P-Olsen could be used in a wide range of soil pH. But, some scientists believe P-Olsen is only for alkaline soils! Is there any comment about it?

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Frank Omoregie

I Know it is basically used for alkaline Assay but for other assays like acidic soil, it may not yield a positive result.

Tadele Amare Kassie

Dear Frank Omoregie, thank you very much for your response. Do you the experience working on acidic soils with this extraction? Did you see the literature in the acidic areas of the world with this extraction? I could refer you to Pedro A. Sanchez (2019). Properties and Management of Soils

in the Tropics, page 406, Table 14.9 states that P-Olsen is used in a wide range of pH! You can get it on: www.cambridge.org/9781107176058

DOI: 10.1017/9781316809785