Polysulphate® is a naturally occurring mineral fertilizer that delivers a balanced supply of sulfur, potassium, magnesium, and calcium — all in one environmentally sustainable, seed-safe product. Mined from deep underground along the North Sea coast, Polysulphate supports healthier soils, stronger roots, and more resilient crops by synchronizing sulfur release with plant nutrient demand over the season. When you need a smarter, season-long sulfur source with full secondary nutrient support, Polysulphate provides the foundation for your fertility program.
What Makes Polysulphate Different
100% Natural Mineral (Polyhalite) (No chemical processing. Just crushed, screened, and bagged — no chemical processing), Multi-Nutrient Efficiency (Supplies four critical nutrients together — Sulfur, Potassium, Magnesium, and Calcium — reducing blending complexity and improving nutrient balance), Season-Long Sulfate Supply (Releases sulfate sulfur steadily over 50–90 days, minimizing early season loss and matching crop demand), Low Salt Index (Seed-safe even under dry conditions, minimizing emergence risks compared to traditional sulfates), Sustainability (Extremely low carbon footprint compared to ammonium sulfate, with improved soil biology compatibility).
Guaranteed Nutrient Analysis:
Key Features and Benefits
Season-long sulfur supply enhances nitrogen use efficiency and protein formation, Potassium for water regulation, root pressure, and stress resilience, Magnesium for photosynthesis and energy conversion, Calcium for stronger roots, cell walls, and drought resilience, Ideal for canola, cereals, pulses, potatoes, and corn.
Trial-Proven Agronomic Performance
Multiple years of independent and third-party research have proven that Polysulphate: Increases yield potential compared to AMS and gypsum, Improves grain quality (higher protein and oil content), Supports better stand counts, root biomass, and early vigor, Reduces soil salinity risks compared to high-salt ammonium sulfate programs.
View ICL’s extensive Canadian trial database for Polysulphate here:
Application Guidelines
Placement: Broadcast, banded, or in-furrow depending on equipment setup. Blending: Fully compatible with TSN, urea, MAP, CG P2X, potash, and other granular fertilizers. Typical Rates: 75 to 150 lbs/acre depending on crop, sulfur removal rates, and soil test results. Work with your agronomist for a customized fertility plan based on local field conditions and ROI objectives.
