Silicon in plants
by Chris, 9 July, 2018, 1 comments
Oxygen, silicon and aluminium are the three most common elements in the Earth’s crust; the aluminosilicates (and related compounds) make up up much of the inorganic skeleton of the soil. So, though silicon is abundant in nature, silicon is rarely talked about in terms of plant nutrition. People speak of nitrates, phosphates, potassium, and NPK fertilisers,; however, the Chinese make use of some thirty million tons of silicon fertiliser a year.
Certain plants are known to make use of silicon (especially the grass family - the Poaceae, formerly the Graminae). Plants take up silicon (in the form of monosilicic acid) and transport it within their tissues, often depositing in the form of silica aka silicon oxide (SiO2). In grasses, silica can make up 2 - 5% of the dry leaf mass. Read more...