SUL4R-PLUS® Fertilizer Boosts Crop Growth

Apr 09, 2026
By Farms.com

Reliable US produced fertilizer delivers calcium sulfur and better yields

As the 2026 planting season approaches, growers are focused on improving nutrient efficiency, protecting input investments, and securing reliable crop nutrition. SUL4R-PLUS® is a calcium sulfate fertilizer designed to meet these priorities with proven agronomic performance and fully U.S.-sourced production.

Backed by a domestic supply chain and expanded production capacity, including a facility in Marissa, Illinois, SUL4R-PLUS® ensures consistent availability while minimizing the risk of supply disruptions. This reliability allows growers to plan their fertility programs confidently.

SUL4R-PLUS® delivers two essential secondary nutrients: calcium and sulfur. These nutrients play a key role in plant health, nutrient uptake, and nitrogen efficiency.

Sulfur is crucial for protein formation, chlorophyll production, and nitrogen use, while calcium strengthens cell walls, supports nutrient transport, and improves stress tolerance. Each pellet also contains fulvic acid to enhance root development and nutrient absorption throughout the growing season.

Field trials and real-world grower experience show measurable yield improvements across crops. Illinois grower Gerald Forbeck reports that using SUL4R-PLUS® in wheat, corn, and soybeans led to yield increases of 8–14%, with higher protein, calcium, and sulfur levels in crops like alfalfa.

“We have a 100% U.S. production and supply chain for this crop nutrition tool,” said Ben Runge, Plant Advantage™ Marketing Manager, HELM Crop Solutions. “It’s one thing to manufacture a product in the U.S., but sourcing the raw materials here as well minimizes disruption risk and gives growers confidence that the product will be there when they need it.”

Designed for operational efficiency, the low-dust, uniform pellets allow accurate application, flexible timing, and improved storage. The fertilizer is pH-neutral with a low salt index, reducing the risk of crop injury while supporting long-term soil health.

“In 2024, we saw about an 8% yield increase in both wheat and corn, and more than a 14% increase in soybeans compared to no sulfur,” said Illinois grower and retired retailer Gerald Forbeck. “The fertilizer is a high-quality material that provides necessary nutrients and a root stimulator, without affecting soil pH.”

With global fertilizer markets volatile, SUL4R-PLUS® provides a stable, scalable solution for growers seeking higher nutrient efficiency, improved yields, and strong ROI. It is most effective when integrated into a comprehensive fertility plan, offering dependable results across varying crops and conditions.

Photo Credit: Sul4rplus-Soybean-rows

Video: Dicamba Returns for Georgia Farmers: What the New EPA Ruling Means for Cotton Growers

After being unavailable in 2024 due to registration issues, dicamba products are returning for Georgia farmers this growing season — but under strict new conditions.

In this report from Tifton, Extension Weed Specialist Stanley Culpepper explains the updated EPA ruling, including new application limits, mandatory training requirements, and the need for a restricted use pesticide license. Among the key changes: a cap of two ½-pound applications per year and the required use of an approved volatility reduction agent with every application.

For Georgia cotton producers, the ruling is significant. According to Taylor Sills with the Georgia Cotton Commission, the vast majority of cotton planted in the state carries the dicamba-tolerant trait — meaning farmers had been paying for technology they couldn’t use.

While environmental groups have expressed concerns over spray drift, Georgia growers have reduced off-target pesticide movement by more than 91% over the past decade. Still, this two-year registration period will come with increased scrutiny, making stewardship and compliance more important than ever.