Allied Nutrients XCU


Product Overview

XCU® slow-release fertilizer provides gradual, steady nutritional uptake for up to 10 weeks of plant response. XCU® fertilizer has the highest nitrogen (N) content (43%) and lowest sulfur content (4%) of any polymer-coated sulfur-coated urea (PCSCU) on the market. The value is more area can be covered per application using less fertilizer, which is more efficient and economical. Also, with less N lock-off more of the applied N is taken up and utilized by turfgrass or plants in the expected time frame.

Slow Release

advanced dual-coating Technology

Slow Release
  1. Less sulfur coating reduces N lock-off and delivers more N
  2. Coating integrity is maintained during transport, blending, bagging and application
  3. Outer layers consist of a thin coating of elemental sulfur and polymer wax, which work together to protect the inner polymer coating
  4. Inner layer consists of a thin, cross-linked polymer film that encapsulates and protects the urea granule
  • SGN options - mini and regular

How It Works

Slow Release

1. Soil moisture penetrates the sulfur and polymer coatings.

Slow Release

2. Nitrogen (N) begins to dissolve creating pressure within the granule.

Slow Release

3. With previous-technology SCUs, this pressure cracked the coating, immediately releasing N (catastrophic release). The inner polymer coating of XCU® fertilizer results in a hybrid of diffusion-based release and catastrophic release, resulting in a more consistent release profile.

Slow Release

4. After N release, the sulfur eventually breaks down into the soil where it may be taken up by the plant.

Product benefits

XCU® slow-release fertilizer has been widely used by superintendents, LCOs, municipal turf managers and professional landscapers to economically and efficiently promote a plant response of health, growth and color for up to 10 weeks per application.

  • Unique, durable coating provides gradual, consistent N release when needed to optimize nutrient uptake by the plant
  • Increased percentage of XCU® fertilizer in blends delivers increased value and improved nutrient uptake
  • Dual-coated technology provides up to 10 weeks of plant response
  • Fewer applications can reduce overall fertilizer expense, fuel costs and equipment upkeep; allows optimization of labor
  • Highly flowable for ease of handling and consistent application
  • Environmentally responsible with low potential for nutrient leaching, denitrification, runoff or volatilization

Options and flexibility

XCU® fertilizer is available in sizes to fit a number of fertilization programs.


Only a portion of the N applied as conventional fertilizer is taken up by plants, but enhanced efficiency fertilizers (EEFs) increase N uptake. Increasing the XCU® fertilizer content in blends results in more efficient N use; the more XCU® fertilizer used, the better your blends work.

*Above data from University of Florida and Pennsylvania State University. The underlying data in university studies was provided under a Research trial Financial Support Agreement with the universities. The universities mentioned do not endorse or recommend any product or service.

Beating the Rush

“When XCU® became an option, I felt it solved a lot of problems, because it gives me more consistent release.”

Chad Haney, The Yard Works

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