Knowledge Center for Agriculture Solutions | Koch Agronomic Services
Knowledge Center for Agriculture Solutions | Koch Agronomic Services
Should You Use a Nitrification Inhibitor with Fall-Applied Nitrogen?
Article Categories: US, Blog Icon BLOG
As fall approaches and soil temperatures drop, many growers in the Northern Corn Belt will be taking to the field to start fall nitrogen applications. While fall is a great time for nitrogen applications, it comes with varied weather conditions and the risk of nitrogen loss, making it beneficial to use a nitrification inhibitor such as CENTURO nitrogen stabilizer.

CENTURO is a nitrification inhibitor that growers can now use with anhydrous ammonia to help protect against nitrogen loss from leaching or denitrification. Nitrification inhibitors are an important tool for protecting applied nitrogen and keeping the valuable nutrient available in the root zone in the ammonium form where it’s less susceptible to loss.

By slowing the conversion of ammonium to nitrate, CENTURO, as shown in the graph below, can hold nitrogen in the ammonium state three times longer than untreated ammonia1. With fall-applied anhydrous, more ammonium will be held in the soil through the spring, maximizing availability for crop uptake.


By keeping more nitrogen available for plant uptake, research has shown CENTURO can improve nutrient-use efficiency and yields. Using CENTURO also follows the recommendation of the 4R Nutrient Stewardship Initiative, by keeping nutrients available when crops need them, and where the crops can use them. When it comes to protecting fall-applied nitrogen, don’t leave it to chance – protect your investment with CENTURO. 

To learn more about CENTURO, visit or contact your KAS rep

For the timing of NH3 fall applications we recommend following university extension best management practices. 

As fall fertilizer applications start, remember to visit our top four tips for fall nitrogen applications by clicking here

1The underlying data is based on third-party laboratory studies funded by Koch Agronomic Services; results may vary based on a number of factors, including environmental conditions. 

The 4R approach is endorsed and supported by the International Plant Nutrition Institute, The Fertilizer Institute, The Canadian Fertilizer Institute and the International Fertilizer Industry Association.  To learn more about the 4R Nutrient Stewardship visit their website at:
CENTURO is not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. CENTURO and the CENTURO logo are trademarks of Koch Agronomic Services, LLC. Koch and the Koch logo are trademarks of Koch Industries, Inc. © 2018 Koch Agronomic Services, LLC.

Article Categories: US, Blog Icon BLOG
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For more than a decade, Justin Speth has worked in agriculture retail. He’s been hands-on with products since he started his career. During much of that time, he has faced challenges with the nitrogen stabilizer products he was using on anhydrous ammonia and urea ammonium nitrate (UAN).
Article Categories: Blog Icon BLOG, Nitrogen Loss, US
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Fall fertilizer decisions can be one of the most important decisions a grower can make to help boost crop performance and help provide efficiencies when it comes to spring workload.
Article Categories: Blog Icon BLOG, US