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Silicates are widely used as silicon fertilisers. Different granular, liquid and powdery formulations are developed for the use on hydroponics, mixing in potting soil and foliar fertilisation. Other well-known sources of silicon are: basic slag, cement, diatomaceous earth, rice chaff, rice hulls and water glass. Calcium silicate is widely used for liming.
Silicon nutrition runs a continuous extending overview of silicon products. If you click on the pictogram, you will get access to a searchable database with hyperlinks to the manufacturers of the silicon products.
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