Salts and microbes

myke

Well-Known Member
I fed one of my sips salts,I think once top fed and twice from the res. 1EC .I was surprised to find out after harvest the pH slurry tests showed 7+. I expected it to be lower. Whats up with that? Or was the amount of salts just not enough to do anything?
 

Rurumo

Well-Known Member
I fed one of my sips salts,I think once top fed and twice from the res. 1EC .I was surprised to find out after harvest the pH slurry tests showed 7+. I expected it to be lower. Whats up with that? Or was the amount of salts just not enough to do anything?
Depends on what nutes you used and what your source water is like. You should always PH your nutrient solution before feeding. I have to use quite a bit of citric acid along with my nutrients to get my PH to 5.8.
 

waktoo

Well-Known Member
It can change the diversity of your bacteria however. It will definitely (temporarily) quickly increase the population of bacteria in your soil.

Nitrate ions all around them is like an all-you-can-eat buffet, and they gorge themselves on it as well as any carbon they can get their little paws on. Quick population rise - then fall once the carbon is gone. This may not be a great thing since we want more stable communities to stick around that will glue pieces of our soil together and increase caption exchange capacity at the same time. Plus it's better for the microbiology over the longterm to have a store of carbon in the soil rather than instantly releasing it as CO2 in the atmosphere.

Synthetic fertilizer application begins the destruction of soil biodiversity by suppressing the role of nitrogen-fixing bacteria and enhancing the role of everything that feeds on nitrogen. These feeders then amplify the decomposition of organic matter and humus. As organic matter decreases, the physical structure of soil changes. These changes lead to modulations in various associated soil physiological processes. https://doi.org/10.1016/B978-0-08-103017-2.00002-7

I guess we could all treat our "soil" as just some substrate to offer support to the roots while we feed it soluble salts every watering. But that's really hydroponics - not organic from any definition I could wrap my mind around.
You left out some important context...

Synthetic fertilizer application begins the destruction of soil biodiversity by suppressing the role of nitrogen-fixing bacteria and enhancing the role of everything that feeds on nitrogen. These feeders then amplify the decomposition of organic matter and humus. As organic matter decreases, the physical structure of soil changes. These changes lead to modulations in various associated soil physiological processes. However, there are several contradicting reports on above mentioned negative impacts of pesticides and synthetic fertilizers.

Here's an excerpt from, and PDF of the full chapter for those that are interested...

"The direct effects of the application of synthetic fertilizer on soil microbiota may be positive or negative and depends upon the duration, type, amount, and manner in which the fertilizer is applied."
 

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ComfortCreator

Well-Known Member
I am 99% organic because it is easy, no other significant reason although over time I have appreciated the stronger terpenes and feeling that it is clean compared to some other offerings.

I think being very strict in how one thinks of growing is a limitation more than a positive. People appreciate quality in results, not so much in effort (imo).

Instead I look for insights on things I havent fully considered. When Northwoods brings up bacteria, Nitrogen ions and explains in some detail how they "think" or maybe better said how they operate...I can see an opportunity where during stretch and after, organic can struggle to keep up with the nutrient needs and how we might manipulate it to our benefit.

So here is a question I have and do not know the answer. If you supplement you organic grow with an organic bottled feed, how does that differ exactly from supplementing with a hydro salt based feed? I have done this, but realize I cant say beyond reading it 50x that organic should be fed organic only. Are the N ions in the organic feed less readily available i.e. slower release?
 

Northwood

Well-Known Member
You left out some important context...
It can't be that important considering the full chapter doesn't contradict their summary provided in the Abstract, particularly the effect on the abundance of SOM. It's quite obvious that in soil where bacterial biomass of any type is primarily constrained by available nitrogen, then adding N in any form will increase microbial biomass.
 

Observe & Report

Well-Known Member
What happened is a paper came out studying the effects of artificial chelators like EDTA on some microbes and found that some populations were reduced. Probably not enough to make any difference when we're talking about the kind of container growing happening here and in any event probably not enough research to say definitively one way or the other.

However, that didn't stop the hippie bros who wouldn't know salts from sugars from latching on to it and saying "SEE WE TOLD YOU SALT FERTILIZERS WERE EVIL! I DONT WANT ANY OF THAT HORRIBLE NITRATE NEAR MY PURE LIVING SOIL"

massive confirmation bias is all it is... just like when the paper came out showing some organically grown fruits had slightly higher flavinoid levels it became "SEE PROOF ORGANIC GROWS SUPERIOR SMELLING/TASTING CANNABIS"
 

Samwell Seed Well

Well-Known Member
No such thing as synthetic fertilizers...

That is a marketing term.

It's either is or isn't.... if the outcome is Subjective and conditional then it's not a law/rule of thumb or any other unempirical unscientific representation of statistics and probability...

Only thing you can say for certain is each media will either balance under the mix of any type of added or supplemental fertilizers or it won't. To much bottle or to much amendments has the same effect.

One is just more controllable
 

Northwood

Well-Known Member
No such thing as synthetic fertilizers...

