Silicon liquid 40D is a liquid silicon product based on 40% silicon dioxide SiO2, with very small particles. In addition, due to their kinetics and pH-value, these particles do not have the affinity to couple together, as a result of which this liquid silicon product is very well absorbed by plants.
In addition, the readily absorbable hydrolyzed SiO2 solution also contains the silicon silicate (Si(OH)4) in the maximum amount of 3%. This is possible, among other things, because the hydrolysed product has a pH-value of around 3,5. This ensures that the directly absorbable form of silicic acid remains in solution. You then have a product with both the directly absorbable form Si(OH)4 silicic acid and a readily absorbable hydrolysed form of silicon SiO2.
The product is available in IBCs of 1000 liters.
Silicon: What is silicon?
Silicon is, after oxygen, the most common element on earth, which consists of about 28% to 40% silicon. So the soil is rich in silicon. Plants feed on minerals, including silicon. A number of cereals containing a lot of silicon are listed here in order of high to lower quantities: oats, millet, barley, wheat and potato. But also the following foods naturally contain silicon: horsetail, nettle, rice, hops (think of beer!), red onion and beetroot.
Can a silicon product be absorbed by plants through the leaves?
Yes, practically mainly only through the leaf. The particle size of the silicon product ultimately determines how much can go into solution. The larger the particles, the lower the silicic acid content and the less the absorbency. Silicon in a well-absorbable form often has a direct positive effect on the resilience of plants. This is usually done via one or more additional leaf sprays.
Since the silicon in this silicon product is present in very small particles, this silicon product can be absorbed quickly and easily via the leaf. The plant and the leaf regain its natural resistance by rapidly absorbing silicon. The silicon accumulates after one or more leaf sprays and is then incorporated as part of the cell walls in plants.
Silicon: What does silicon do in nature?
Silicon is an important mineral. For example, research has shown that certain crops on a silicon-rich soil thrive much better than crops that do not have access to a silicon-rich environment. Where a lot of silicon was absorbed by the plants, they saw larger, healthier and stronger crops and therefore a better harvest!
Silicon: agriculture and Silicon
It has been known for decades (probably for much longer) that silicon is an essential mineral in obtaining a good harvest. In agriculture, silicon is often used today, either as soil fertilization so that the plants can absorb more easily.
Silicon: what types of silicon sources are there?
Silicon is also used in organic agriculture, often in the form of SiO2 and Si(OH)4. But especially in non-organic agriculture, it appears that very different forms of silicon are used. Some examples of forms that are used are listed below: stone meal, pit lime, converter lime, thomas lime, calcium, sodium and potassium silicates (Na2SiO3 and K2siO3), silicic acid, slag with calcium silicate, silica gel, siliforce. etc. This list makes clear that there are very many forms of silicon in circulation, which can be used in agriculture for, among other things, the use as fertilizer.
- Diatomaceous earth - or kieselgur - is a clay mineral with a high silicon dioxide content (80-90%). In addition, it can also contain some iron and aluminum. If sieved on small particles, these small particles (if properly treated) can partially dissolve in a colloidal form and be used for leaf feeding. It makes no sense to use silicon in any form via the soil.
- Sodium silicate is also called water glass. It has an extremely high pH value and is not suitable for agricultural applications in this form. The sodium atom ensures that it remains easier to suspend. The high pH value is a stumbling block for plant-friendly applications.
- Silica gel can be used if it is sufficiently dissolved in water. It contains sodium and is therefore not suitable for use as a leaf food in high doses.
Silicaforce claims to contain silicic acid. In addition, some minerals have been added. This can disturb the already delicate kinetic equilibrium of silicic acid SI(OH4) in solution. Moreover, it is impossible from a kinetical point of view to keep more than 9 mmol / liter of silicic acid in solution. It is automatically returned to SIO2 (silicon dioxide).
