The natural, multi-nutrient mineral fertilizer Polysulphate is the foundation of our Polyhalite-based fertilizers. We produce Polysulphate from polyhalite, the 4-in-1 mineral containing sulfur, potassium, magnesium, and calcium. Polysulphate is mined, crushed, and screened ready for use, giving Polysulphate its naturally low carbon footprint.
Polysulphate for Crops
Polysulphate has a natural prolonged nutrient release and is approved for organic agriculture. Its low pH, low salt index, and very low chloride content make Polysulphate a highly versatile, crop and soil-safe mineral fertilizer.
Polysulphate can also be combined with other nutrients to create fertilizers capable of providing even more nutrients in a single, extended-availability granule.
Polysulphate’s Unique Production
Polysulphate is a mineral fertilizer created from the natural multi-nutrient mineral, polyhalite. We mine polyhalite ICL Boulby, our mine in North Yorkshire, UK. ICL Boulby is the world’s only polyhalite mine, 1,200m under the North Sea. The raw polyhalite is transported to the surface, where it is crushed and screened, ready for sale to growers.
The Polysulphate Range of Fertilizers
Polysulphate is available in different grades: fine powdered Polysulphate Standard; small granules in Polysulphate Mini; and regular granules as Polysulphate Granular. In addition, we use Polysulphate in our Polysulphate-based fertilizers, for example, our Polysulphate Premium, ICL PKPlus, ICL PotashpluS, and more. Explore our Polysulphate based fertilizers to discover how they will help your crops achieve their potential.
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The potash fertilizer with Polysulphate that combines high performance and optimum cost-effectiveness
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NPKpluS® is a premium granulated fertilizer packing six nutrients in one. A single application delivers nitrogen, phosphorus, sulfur, potassium, magnesium, and calcium to your crops. The fully soluble nutrients are released gently over an extended period of time, reducing the risk of leaching and overdosing. Enriched with Polysulphate®, this versatile product is suitable for all kinds of crops and soil types, providing the most complete and efficient fertilization for the most demanding crops. Apply directly or bulk-blend with nitrogen fertilizers – the choice is yours.
ICL PKpluS Balanced P and K is for soils low in potassium and phosphorus and delivers a balanced and efficient nutrient supply.
ICL PKpluS High K is designed for low-potassium soils and boosts the quality of your crops.
ICL PKpluS High P is for soils with low levels of phosphorus and is ideal for plant establishment.
ICL PotashpluS™ is a granular fertilizer made with Polysulphate and potassium chloride. It provides crops with vital potassium, sulfur, magnesium, and calcium in a single application. ICL PotashpluS provides 37% potassium oxide, consisting of 30% potassium chloride and 7% as potassium sulfate. The sulfur, magnesium, and calcium in PotashpluS are all in 100% sulfate (SO4) form. With ICL PotashpluS, there is no need to choose between chloride or sulfate forms of potassium fertilizer: 20% of the potassium is in sulfate form, which reduces the chloride input by 50% compared with KCl.
Megapoly is a highly effective potash fertilizer, rich in potassium, calcium, magnesium, and sulfur. The powerful combination of quick-release and prolonged-release nutrients to meet your crops’ needs.
Granular: Polysulphate® granules for direct application with spreaders and bulk blending.
Mini: The granules are 1-2mm in size, which helps the practical application of Polysulphate®, especially in greenhouses and horticultural settings. It’s easy to apply directly via manual or mechanical spreading, while you can mix it with other fertilizers of a similar size.
Premium: Polysulphate® Premium consists of uniform, robust spheres of Polysulphate®, whose smooth surfaces protects it from abrasion, humidity, and damage. Its spherical shape ensures a steady flow rate and a consistently broad spread during application. It blends with other granulated fertilizer materials.
Standard: Polysulphate® fine grade has NPK granulation and is designed for direct manual application.
Maximum effectiveness, versatility, and efficiency – you can have it all with Sofipoly. This crop nutrition solution containing Polysulphate® is also packed with potassium, calcium, magnesium, sulfur, and trace amounts of boron. As a natural polyhalite fertilizer, Sofipoly is suitable for a wide range of crops and soil types, so you get the versatility you need within your overall crop nutrition plan. The multi-nutrient synergy combined with the quick and prolonged release enhances crop photosynthesis, which is sure to give you excellent crop yield and quality. The product extends the shelf-life of fruits and vegetables, while also improving their look and taste. Sofipoly is highly stable, so it can be mixed with organic, compound, or other fertilizers. It’s ideal for chloride-sensitive crops with lower salinity than the alternatives, meaning less risk of soil salinization. What’s more, it boosts drought tolerance and disease resistance, reducing the risk of lodging too.
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