Sohum living soil potassium deficiency

Smiffy2k9

Smiffy2k9

Well-Known Member
Heys lads, im growing fast buds gorillia glue autos in sohum living soil. Im using homemade 2.8 liter sips as im limited by space. Since starting the grow ive learned this is not enough soil to provide the plant with enough nutes for the entire grow. One of the plants has what i think is a potassium def.

I had a google and came across banana tea. How many skins per liter of water and then will i need to dilute this before top feeding? Or is there a better option?

Also what can i add to the soil to give it a boost for the next run of plants ill be starting at the weekend?

 
IIReignManII

IIReignManII

Well-Known Member
Maybe a kelp topdressing followed up by a kelp and alfalfa compost tea? Maybe a splash of langebeinite and azomite in there?
 
ShLUbY

ShLUbY

Well-Known Member
You’d be much better off using a larger pot and growing one bigger plant. That small of a pot just isn’t enough. You’ll get much better results with bigger pot with one plant.
 
Smiffy2k9

Smiffy2k9

Well-Known Member
ShLUbY said:
You’d be much better off using a larger pot and growing one bigger plant. That small of a pot just isn’t enough. You’ll get much better results with bigger pot with one plant.
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I used to use a bigger pot, but wanted to give perpetual growing a go, i might have to cut it down 2 pots instead of six
 
kratos015

kratos015

Well-Known Member
Are you certain it's a deficiency?

Excess Calcium in your soil will lock out Potassium as well as Magnesium. Look around for Magnesium deficiencies too. If you have both Mg+K deficiencies then the issue is too much Calcium.

Running low on K is somewhat uncommon, so I'd be more inclined to check Calcium levels before anything else. You want to be absolutely certain you have a deficiency before correcting it, otherwise you'll just create more problems.

I only know of this because my water is from a well that is heavily calcified. So calcified in fact that every time I water is like adding Dolomite Lime. Eventually, my water combined with my Oyster Shell Flour, Gypsum, and Crab Meal resulted in excess Calcium which locked out both K and Mg as well as shot my pH through the roof.

I had to switch to RO water from water machines until the cycle was over. Then I made a new batch of soil without any Calcium in it so that I could continue to use my well water without any issues.

Edit: The leaf on the bottom right hand corner almost looks like a Mg deficiency to me. What kind of water are you using and how much do you know about the water in terms of what's actually in it? How many of your soil amendments have Calcium in them? Use CalMag lately or anything of the sort?
 
MustangStudFarm

MustangStudFarm

Well-Known Member
Smiffy2k9 said:
Heys lads, im growing fast buds gorillia glue autos in sohum living soil. Im using homemade 2.8 liter sips as im limited by space. Since starting the grow ive learned this is not enough soil to provide the plant with enough nutes for the entire grow. One of the plants has what i think is a potassium def.

I had a google and came across banana tea. How many skins per liter of water and then will i need to dilute this before top feeding? Or is there a better option?

Also what can i add to the soil to give it a boost for the next run of plants ill be starting at the weekend?

Click to expand...
Show us a pic of the whole plant. Is it affecting new or old tissue, it will tell if it is a mobile nutrient or not. It could even be a micronutrient deficiency. The yellowing is called chlorosis and it is caused by several different things. Like, iron chlorosis is a generic term for micro def. I often have Mn def that causes spots and chlorosis.
 
Smiffy2k9

Smiffy2k9

Well-Known Member
MustangStudFarm said:
Show us a pic of the whole plant. Is it affecting new or old tissue, it will tell if it is a mobile nutrient or not. It could even be a micronutrient deficiency. The yellowing is called chlorosis and it is caused by several different things. Like, iron chlorosis is a generic term for micro def. I often have Mn def that causes spots and chlorosis.
Click to expand...
I dont have any recent pics of it. It was effecting older growth, i fed it with a banana tea and the problem seems to have stopped for now anyways, well it hasnt spread, the affected leaves have continued to get worse an i think i have pulled them now.

Another plant i have has problems now though, the whole plant has turned light green and there doesnt seem to be as many pistils showing and they aren't as big as the pistils on the other 2 which are the same age.

I'll get a photo of them tonight when im home
 
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Smiffy2k9

Smiffy2k9

Well-Known Member
kratos015 said:
Are you certain it's a deficiency?

Excess Calcium in your soil will lock out Potassium as well as Magnesium. Look around for Magnesium deficiencies too. If you have both Mg+K deficiencies then the issue is too much Calcium.

Running low on K is somewhat uncommon, so I'd be more inclined to check Calcium levels before anything else. You want to be absolutely certain you have a deficiency before correcting it, otherwise you'll just create more problems.

I only know of this because my water is from a well that is heavily calcified. So calcified in fact that every time I water is like adding Dolomite Lime. Eventually, my water combined with my Oyster Shell Flour, Gypsum, and Crab Meal resulted in excess Calcium which locked out both K and Mg as well as shot my pH through the roof.

I had to switch to RO water from water machines until the cycle was over. Then I made a new batch of soil without any Calcium in it so that I could continue to use my well water without any issues.

Edit: The leaf on the bottom right hand corner almost looks like a Mg deficiency to me. What kind of water are you using and how much do you know about the water in terms of what's actually in it? How many of your soil amendments have Calcium in them? Use CalMag lately or anything of the sort?
Click to expand...
I think it was a def anyways, i wouldnt be the best at diagnosing it, my only method is check against the various plant problem charts on the web.

The water im using is store bought still water, and tap water left out for 24hours. I couldnt tell you the make up of the soil, i havent looked that far into it, sohum living soil is the brand.

All i have gave these plants is straight water, expect for the 150ish ml of banana tea.
 
Smiffy2k9

Smiffy2k9

Well-Known Member

thats the one i suspected of the potassium def

And


thats the one thats is a lighter green than the rest and has smaller and less pistils than the others
 
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