeach1 said:

I'm still learning as it comes to deficiencies I can visually tell you whats wrong, but finding the culprit usually does take a minute. Id like to learn more about the relationship between the nutrients, aka too much of this nute blocks out this one. I was under impression if it was loaded with any 1 nutrient you would see a burn no matter. Or does that only happen when there are several lockouts present?

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nutrient burn occurs from high salinity
no mater what the elements

if you really want some grade A educational material get this book

but its not cheap
hydroponics
a practical guide for the soiless grower

buy
J. Benton Jones Jr

im4satori said:

nutrient burn occurs from high salinity
no mater what the elements

if you really want some grade A educational material get this book

but its not cheap
hydroponics
a practical guide for the soiless grower

buy
J. Benton Jones Jr

Click to expand...

I am now a soil grower . I will have to read it though if it helps me better understand that bond they have. Thanks for the suggestion.

A good read.

Teaming With Microbes.

It is for organic growing but still a lot of good knowledge in it.

whitebb2727 said:

A good read.

Teaming With Microbes.
View attachment 3962064
It is for organic growing but still a lot of good knowledge in it.

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I will definitely have to pick that up, Id love to be able to achieve a just water crop all organic. Goals, haha. Thanks for both the literatures. Im not the reading type but im sure I will get indulged into that since im interested in it.