Kevin Vernoy wrote:Are there any soil-chemists here? After a lot of online research, I'm still confused and here to ask: Is there a method of determining the resulting pH after combining two soils of equal mass and density but with different known pH values?
Kevin Vernoy wrote:Are there any soil-chemists here?
Is there a method of determining the resulting pH after combining two soils of equal mass and density but with different known pH values?
Is lime different than other alkaline soil additives?
Does something like azomite have neutralizing effects because of ion exchange too?
Are certain soil compounds more free to exchange ions than others?
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Kevin Vernoy wrote:Are there any soil-chemists here? Is there a method of determining the resulting pH after combining two soils of equal mass and density but with different known pH values?
For instance:
If both soilA (with pH of 5) and soilB (with pH of 8) both weigh 1kg and each have a volume of 1liter, then what would be the pH if you mixed the two?
I tried to apply this situation into the equations given in this video, and I came out with a pH of: -log((10^-5+10^-8)/2) = 5.3
Did I do that right?
Even if I did, I have a strong feeling that things aren't that simple for soils, due to the multitudes of different chemical compounds that might react with one another in order to create a much different soil chemistry and therefore pH.
Therefore it's my belief that there's no real way to do this without simply testing the resulting soil. Which brings me to my next question:
Is lime different than other alkaline soil additives?
My reasoning for asking is that I'm making seedballs and I'd like the pH to be around 6 or so. The major component is Red Clay which sometimes has a pH of 4 to 5 and I was thinking of mixing it with azomite (pH of 8), and possibly ag lime (pH of 12.4) to raise the pH. Another thread mentions that ag lime "has its neutralizing effect on acidic soils by ion exchange". Does something like azomite have neutralizing effects because of ion exchange too? or is Azomite (Hydrated Sodium Calcium Aluminosilicate) not active in such a way and would therefore only raise pH based on the equations in the previously mentioned video? Are certain soil compounds more free to exchange ions than others?
Thanks.
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