POLYMER COATED SULFUR COATED UREA (PCSCU) TriKote coated fertilizers are comprised of a soluble urea fertilizer core surrounded by a thin, composite coating about the thickness of a human hair. The primary constituent of this coating is a layer of elemental sulfur. Sealing and protecting the Sulfur-coating is a tough, ultra-thin, external polymer coating. This polymer coating, unique to TriKote coated fertilizers, provides protection to the inner coating and controls the initial diffusion of soil moisture into the encapsulated nutrient granule.

By utilizing the same-patented Reactive-Layer Coating (RLC™) process used to manufacture POLYON as an outer coating on TriKote, Agrium Advanced
Technologies has created a PCSCU that is truly unique. As a result TriKote coated products are tougher, more dependable and consistently deliver more pounds of N per ton than any other SCU/Polymer Coated Sulfur Coated Urea (PCSCU) on the market today. Our customers benefit from TriKote's tough outer coating because it is less likely to
be damaged during the blending or application process. They also benefit from TriKote's unique manufacturing process, which allows up to 50% less Sulfur than competitive products, dramatically reducing "lock-off". Having more polymer and less Sulfur also allows TriKote coated products to deliver more pounds of Nitrogen, which means more fertilizer for your dollar.


TriKote Regular and Mini sized products are perfect for use on professional turf or landscape plantings. Either way, your plants receive all the Nitrogen needed for months of uninterrupted feeding without the unpredictable release characteristics common with many SCUs/PCSCUs.

Nitrogen Comparison Chart


AAT puts its reputation on the line every day! As a result, each batch of TriKote is put through a series of quality control tests to insure that each bag releases the exact same way, every time. No other SCU/PCSCU fertilizer offers the proven durability and reliability of TriKote coated fertilizers.

The immediately released nitrogen is determined by a two-hour water leaching test conducted at 70 degrees to 75 degrees per AOAC 970.04 test method, commonly referred to as the "Katz Test" approved by the Association of American Plant Food Control Officials (AAPFCO) and used by state regulatory officials to verify product label claims. The label guarantees for coated slow release nitrogen, CSR-N, is the percentage of unreleased (N), which is verified by this test method.

An extended water immersion dissolution rate test (which is more severe than the Katz Test) is conducted for seven days at elevated temperature of 86 degree F. The nitrogen remaining (unreleased) after this test, typically is about 40-70 percent of the total (N), and would be reported as having a seven-day DR of about 30-60 percent (released). Typically, regular-sized granules will be at the low-end DR range and mini-sized granules will be in the middle of the DR range.