Dr. AJ Foster

North America Agronomy Lead / PhD, CPAg, CCA|ICL Growing Solutions

2026 Abstract - BEYOND FERTILIZER: THE ROLE OF POLYSULPHATE® IN BALANCING AGRONOMY, ECONOMICS AND SOIL HEALTH: Polysulphate® is a natural, multi-nutrient fertilizer delivering sulfur (S), potassium (K), calcium (Ca), and magnesium (Mg) in one granular product. Research in southern U.S. cropping systems—rice, soybean, and cotton—shows that meeting sulfur needs with Polysulphate can reduce Muriate of Potash (MOP) and seeding rates without sacrificing yield. Beyond nutrient supply, Polysulphate enhances soil health by improving nutrient efficiency, crop establishment, and ecosystem resilience. These benefits make it a practical solution for boosting agronomic performance, profitability, and long-term soil sustainability.