What Is the Ph (soil Reaction) of Humic acid , Fulvic acid and Humin?

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J. C. Tarafdar

@ Manimaran, normally the pH of humic acid is 6.0. The pH of fulvic acid varies between 6 and 7 and the pH of humin is generally 13.

Paul Milham

The fractions have functional groups with a large range of pKa values. I wouldn't necessarily describe them as having a particular pH

Puvan Paramisparam

Kindly read through this review to answer your question.

Article Co-Application of Charcoal and Wood Ash to Improve Potassium...

Muhammad ad Adnan

Since these are weak acids, hence pH lies between 6-6.5 in normal routine cases.