That is a marketing term.
I disagree, at least based on the definition that a synthetic compound is one made through a process that doesn't normally operate in nature. The compound itself may of course be naturally occuring. For example, the industrial synthesis of ammonia through the Haber-Bosch process is only used by humans - and not employed by regular atmospheric or biological processes. All 3 processes fix nitrogen and provide the same product, however synthetically produced N fertilizer requires a great deal of energy and H currently supplied by fossil fuels and thus represents a significant contributor of CO2 emissions. That's the main disadvantage because natural methods of N fixation do not cause emissions. Obviously cost is another factor that must be considered.
 

meangreengrowinmachine

Well-Known Member
Don't burst the living soil bubble, Def don't tell them soil biology converts unusable forms of nutrients to available forms aka chelation...just like the bottled ones
Force feeding aka salts is very different imo then having the organic material readily available for the microbes and rhizomes to have there own cationic exchange. I'm not saying that the force feeding way doesn't work.. but I'm also a person that raises their own chickens to eat so I don't have to eat a chicken that sat on a rack with a feeding tube in its neck. The 2 are comparable to me. I understand not everyone has the same opinion. This is a debate that goes far beyond cannibas.
 

meangreengrowinmachine

Well-Known Member
No such thing as synthetic fertilizers...

That is a marketing term.

It's either is or isn't.... if the outcome is Subjective and conditional then it's not a law/rule of thumb or any other unempirical unscientific representation of statistics and probability...

Only thing you can say for certain is each media will either balance under the mix of any type of added or supplemental fertilizers or it won't. To much bottle or to much amendments has the same effect.

One is just more controllable
So what do you sell ? Lolz
 

Observe & Report

Well-Known Member
No such thing as synthetic fertilizers...
The Nobel Prize in Chemistry 1918 was awarded to Fritz Haber "for the synthesis of ammonia from its elements."

As of 2018, the Haber process produces 230 million tonnes of anhydrous ammonia per year.[48] The ammonia is used mainly as a nitrogen fertilizer as ammonia itself, in the form of ammonium nitrate, and as urea. The Haber process consumes 3–5% of the world's natural-gas production (around 1–2% of the world's energy supply).[4][49][50][51] In combination with advances in breeding, herbicides and pesticides, these fertilizers have helped to increase the productivity of agricultural land
With average crop yields remaining at the 1900 level[,] the crop harvest in the year 2000 would have required nearly four times more land[,] and the cultivated area would have claimed nearly half of all ice-free continents, rather than under 15% of the total land area that is required today.[52]

One of the most important inventions of all time! All of us were born in a world that only exists because of synthetic fertilizer.
 

meangreengrowinmachine

Well-Known Member





One of the most important inventions of all time! All of us were born in a world that only exists because of synthetic fertilizer.

Very true. But if we don't move away from those in our whole sale farm industry our soils will be depleted and bare very soon. There needs to be a better and more sustainable way to feed the world.
 

Samwell Seed Well

Well-Known Member






One of the most important inventions of all time! All of us were born in a world that only exists because of synthetic fertilizer.
Confusing a very specific process term to some other usuage..usage...

Gonna have a bad time

Synthesizing and synthetic... to very different terms...

Synthetic they way organic people want it to be read.

"a synthetic material or chemical, especially a textile fiber.."


Synthetic fertilizer

1.
(of a substance) made by chemical synthesis, especially to imitate a natural product.
"synthetic rubber

And in this case exactly the same formulations usable by a plant..aka the same thing

Like vitamin C...mostly made from mold but also found in many fruits/vegetables
 

myke

Well-Known Member
Depends on what nutes you used and what your source water is like. You should always PH your nutrient solution before feeding. I have to use quite a bit of citric acid along with my nutrients to get my PH to 5.8.
Yes,never did check.From my hydro days I know the nutes do drop the pH,maybe .5. My tap water having calcium carbonate in buffers it back I suppose.
 

Gumdrawp

Well-Known Member
I disagree, at least based on the definition that a synthetic compound is one made through a process that doesn't normally operate in nature. The compound itself may of course be naturally occuring. For example, the industrial synthesis of ammonia through the Haber-Bosch process is only used by humans - and not employed by regular atmospheric or biological processes. All 3 processes fix nitrogen and provide the same product, however synthetically produced N fertilizer requires a great deal of energy and H currently supplied by fossil fuels and thus represents a significant contributor of CO2 emissions. That's the main disadvantage because natural methods of N fixation do not cause emissions. Obviously cost is another factor that must be considered.
Conventional nitrogen fertilizer is also up like 400% right now, it's actually a huge deal and is going to have a large impact on most agriculture globally. It's actually pushing a lot of people to use more organic inputs but all in all it's a mess right now.
 

Samwell Seed Well

Well-Known Member
Um... what.. ? Synthesizing produces synthetic things....
Not necessarily... Vitamin C can be synthesized its still Vitamin C...still a natural substance

Wanting things to be different because of their derivative source is an argument in semantics.... they are different, they are the same..just depends in your agenda
 
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