Perlite is used for cultivation substrate , pure or mixed. But it is interesting to know where it comes to understanding its features and benefits.
Perlite is a natural volcanic rock. Basically it resembles sand containing water. It is industrially expanded by a heat treatment from 900 to 1200 ° C. Under the influence of heat, the perlite expands from 4 to 20 times its volume and shape of small porous grains with tiny cavities. One can visually resemble perlite in white bedding grains, it is very light and crumbly.
silica, alumina, iron oxide, titanium oxide, Lime, Magnesia, Oxides of Sodium, Potassium
Perlite is a substrate very light and easy to handle which makes its implementation in a culture system simple and fast. However, we recommend you wear a masque protection When handling to avoid dust inhalation, and previously moisten to reduce dust generation.
You can use perlite as a substrate in a hydroponics system drip essentially.
You can also associate perlite to another substrate such as soil , coir, peat , but in this case, perlite does not exceed 30% of the entire mixed substrate.
During phase seedlings / cuttings perlite can be mixed with the vermiculite quantity 50 / 50.
However, it is also possible to mix 60% Coco, 30% clay beads and 10% perlite.
For all farmers using the technique of the hydroponics , perlite is chemically very interesting talking with many weight properties:
- neutral pH between 6.8 and 7.2 which allows for better control over the fertilizer and the nutrient solution given your plants.
- Thanks to its porosity, it has a great capacity water retention, up to 5 times its weight.
- Stable and inert, perlite not attract any insects, unlike some soil
- 100% eco , perlite is a natural product < / strong>.
- perlite is easily removed, put in the ground in your garden, for example, it will turn into dust and disappear over time without leaving traces.