Phosphorus deficiency and incorrigible pH

GroBud

GroBud

Well-Known Member
When using liquid nutrients those nutrients have to be a certain ph to be absorbed. Using organic amendments you dont neccesarily feed plants. The amendments are slow released in how they break down, and feed microorganisms they poo and feed the plants. Liquid nutrients however are readily available for plants consumption. Liquid nutrients need to be ph 6.3-6.7. Soil ph is important but not as important as the nutrients ph.
 

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Lenin1917

Lenin1917

Well-Known Member
Flush with ph 6.5 water, amend soil with lime 1/8cup for 5gallon pots, continue watering with proper ph water 6.5. You’re in potting soil so keep it simple, water in your base nutrients and stop adding so much extra stuff.
 
Darkoh69

Darkoh69

Well-Known Member
GroBud said:
When using liquid nutrients those nutrients have to be a certain ph to be absorbed. Using organic amendments you dont neccesarily feed plants. The amendments are slow released in how they break down, and feed microorganisms they poo and feed the plants. Liquid nutrients however are readily available for plants consumption. Liquid nutrients need to be ph 6.3-6.7. Soil ph is important but not as important as the nutrients ph.
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Well said
 
PurpleThai

PurpleThai

Member
GroBud said:
When using liquid nutrients those nutrients have to be a certain ph to be absorbed. Using organic amendments you dont neccesarily feed plants. The amendments are slow released in how they break down, and feed microorganisms they poo and feed the plants. Liquid nutrients however are readily available for plants consumption. Liquid nutrients need to be ph 6.3-6.7. Soil ph is important but not as important as the nutrients ph.
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Is this only the case for synthetic fertilizers or both? I mean, for liquid organic fertilizers, at different pH there not should be different type of microbs that poop different form of nutrients in a way available ( or not available) for the plants?
 
GroBud

GroBud

Well-Known Member
PurpleThai said:
Is this only the case for synthetic fertilizers or both? I mean, for liquid organic fertilizers, at different pH there not should be different type of microbs that poop different form of nutrients in a way available ( or not available) for the plants?
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Even organic liquids like concentrated worm juice diluted, fish poo, kelp me kelp you, wholly mackeral that's all liquid nutrients and readily available for plant consumption. I use organic waterings for immediate plant health, or well being. They like to be treated in moderation

The poop is liquid which plants can consume the liquid nutrients are liquid so plants can consume. There aren't different kinds of microbes in that sense. If you choose to use liquid nutrients as a feeding regiment, you're not catering to your medium you dont need to you are providing readily available nutrients to your plants. Using organics ( dry amendments) you cater to the living biology within the soil or rhizosphere. ( root zone ) because without those organisms your plants dont get any food.
 
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PurpleThai

PurpleThai

Member
GroBud said:
Even organic liquids like concentrated worm juice diluted, fish poo, kelp me kelp you, wholly mackeral that's all liquid nutrients and readily available for plant consumption. I use organic waterings for immediate plant health, or well being. They like to be treated in moderation

The poop is liquid which plants can consume the liquid nutrients are liquid so plants can consume. There aren't different kinds of microbes in that sense. If you choose to use liquid nutrients as a feeding regiment, you're not catering to your medium you dont need to you are providing readily available nutrients to your plants. Using organics ( dry amendments) you cater to the living biology within the soil or rhizosphere. ( root zone ) because without those organisms your plants dont get any food.
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Got it, thanks!
 
xtsho

xtsho

Well-Known Member
PurpleThai said:
The last 3 weeks yes all at ph 4, it's so low to try to lower the soil's pH for a longer time than just a day (anyway it is pH 5 once the water is in soil) , yes it is madness ph 4 but im out of my mind because I just can't fix this
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That's your problem. Stop checking the soil pH and trying to lower it by feeding with a pH of 4. You're not going to fix anything doing that. You're just making things worse.

You're killing those plants with all the stuff you're dumping on them and playing around needlessly with the pH. If you had given them nothing but plain water they'd be healthier than they are now.
 
