17% Sulfur 21% Calcium
Sulfur is critical to crop performance — but it’s one of the easiest nutrients to lose from the soil. Leaching, rapid mineralization, and high plant demand can quickly strip sulfur from fields, leaving crops short when they need it most. SUL4R-PLUS solves this problem with a controlled-release granular sulfate fertilizer that provides immediate and season-long sulfur and calcium availability — matching crop uptake curves more closely than any traditional sulfate source. Built with seed safety, soil health, and agronomic efficiency in mind, SUL4R-PLUS changes the way modern fertility programs deliver secondary nutrients.
What Makes SUL4R-PLUS Different
Controlled Release Sulfate (Releases 2–5 pounds of sulfate every 10 days over 60–80 days, ensuring consistent nutrition through early, mid, and late crop stages), High-Purity Synthetic Calcium Sulfate (Produced through a patented process from purified flue gas desulfurization gypsum — clean, consistent, and environmentally sound), Low Salt Index (5) (Seed safe even under dry or stressed conditions — far safer than traditional ammonium sulfate (AMS)), Soil Amendment Properties (Improves soil structure, reduces compaction, enhances water infiltration, and balances excess magnesium or sodium in sodic soils), Dust-Free, Uniform Granules (250–280 SGN size, superior crush strength, great handling and storage characteristics).
Key Features and Benefits
Immediate and season-long sulfur and calcium feeding, Uniform spreadability (20–30 granules per square foot at 100 lbs/ac), Reduced salt stress at seeding compared to AMS or other sulfates, Supports healthier root systems and stronger crop architecture, Ideal for all crops including canola, cereals, pulses, potatoes, and corn, Contributes to healthier soil microbial activity with ammonium lignosulfonate and fulvic acid binders.
Guaranteed Nutrient Analysis:
| Calcium (Ca) | 21% |
| Sulfur (S) | 17% |
| pH | 7–8 |
| Granular Range (1SD)(SGN) | 250–280 |
| Crush Strength | 8 lbs |
| Uniformity Index (UI) | >50 |
| Bulk Density | 58–60 lbs/cubic foot |
Application Guidelines
Recommended Rates: 100 lbs/acre = 21 lbs of calcium + 17 lbs of sulfur per acre. Adjust based on crop needs, soil tests, and yield targets. Placement: Broadcast, air drill, or planter-applied. Compatible with most granular starter and topdress blends. Always consult with an agronomist for a customized fertility program.
Low Dust Formulation
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