Top Suppliers and Manufacturers of Sulfate of Potash (SOP) in the United States 🇺🇸

Intrepid Potash is a prominent U.S.-based producer specializing in potash and sulfate of potash (SOP) fertilizers. Established in 2000 and headquartered in Denver, Colorado, Intrepid Potash stands out as the largest domestic producer of potassium chloride, commonly known as muriate of potash (MOP), and sulfate of potash magnesia. These essential minerals are critical for agricultural success, boosting soil health and crop yields, particularly in the growing organic farming sector.

Intrepid operates three strategically located mines in the western United States—near Carlsbad, New Mexico; Moab, Utah; and Wendover, Utah. These locations allow the company to tap into significant potash reserves. The Carlsbad facility processes sylvite and langbeinite, contributing to a diverse range of fertilizer applications. The Moab mine employs a combination of solution mining and solar evaporation, and boasts up to 2.0 billion tons of potash reserves in the Paradox Basin. The historic Wendover mine has been operational since 1917, initially extracting potash during World War I. It now utilizes a network of canals and evaporation ponds for efficient potash production.

Intrepid's flagship product, Trio®, is a specialty fertilizer that effectively combines potassium, magnesium, and sulfate, ensuring optimal soil health and crop production. The company supplies high-quality potash for both domestic and international markets, aiding not only agriculture but also industrial applications and animal feed.

Intrepid Potash prides itself on its sustainable mining practices, which include pioneering the world's first horizontal potash caverns at their Moab facility. With approximately 500 employees, the company remains committed to innovation and maintaining the trust of its clients through timely and cost-effective deliveries.

Compass Minerals is a leading supplier of essential minerals, specializing in the production and distribution of high-quality salt, sulfate of potash, and magnesium chloride. Notably, their sulfate of potash serves as a premium fertilizer, making a significant impact in the agricultural sector by improving crop yields and soil quality.

Based in Overland Park, Kansas, Compass Minerals has a deep-rooted history, having been established in 1844. Over the years, the company has grown to become a major player in the minerals industry, known for its commitment to quality and sustainability. They operate extensive underground salt mines, including the Goderich Mine in Ontario, the largest salt mine in the world, and significant facilities in the United States and the United Kingdom.

Compass Minerals' top products include rock salt for de-icing, American Stockman® for agriculture, and a variety of industrial salts. Their product portfolio also extends to innovative solutions like next-gen fire retardants such as Fortress®, and sustainable storage options like U.K. DeepStore®. These offerings serve a myriad of industries from food processing and water conditioning to road safety and agriculture.

The company has a significant presence in North America and the United Kingdom, but their export markets span over 40 countries globally, reinforcing their status as a key player in the mineral supply chain. As of 2021, Compass Minerals reported revenues of $1.49 billion, supported by a dedicated workforce of approximately 3,131 employees.

Through strategic operations and a focus on innovation, Compass Minerals continues to uphold its mission of supplying high-quality minerals while emphasizing environmental responsibility. Their advanced extraction technologies and sustainable practices ensure they remain at the forefront of the industry, meeting the evolving needs of their extensive customer base across multiple sectors.

Midwestern BioAg, established in 1983, is a prominent supplier in the agricultural sector, renowned for its innovative and sustainable farming solutions. Based in Blue Mounds, Wisconsin, the company offers a wide array of products, including dry fertilizers, liquid products, soil amendments, and livestock nutrition aids. Among their flagship products are TerraNu Fertilizers and BIO-GEL, which are designed to enhance nutrient uptake and promote soil health.

Specializing in biological farming practices, Midwestern BioAg focuses on regenerative farming techniques that aim to improve soil productivity and reduce dependence on conventional fertilizers. Their product portfolio includes specialty crop programs like the Berry Program and Orchard Program, catering to the specific needs of various crops. The use of balanced fertilizer blends that incorporate vital nutrients such as calcium, sulfur, boron, magnesium, and manganese sets them apart in the market.

The company's commitment to sustainable agriculture has earned them significant traction in export markets, as they tap into the growing demand for organic farming practices across North America. With multiple facilities in states including Wisconsin, Minnesota, Iowa, Illinois, Ohio, and Michigan, Midwestern BioAg ensures a robust distribution network that extends its reach to diverse agricultural markets.

One of their hallmark products is TerraNu, a retail fertilizer containing standardized nutrients produced through an innovative process that transforms animal waste into a soil-enhancing organic fertilizer. This circular approach not only boosts crop yields but also supports environmental sustainability by reducing nitrogen and phosphorus applications, thereby contributing to cleaner water systems.

The Mosaic Company is a prominent player in the agricultural and industrial sectors, specializing in the production of crucial nutrients for crop growth. Headquartered in Tampa, Florida, Mosaic operates extensively across North and South America and serves key global markets, including the United States, South America, and the Asia-Pacific region. The company's top-tier products include phosphate and potash fertilizers, particularly noted for enhancing global food security by providing essential nutrients that maximize crop yields. Among its notable products are MicroEssentials®, Aspire®, K-Mag®, and Pegasus®.

Founded in 2004, The Mosaic Company emerged from the merger of IMC Global and Cargill's crop nutrition division, effectively becoming the largest U.S. producer of potash and phosphate fertilizers. The company has since grown through strategic acquisitions and continuous innovations in crop nourishment and nutrient management. Its widespread distribution network ensures effective exporting capabilities, supported by its membership in Canpotex, a Canadian potash export association.

Mosaic is dedicated to sustainability and community investment, emphasizing practices that not only boost agricultural productivity but also contribute positively to environmental and local community welfare. With a commitment to innovative solutions, Mosaic remains a reliable partner for farmers, helping them navigate modern agricultural challenges. The company employs over 14,000 people and continues to expand its reach through additional operations in Brazil and other strategic locations.

While Mosaic's focus is predominantly on phosphate and potash, it is actively involved in the overall enhancement of crop nutrition, which may encompass products related to Sulfate of Potash (SOP). Such contributions are vital for specialized crop growing environments, where SOP is often preferred due to its lower salt index and suitability for chloride-sensitive crops.

Tessenderlo Kerley International is a distinguished supplier in the agricultural sector specializing in sustainable crop nutrition solutions. As part of the Tessenderlo Group, Tessenderlo Kerley leverages over a century of combined experience from Tessenderlo and more than 70 years from Kerley to offer an extensive portfolio of high-quality fertilizers.

The company is renowned for its Sulfate of Potash (SOP) products, including SoluPotasse® and K-Leaf®, which are essential for optimizing plant nutrition and enhancing crop yields while maintaining soil health. Other notable products include Thio-Sul®, KTS®, and CaTs®, which provide crucial nutrients to support efficient and sustainable agriculture.

Committed to innovation and research, Tessenderlo Kerley International continuously invests in product development to address modern farming challenges. The company’s expertise extends to liquid, solid, and soluble fertilizers designed to enhance crop vitality and environmental sustainability.

Tessenderlo Kerley operates globally, making a significant presence in regions such as South Africa, Morocco, India, and beyond. Their dedicated teams of agronomists and commercial advisors engage with local agricultural communities through training sessions and demonstrations to ensure that farmers receive tailored solutions for their crop needs.

Founded in 1919 and now part of the larger Tessenderlo Group headquartered in Belgium, Tessenderlo Kerley International stands as a leader in the agriculture, mining, and industrial sectors. This focus on sustainability and innovation makes them a prominent player in the industry.

With operations in over 100 countries and a workforce of 7,500 employees, the Tessenderlo Group reported consolidated revenues of €2.9 billion in 2023, underscoring its vast reach and impact on global agriculture.