PurpleThai

PurpleThai

Member
xtsho said:
That's your problem. Stop checking the soil pH and trying to lower it by feeding with a pH of 4. You're not going to fix anything doing that. You're just making things worse.

You're killing those plants with all the stuff you're dumping on them and playing around needlessly with the pH. If you had given them nothing but plain water they'd be healthier than they are now.
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I’m not doing that anymore, but my plants still look so bad, I have no more ideas
 
PadawanWarrior

PadawanWarrior

Well-Known Member
PurpleThai said:
Hi! I'm having problems with these plants (different genetics, same problem), and I don't know what to do anymore, I hope to get some help from someone better than me.
My plants are showing something I think is a severe phosphorus deficiency with purple branches:
2 months ago I bought a cheap pH meter for soil, giving me a result of pH 8, I dind't give attention to this value since the meter was cheap and problably not working, a week later I tested the run out water and confirmed pH 8. From that moment I tried a lot of different products to acidify my soil, started with a pH down made for weed, it didn't work, so I bought citric acid, it acidified (pH 6) my soil for just a day, and the day later the pH was 8 again, the next weeks I watered always with a bigger amount of citric acid, it acidified my soil down to pH 4, but only for the first day, the day later was 7.5/8 again... this last week I tried with vegan vinegar, and I got the same result, actually it went pH 8 even faster. I don't know what I can try anymore and my plants are starting to die and I'm losing all my leaves, please help!!
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You can't fully trust runoff. If you use acids it will flush out some of that Ca and stuff so the pH of the runoff will actually read higher than the soil itself. It can be used as a guide if you know a few things though, and monitor it enough, but to get an accurate reading you need a good pH pen or probe.
 
PurpleThai

PurpleThai

Member
Little update:
It’s almost 2 weeks now that I’m watering with only water (pH 6.5).
My plants do not show improvements, branches and veins are purple, leaves are yellowing and are falling down, some of them are necrotic, growth is stunted.
Today I started to use some nutrients again (balanced npk 395ppm), some water came out from the pot so I tested the pH, its pH was of 7.5 or higher, this means that once in the soil even my nutrient solution from 6.5 it raises again asap. I also tested the ppm, 395 to 405, but this one might be wrong since probably I didn’t have enough water for the ppm pen, but in my opinion, this value seems right.
This fallen leaf has a strange bluish spot, phosphorus? I dont know anymore…
 

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PadawanWarrior

PadawanWarrior

Well-Known Member
PurpleThai said:
Little update:
It’s almost 2 weeks now that I’m watering with only water (pH 6.5).
My plants do not show improvements, branches and veins are purple, leaves are yellowing and are falling down, some of them are necrotic, growth is stunted.
Today I started to use some nutrients again (balanced npk 395ppm), some water came out from the pot so I tested the pH, its pH was of 7.5 or higher, this means that once in the soil even my nutrient solution from 6.5 it raises again asap. I also tested the ppm, 395 to 405, but this one might be wrong since probably I didn’t have enough water for the ppm pen, but in my opinion, this value seems right.
This fallen leaf has a strange bluish spot, phosphorus? I dont know anymore…
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Are you adding salts now? I thought you were doing organics.
 
PurpleThai

PurpleThai

Member
PadawanWarrior said:
You can't fully trust runoff. If you use acids it will flush out some of that Ca and stuff so the pH of the runoff will actually read higher than the soil itself. It can be used as a guide if you know a few things though, and monitor it enough, but to get an accurate reading you need a good pH pen or probe.
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I rarely test run off, I don’t need to do that since I have a pen that directly tests soil’s pH
No added acids this time, my nuts are enough to get the pH to 6.5
 
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Lenin1917

Lenin1917

Well-Known Member
Darkoh69 said:
Please dont use lime unless your conditioning the ground your about to grow in outside
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Why not? Just wear gloves and don’t sniff it. Do you think potheads at incapable of handling moderately hazardous materials or something?
 
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