Polysulphate®

The only 4-in-1 fertilizer to provide a natural, season-long source of sulfur, calcium, potassium, and magnesium in one balanced granule.

What is Polysulphate (polyhalite)?

Made by nature, mined by ICL. Polysulphate^® is a naturally occurring mineral fertilizer, polyhalite, mined exclusively by ICL. Available as a granule, sphere, or powder, it is soluble, plant-available, and easy to blend and spread, making it a cost-effective sulfur solution.

Deposited in the earth 260 million years ago, each Polysulphate granule naturally contains Sulfur, Potassium, Calcium and Magnesium – four of the six essential macro-nutrients required for optimal plant growth. Since 2010, hundreds of field trials have been conducted worldwide demonstrating Polysulphate’s efficacy in improving both crop yield and quality.

Why is Polsyulphate more effective than other forms of sulfur?

Polysulphate—a better source of Sulfur

As a naturally occurring sulfate-based multi-nutrient, polyhalite, Polysulphate requires no chemical separation or industrial processing, delivering high agronomic value for low environmental impact. Providing a season-long source of plant-available nutrients, Polysulphate’s gradual release pattern safely meets peak plant demand and improves nutrient use efficiency while reducing risks of leaching. It is proven to produce a healthier and more productive crop across a wide variety of soil types. Low-chloride, low salt index, neutral pH and no liming effect make it a safe choice even for sensitive crops.

Polysulphate is a natural product with a low carbon footprint, licensed for use in organic farming systems. Polysulphate sets the standard in environmental sustainability among fertilizers, with Polysulphate Standard, and Granular having the the lowest carbon footprint (compared to similar products) of just 0.034 kilograms of CO2 equivalent per kilogram of product. Polysulphate is suitable for organic farming systems and is approved for organic use by several certification agencies around the world, including Ecocert, Ceres, and OMRI.