Top 10 Companies in the Potassium Magnesium Sulfate Fertilizer Industry (2025): Market Leaders Nourishing Global Agriculture

In Business Insights
July 06, 2025

The Global Potassium Magnesium Sulfate Fertilizer Market was valued at USD 890 million in 2024 and is projected to reach USD 1.26 billion by 2032, growing at a Compound Annual Growth Rate (CAGR) of 4.8% during the forecast period (2024–2032). This growth is driven by increasing demand for high-efficiency specialty fertilizers, expanding precision agriculture practices, and the need for balanced nutrient solutions in cash crops and horticulture.

As global food security challenges intensify, potassium magnesium sulfate fertilizers play a critical role in improving crop quality and yield. This blog profiles the Top 10 Companies in the Potassium Magnesium Sulfate Fertilizer Industry—established mineral producers and innovative agri-solutions providers who are shaping modern farming practices.


🔟 1. The Mosaic Company

Headquarters: Tampa, Florida, USA
Key Offering: K-Mag® brand potassium-magnesium sulfate

Mosaic is the world’s largest producer of potassium magnesium sulfate fertilizers, with its flagship K-Mag® product serving professional growers across 40+ countries. Their specialty fertilizer division focuses on high-value crops requiring magnesium and sulfur supplementation.

Innovation Focus:

  • Proprietary ore processing technologies
  • Sustainable mining practices
  • Customized blends for regional soil conditions

Download FREE Sample Report: Potassium Magnesium Sulfate Fertilizer Market – View in Detailed Research Report


9️⃣ 2. Israel Chemicals Ltd (ICL)

Headquarters: Tel Aviv, Israel
Key Offering: Polysulphate® and Magnisal® fertilizers

ICL’s specialty plant nutrition division produces innovative potassium magnesium sulfate formulations from unique mineral resources. Their products are particularly valuable for chloride-sensitive crops and premium agricultural markets.

Sustainability Initiatives:

  • Low-carbon footprint production processes
  • Controlled-release technology development

8️⃣ 3. K+S Group

Kassel, Germany
Key Offering: ESTA® Kieserite magnesium fertilizers

The German mineral giant offers high-purity magnesium sulfate products complemented by potassium sulfate fertilizers. K+S serves both agricultural and industrial markets through its extensive European distribution network.

Market Strength:

  • Vertically integrated production
  • Technical agronomy support services

7️⃣ 4. SDIC Xinjiang Luobupo Potash

Headquarters: Korla, China
Key Offering: Potassium magnesium sulfate for Asian markets

As China’s leading producer of sulfate-based potash fertilizers, SDIC plays a vital role in supplying affordable, high-quality potassium magnesium sulfate to regional farming operations. The company operates one of Asia’s largest potassium sulfate production facilities.

Regional Impact:

  • Strategic government-backing
  • Cost-competitive production

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