- Potassium silicate is a synthetically produced potassium-silicon compound. It can be used as a fertilizer.
- Calcium silicate is a natural form of calcium with silicon. It is extracted from limestone.
Stone meal, also known as Pit lime or Limestone, is finely ground rock that is used as soil improver and fertilizer. For a functional effect in the soil, stone meal must have a maximum grain size of 0.100 mm. More coarsely ground rock is called stone grit and is less effective in the soil. The finer grounded the rock, the faster the effect in the soil. Stone meal extracted at the British coast contains more calcium (chalk cliffs) and is also called calcium silicate.
Thomass slag flour - also called Thomass flour or Converter lime - is a phosphate fertilizer made from finely ground blast furnace slag from phosphate-rich iron ore or pig-iron.
For example, stone meal is used to provide the soil with extra calcium, or lime. Often, stone meal types come from volcanic rock (slag from the iron ore industry). Slag is a by-product that arises during the production of iron. The pure iron is extracted by adding calcium to iron ore. The residue, also called slag, consists of calcium bound to the minerals from the iron ore, such as lime, iron, magnesium and sodium, but also heavy metals. This slag often contains more than 10% silicon but also other (toxic) substances!
Little is known about the fineness and purity of this slag, but it has a huge influence on the effectivity. Quantitative data on the effect of stone meal are hardly available. Expectations are that the availability of Si in stone meal is low. For a better availability, the Si must first be opened up as it were. Stone meal is administered in tons per hectare. However, there are hardly any results showing that the Si works in stone flour.
So when silicon is talked about in agriculture, the crucial question is: which forms of silicon are we actually talking about and what is the particle size? This means that there are huge differences between all silicon products. The particle size eventually determines how much can go into solution. The larger the particles, the lower the silicic acid content and the less the absorbency.
The particle size of a silicon product and the environment are the determining factors for the absorption. The silicon in potassium silicate, calcium silicate, stone flour, pit lime, limestone, Thomass slag flour / Thomass flour, Converter lime or calcium silicate can not be included in the leaf. Since there is more than enough silicon in the ground, soil treatment with silicon is useless. The plant gets silicon from the ground where it can.
What is Silicon Liquid 40D?
Silicon liquid 40D is a liquid silicon product based on 40% hydrolyzed silicic acid (silicon dioxide SiO2), with very small particles, making this liquid silicon easily absorbable. This indicates that it is also miscible with other liquid fertilizers, but this must first be tested. To mix Silicon Liquid 40D, it must first be diluted and only then can it be mixed with other fertilizers.
What is the difference between Silicon dioxide (SiO2) and Silicic acid (Si(OH)4)?
The difference between SIO2 and Si (OH4) or silicon dioxide and silicic acid (also called orthosilicic acid) are the 2 hydrogen atoms. Silicon dioxide even consists of particles in a colloidal form. With 2 H atoms added you have a solution. You can force this by, among other things, bringing the pH value to 14 (reversed acid is also an option). Unfortunately, the moment you are diluting it with water, the vast majority becomes silicon dioxide again .
The so-called synthetic silicon dioxide products are treated with caustic soda to a pH value of 14. At this pH value everything dissolves, including sand. Then it is forcefully blown through a flame. Next silicon dioxide is formed in extremely small particles. These extremely small particles have less trouble taking a few hydrogen atoms.
Unfortunately, this is only possible if there is not too much other silicic acid nearby. As explained before: when there are too many particles you get regression to the original material. This also happens in nature.
There are products with silicon on the market that have been stabilized, based on choline and claim a high intake. Is that true? Are these products actually better? This also applies to this type of silicon products: whether they are bound to sodium, carbon or mixed with choline or caustic soda, it does not matter. There is no stability in water above 9 mmol / liter. In other words: the moment you start diluting it with water, the vast majority will become dioxide again. The inclusion of Silicon Liquid 40D is therefore just as good, but more economical. You only need to use relatively little.