Knowledge Center | Koch Agronomic Services
Knowledge Center | Koch Agronomic Services
Study Shows Threat of Cold Weather Volatilization Without Urease Inhibitor
Article Categories: Blog Icon BLOG, US
Article Tags: ANVOL
Nitrogen volatilization can occur in all weather conditions, including both warm and cold temperatures. But no matter how or when fertilizer is applied, without a stabilizer, it’s vulnerable to loss.

Fall-applied nitrogen can benefit growers by taking some of the pressure off spring applications that can often be delayed by weather. However, regardless of soil temperatures, a nitrogen inhibitor needs to be included in your plan to help ensure you’re maximizing your fertilizer inputs.

The Volatilization Process

Volatilization occurs when the urease enzyme breaks the urea molecule into ammonia gas, which is a process called urea hydrolysis. This process is a chemical reaction that is not dependent on temperature, meaning the reaction can occur in freezing temperatures.

Some believe untreated urea isn’t at risk to volatilization when the weather cools after harvest. But numerous studies, including one conducted by the agronomists at Kansas State University, contradict those beliefs.

2018-Nitrogn-Loss-to-Volat-Chart_lines

The study

In field trials completed by Kansas State University, their team studied the nitrogen volatilization during temperatures averaging 37 degrees Fahrenheit.

After one month, they found that up to 30 percent of untreated urea was lost to volatilization ­– ten times higher than the average loss of 2.7 percent when treated with AGROTAIN®, the predecessor to ANVOL® nitrogen stabilizer. 

2018-Nitrogn-Loss-to-Volat-BarChart

Introduced in 2019, ANVOL is built upon the protections AGROTAIN has offered to growers for more than 20 years. For ANVOL, the difference is Duromide ­– a patented active ingredient delivering the longest-lasting urease inhibitor over a wider range of soil environments to help growers across the country.

To learn more about ANVOL and how it can help protect your nitrogen investment through different weather conditions, visit ANVOL.com.


The underlying data was provided by Kansas State University under a Research Trial Financial Support Agreement with Koch Agronomic Services, LLC and neither Kansas State University, nor the individual researchers referenced, endorse or recommend any product or service


Article Categories: Blog Icon BLOG, US
Article Tags: ANVOL
Blog Icon
As you plan for the next growing season, fluctuating commodity prices may have you looking at your expenses. In order to manage tighter margins, you could even be tempted to cut input costs but it may end up hurting your bottom line.
Article Categories: Blog Icon BLOG, US
Blog Icon
Each year, new agronomic solutions are introduced for growers to consider using to help them better their operation. The best of those allow growers to use fewer resources, potentially saving them money in the long run and promoting a more sustainable future.
Article Categories: Blog Icon BLOG, Nitrogen Loss, US
Blog Icon
UAN is a combination of urea, ammonium nitrate and water that forms to combine this liquid fertilizer.
Article Categories: Blog Icon BLOG, US
Video Player Icon
To produce higher yields, growers need to be resourceful. And as you look for sustainable options to best manage nutrients, preventing nitrogen loss is a top concern. To do that, you have to understand the three types of nitrogen loss and the tools you have to prevent it.
Article Categories: Video Player Icon VIDEO, Field Notes, Nitrogen Loss, US