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Silicon (is a chemical element of symbol Si atomic number 14 (14 protons and 14 electrons) with atomic mass equal to 28 u. Considered a beneficial element for plants.

SILICON SOURCES

It is found in nature in the form of oxides (SiO2), forming part of rocks, sand and clay. It combines with Al, Mg, Ca, Na, K or Fe, forming silicates. Its compounds are also in natural waters in the atmosphere, such as Si powder, and organic compounds tissues of some plants. In the soil solution is as Monosílico acid, H 4 SiO 4, whose shape is absorbed.

SILICON IN AGRICULTURE

Silicon is deposited in amorphous form in plant cell walls, contributing to the rigidity and elasticity. The Si is only required for species Equisetáceas family (horsetail), to complete its life cycle.

PHYSIOLOGICAL FUNCTION

  • Strengthening the physiological structure;
  • Increased productivity;
  • Resistance to pests and diseases;
  • Reducing the effects of excess of potentially toxic metals, salt stress and drought stress;
  • Lodging resistance.

SILICON ABSORPTION WAYS

Silicon is absorbed as Monosílico acid, H 4 SiO 4.

SILICON DEFICIENCY SYMPTOMS IN PLANTS

Si deficient plants are brittle and susceptible to fungal infections.

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