Welcome to Imerys Performance Minerals

Soil Amendment

Soil Amendment Imerys minerals provide mineral nutrients to soil to enhance the growth of plants

Bioavailable Silicon

Imerys diatomaceous earth and wollastonite provide bioavailable silicon to plants.

Silicon is the second most abundant element in the earth's crust, however, not all forms can be utilized by plants. Imerys has tested different mineral sources from our mineral portfolio and identified optimal solutions that can provide bioavailable silicon addressing uptake mechanisms, both inside and outside of the plant.

Silicon has not been recognized as an essential element as most plants will grow normally without it,  however, the beneficial effects of plant available silicon has been observed in a wide variety of plant species.

Genes in the plants’ roots facilitate active silicon uptake. The bioavailable silicon is then translocated from the roots to the leaves where SiO2 is incorporated into the leaf tissue as phytoliths. Phytoliths are rigid, microscopic structures made of silica that provide a structural and protective role against fungi, insects, and herbivores.

Key benefits provided by plant available silicon:

  • Healthier plants
  • Reduced disease pressure
  • Improve stress resistance (biotic and abiotic)
  • Longer shelf life
  • Better yield
  • OMRI listed

Our plant available silicon products can be applied as a foliar spray and directly to soil using ground equipment or irrigation systems, and can be incorporated into most spray tank mixes. Graphs 1, 2 and 3 show the impact of Imerfert DSi or Imerfert WSi has on the yield and shelf life of olives, strawberries, and kiwi fruit.

Plant Available Silicon (PAS) - Before and After

Graph 1

Impact of Imerfert DSi on yield of Chalkidiki olives cultivated on 7acres of open field. 2 x 20Kg Imerfert DSi applied by spray application

Graph 2

Impact of Imerfert WSi on yield, decay and shelf life of Fortuna strawberries cultivated in a greenhouse. Trail size 1 hectare, 4 x 20Kg Imerfert WSi applied by drip irrigation.

Graph 3

Impact of Imerfert WSi on yield, firmness and shelf life of Tschelidis Kiwi fruit culitiaded on 1 hectare of open field 1x20KgImerfert WSi applied by drip irrigation.

Recommended grades:

  • Imerfert DSi*
  • Imerfert WSi*


* DE and Wollastonite are registered in multiple USA states. 

Imerys U.S. dolomitic lime provides pH control and secondary macronutrients, calcium, and magnesium to plants.

Calcium and magnesium are secondary macronutrients for plants. In the absence of these mineral elements, plants will not grow to their full potential. 

Soil that is deficient in magnesium leads to a reduction in yield and has a higher susceptibility to plant disease. Phosphorus is an essential macronutrient that enhances the growth of plants and impacts the development of roots, flowers, seeds and fruit. Phosphorus readily binds with calcium to form calcium phosphate, however, calcium phosphate is insoluble in water and does not get absorbed by plants. Calcium binds the phosphorus, but magnesium phosphate is readily absorbed by plants.

Below is a heat map of magnesium soil content in the USA. Most soils low in magnesium are often acidic and low in calcium, i.e. magnesium deficiency is closely correlated to acidic soil distribution.


Heat Map of Magnesium Soil Content

Reference: https://mrdata.usgs.gov/geochem/doc/icp40.htm State & county level magnesium %: https://mrdata.usgs.gov/geochem/doc/averages/mg/usa.html

The ideal pH range for most crops is 6.5 - 7. In that range there is a maximum availability of nutrients for crop growth. In addition, this pH range reduces the solubility of potentially toxic elements like manganese, aluminum and iron. 

The activity of soil microbes is optimized in the 6.5 - 7 pH range, facilitating the release of more nitrogen, phosphorus, boron and sulfur.

Key benefits provided by dolomitic lime: 

  • Optimizes soil pH 
  • Adds calcium and magnesium to the soil
  • Pelletized lime is low dusting and non burning
  • Dissolves quickly
  • Easily applies using any spreader 
  • Encourages healthier plants and produces thicker & greener lawns 
  • OMRI listed
  • Registered in multiple USA states*


*please contact us for more details

Recommended grades:

  • Lime Rite (consumer brand)
  • Pro Lime (professional brand)

We offer a full range of custom formulation and technical and process support services to help you match the right mineral grade to your application requirement.

Please contact us, we will be only too happy to help

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