The Proven Foundation for Stronger, Healthier Crops.
SUL4R-PLUS® delivers the power of calcium and sulfur in one premium, controlled-release granule, fueling stronger plants and higher yields from start to finish. Engineered for uniformity and ease of use, it strengthens crops, supports soil health, and drives consistent yield performance across all conditions.
- Consistent Granule Quality
- Improved Soil + Plant Health
- Superior Handling + BLendability
- Sustainable Performance
Secondary nutrients support critical metabolic and biochemical processes a crop requires to maximize yield potential.
SUL4R-PLUS combines calcium and sulfur in a high-quality, fulvic-acid-bound granule for immediate and sustained nutrient availability. This proprietary formulation enhances soil structure, boosts nutrient cycling and provides crops with essential secondary nutrients throughout the growing season.
SULFUR
- SUL4R-PLUS has a nutritional value of 17% Sulfur.
- Essential building block for chlorophyll development, protein synthesis and plant metabolism..
- Required by rhizobia bacteria for nitrogen fixation in legume crops.
- Mandatory for plant utilization of nitrate.
- Critical for building nutrient-producing amino acids like cysteine and methionine that boost protein production.
- Essential for producing oils in crops like soybeans and canola.
- Improves flavor, color and yield quality in fruits and vegetables.
CALCIUM
- SUL4R-PLUS has a nutritional value of 21% Calcium.
- Provides structural cell wall support that leads to stronger leaf and stem structures.
- Enhances resistance to environmental stresses like drought, temperature extremes and pests.
- Supports efficient nutrient uptake and transport.
- Required for nodule formation and supports nodule health in legumes.
More for your Crops. More for Your Business. SUL4R-Plus helps you win.
Superior Agronomic Performance
- Water soluble, plant-available calcium and sulfur source for immediate plant uptake.
- Continuous nutrient release for at least 4x longer than ammonium sulfate.
- Immediate calcium and sulfur availability improve a crop’s early season stress tolerance.
- Enhances soil microbial activity for more efficient nutrient cycling.
- Low-salt index <8 and pH neutral to protect seed, soil and plant health.
- Binder enhances soil microbial activity for more efficient nutrient cycling.
- Manufactured with the highest quality production standards for reliable performance.
- Increases the uptake efficiency of other nutrients, including N-P-K.
Convenient Application Efficiency
- Replaces multiple micronutrient SKUs with one complete, balanced solution.
- Simplifies blending and storage while reducing handling risks and exposure.
- Easy-to-apply, low-dust granules improve efficiency in the field and during application.
Sensible Economic Benefits
- Delivers exceptional agronomic performance and the best ROI of any sulfur-based product on the market.
- Provides consistent pricing stability compared to blended or coated alternatives.
- Adds measurable value over commodity fertilizers through improved nutrient efficiency and yield gains.
Crop potential, unlocked for every acre.
SUL4R-PLUS is a great product. It works well, it’s not one of those flashy new type products where you’re trying to grasp something that isn’t there. What SUL4R-PLUS says it is, it is, and it does what its supposed to do.
—ANDY SCHAFSTALL, PREMIER AG
For pound-per-pound availability throughout the season, SUL4R-PLUS is definitely the go-to product as far as cost effectiveness in poundage of sulfur. Tremendous return on investment.
—CHRIS JONES, JONES FARMS
I like that SUL4R-PLUS is a calcium sulfate so it doesn’t effect your pH as much as AMS does. SUL4R-PLUS is also consistent — the spread pattern is good and it blends well.
—CHAD SIMPSON, SIMPSON FARMS
See the distinct advantages SUL4R-PLUS has over ammonium sulfate and elemental sulfur alternatives.
| PRODUCT CHARACTERISTICS | SOIL-STABLE | PLANT-AVAILABLE | LEACHING POTENTIAL | |
| SUL4R-PLUS | High-quality granules, consistent size, blends easily with micros, fulvic acid binder, highly soluble |  | | LOW |
| Ammonium Sulfate (AMS) | No consistent pellet size, high salt content, reduces soil pH | No | | HIGH |
| ATS | High salt content, reduces soil pH | No | | HIGH |
| Gypsum | Inconsistent pellet size and rigorous manufacturing process, product absorbs water in humid conditions | No | | MODERATE |
| Elemental Sulfur | Oxidation to sulfate highly dependent on particle size, combustibility risks, dusty to mix and apply | | No | LOW |
From product information to application insights, explore the resources designed to help you maximize performance and efficiency with SUL4R-PLUS. Download materials any time for easy access in the field or office.
Salt Index and Fertilizer Burn Fact Sheet
Gain a deeper understanding of salt index, how it can impact plant cells and the benefits of a low salt index fertilizer like SUL4R-PLUS.
Comparison charts
Get a side-by-side view of how SUL4R-PLUS stacks up against AMS.
Granular Analysis
Take a look at SUL4R-PLUS at the granular level. Get a quick, by-the-numbers breakdown of everything from calcium and sulfur to crush strength and bulk density.
Our team has been hand-selected because they’re experts in their field with a deep passion for what they do.
Please reach out with questions regarding technical product details, safety information, purchase inquiries or any other questions you may have.