WHAT IS PURASIL Purasil is raw Diatomaceous Earth mined from sedimentary layers deposited millions of years ago in a fresh water lake. It is light in weight, chalk-like in appearance, very porous and comprises siliceous fossils of plant algae. It consists primarily of amorphous silica as distinct from crystalline silica or quartz. Amorphous silica is much more soluble than crystalline silica and is not a health hazard.
"Diatomite stimulates healthy growth of plant root systems. It
conditions the potting mix by making silica available to plants and by helping
the roots to retain moisture. Purasil is our unique product aimed at
this market".
TYPICAL PHYSICAL AND CHEMICAL PROPERTIES
The plant available silica content in the range of 300-350ppm is determined from calcium chloride extraction techniques.
Water Absorption a minimum 100% of its own weight.
Melting Point approximately 1500 ēC
Colour White to light grey
Cation Exchange Capacity The measured capacity is 32cmol+/kg
PROPERTIES OF SILICA
Silica, like calcium, strengthens cell walls resulting in robust and eficient plants. Silica improves brix levels and therefore lavour. Plants produce more lowers and pollen is more viable resulting in better fruit set. The CSIRO in Townsville has demonstrated that big increases in yield can be achieved from sugar cane by adding plant available silica to the soil.
APPLICATION RATE
10%-15% of potting mix. Based on trails we made with hydroponics mediums, optimum results and higher dry weight are achieved by the following mix:
