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CENTURO™ Nitrogen Stabilizers

CENTURO™ A-PRO and CENTURO U-PRO nitrogen stabilizers feature the patented active ingredient Pronitridine, delivering highly effective below-ground protection against nitrogen loss from leaching and denitrification. Both CENTURO A-PRO and CENTURO U-PRO offer highly concentrated formulations that help improve operational efficiency through lower use rates. Both formulations are noncorrosive to the metals used in fertilizer equipment, making them easy to handle, gentle on equipment, and designed to help reduce downtime associated with equipment damage. CENTURO A-PRO is designed for anhydrous ammonia and UAN applications, while CENTURO U-PRO is designed for dry fertilizers containing ammoniacal nitrogen, including granular urea.

Features & Benefits

Proven Efficiency. Unrivaled Protection.

Developed by Koch Agronomic Services, CENTURO nitrogen stabilizer was the first nitrification inhibitor to be registered by the Environmental Protection Agency (EPA) in 40 years. Today, CENTURO A-PRO and CENTURO U-PRO are significantly more concentrated formulations, featuring 44% of the active ingredient Pronitridine – more than three times the original CENTURO formulation (14%). These below-ground nitrogen stabilizers were designed to help reduce nitrate leaching and denitrification. Whether you're applying in the fall or the spring, the CENTURO formulations provide growers with unparalleled protection, ensuring that crops have access to nitrogen when they need it most.

monitoringNoncorrosive FormulaBoth CENTURO formulations are 100% noncorrosive to the metals used in anhydrous ammonia and UAN equipment, making it easy-to-handle, gentle on equipment and helping reduce downtime associated with equipment damage. The noncorrosive formulations can be stored for up to two years without harming equipment or reducing effectiveness.

Noncorrosive FormulaBoth CENTURO formulations are 100% noncorrosive to the metals used in anhydrous ammonia and UAN equipment, making it easy-to-handle, gentle on equipment and helping reduce downtime associated with equipment damage. The noncorrosive formulations can be stored for up to two years without harming equipment or reducing effectiveness.

securityEase of UseWith the ability to be added before, during or after the addition of anhydrous ammonia and UAN, and through the use of a side-kick system, the CENTURO formulations deliver the flexibility you need to run your operation with maximum nitrogen efficiency.

Ease of UseWith the ability to be added before, during or after the addition of anhydrous ammonia and UAN, and through the use of a side-kick system, the CENTURO formulations deliver the flexibility you need to run your operation with maximum nitrogen efficiency.

monitoringNitrogen Use Efficiency (NUE)There's nothing complicated about this fact: In 2025, CENTURO A-PRO increased total plant available nitrogen in the soil profile by 97% at VT in corn at 180 lbs. N/ac compared to untreated fall applied anhydrous ammonia.The underlying data was provided by Cropsmith, Inc. and Illinois Fertilizer and Chemical Association under a Research Trial Financial Support Agreement with Koch Agronomic Services, LLC. Neither these institutions, nor the individual researchers referenced, endorse or recommend any product or service. Improvements in yield and nutrient use efficiency may not be observed in all cases.

Nitrogen Use Efficiency (NUE)There's nothing complicated about this fact: In 2025, CENTURO A-PRO increased total plant available nitrogen in the soil profile by 97% at VT in corn at 180 lbs. N/ac compared to untreated fall applied anhydrous ammonia.

ac_unitFlexible Storage OptionsCENTURO A-PRO and CENTURO U-PRO nitrogen stabilizers are designed to fit seamlessly into existing retail operations. Both formulations are noncorrosive and do not require stainless steel storage tanks, providing flexible storage options and allowing product to be stored for up to two years. With the higher concentration, retailers can store and handle less total product volume, helping maximize on site storage capacity and improve operational efficiency.

Flexible Storage OptionsCENTURO A-PRO and CENTURO U-PRO nitrogen stabilizers are designed to fit seamlessly into existing retail operations. Both formulations are noncorrosive and do not require stainless steel storage tanks, providing flexible storage options and allowing product to be stored for up to two years. With the higher concentration, retailers can store and handle less total product volume, helping maximize on site storage capacity and improve operational efficiency.

ac_unitHighly StableWith its subzero freeze point, CENTURO A-PRO and CENTURO U-PRO will not freeze and does not require cold weather protective equipment as long as temperatures remain above -9 degrees Fahrenheit.

Highly StableWith its subzero freeze point, CENTURO A-PRO and CENTURO U-PRO will not freeze and does not require cold weather protective equipment as long as temperatures remain above -9 degrees Fahrenheit.

Justin SpethFacilities Manager, Muscatine Ag

,,The noncorrosive formula* of CENTURO is key to us and to our member-owners. That is a big selling point to PCA and customers that have their own storage tank. I'm able to tell them: 'This isn't going to hurt your tank.' We trust CENTURO in our tanks, it isn't hard on your equipment and it protects your investment. That's why we recommend CENTURO.

Doug GraberAgronomy Division Manager, Producers Cooperative Association

Jamie VeselyAgronomist, CCA, Tama Benton Cooperative

Real Customers, Real Results

Discover the next-generation nitrogen stabilizer, CENTURO, through the experiences of growers and retailers. With its patented active ingredient Pronitridine, CENTURO is an effective nitrification inhibitor that offers unparalleled flexibility in an easy-to-handle solution.

Formulation

Higher Concentration, Lower Application Rates

Designed for use with anhydrous ammonia, UAN, and dry fertilizers containing ammoniacal nitrogen, including granular urea, CENTURO A-PRO and CENTURO U-PRO provide highly effective below-ground protection against nitrogen loss from denitrification and leaching. Both formulations contain the patented active ingredient Pronitridine and feature highly concentrated formulations, delivering more than three times the concentration of the original CENTURO.

CENTURO A-PRO

CENTURO A-PRO is the next-generation nitrification inhibitor used to delay nitrification in anhydrous ammonia and UAN. It is a higher‑concentration formulation, delivering a 44% active ingredient load.

CENTURO U-PRO

CENTURO U-PRO is a next-generation nitrification inhibitor used to delay nitrification in dry fertilizers containing ammoniacal nitrogen, including granular urea. It is a highly concentrated formulation, delivering a 44% active ingredient load.

CENTURO

CENTURO is a nitrification inhibitor used to delay nitrification in anhydrous ammonia and UAN.

Find a Rep or Retailer

With our network of knowledgeable representatives, retailers and distributors, you can be confident you will get the best solution for your unique needs. Find your nearest Koch Agronomic Services, LLC, representative.