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Discussion of Scientific Literature

Subject:  Silicon as silicic acid

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Gerald UK

Watlington, UK

"The silicon content of soils is (very) high, with an average of 28% Si by weight. The vast majority of Si compounds in the soil consists of silicon dioxide, silicate minerals and aluminosilicates, none of which are available for plant uptake. The only plant bioavailable silicon compound is monosilicic acid (MSA; synonym: orthosilicic acid: OSA), the concentration of which is (very) low in the soil."


Summary here:


5/11/2020 5:19:54 PM

big moon

Bethlehem CT

Thanks for posting this Gerald.

5/11/2020 7:01:10 PM


Central Illinois

Anyone know how to mix Silicic acid powder into a liquid and the rate of use

1/12/2021 7:27:35 AM

26 West

Urban Prior

Greenstar Plant Products Inc. perhaps these people can help. Jim

1/12/2021 11:11:18 AM


Seattle, WA

Many folks are using a product called Agsil 16H. It's potassium silicate. We carry it on our website. It's what is in most of the "silica" products online like Dynagro ProTekt, just in a powdered concentrated form.


2/14/2021 1:27:55 PM


Seattle, WA

Here's a good article on the benefits of silicon: https://ufdcimages.uflib.ufl.edu/IR/00/00/17/26/00001/EP07500.PDF

2/14/2021 1:28:55 PM

big moon

Bethlehem CT

Thanks for posting the link for that article Tad.

2/15/2021 8:28:52 AM

Tom K


I have used Sili-K liquid and the Agsil 16H that Tad sells sparingly over the last 2 seasons. My advice is to test the fertilizers that you use in a jar test with these products as they tend to precipitate out. May want to use them by themselves especially with drip tape and rinse well.

2/15/2021 11:21:04 AM

Total Posts: 8 Current Server Time: 5/16/2022 6:36:26 PM
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