K+S: potash fertilizers, PatentKALI and KALISOP
K+S potassium, magnesium and sulphur fertilizers, including PatentKALI, KALISOP and ESTA Kieserit, plus the KALI Academy knowledge platform.
K+S is a German minerals group supplying potassium, magnesium and sulphur fertilizers alongside industrial products.
Germany · Listed company K+S Aktiengesellschaft
K+S links mineral extraction with processing and the marketing of fertilizers. The listed company, K+S Aktiengesellschaft, is based in Germany and supplies potassium, magnesium and sulphur fertilizers alongside industrial products. Its agricultural portfolio covers soil-applied, fertigation and foliar products, and the company backs its range with advice and educational material on crop nutrition, so growers receive information on how and when to apply nutrients as well as the products themselves.
The products differ in chemical form, nutrient combination and intended application, which shapes how they are used on the farm. Potassium content on its own says little about whether one product can stand in for another. The full nutrient declaration, the application method and the conditions in the field together determine whether a fertilizer suits a particular crop. Some products deliver potassium as chloride, others as sulphate, and several combine it with magnesium and sulphur.
Size of the business
Sales of the K+S Agriculture customer segment were approximately EUR 2.548 billion in 2025. This covers the agricultural business, not total group revenue, which also includes the Industry+ segment.
Are all K+S potash fertilizers the same?
No. They differ in nutrient form, additional elements and intended use, and each product carries its own declaration.
Is KALI Academy a fertilizer?
No. KALI Academy is a knowledge platform providing agronomic information about plant nutrition.
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