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October 6, 2025

Fall Applications, Spring Payoff: Making Nitrogen Work Harder

For many North Dakota growers, fall nitrogen application has become a practical way to get ahead of the busy spring season. Post-harvest conditions often mean easier field access, more equipment availability, and reduced labor bottlenecks. Applying nitrogen in the fall helps set the stage for timely spring planting and a strong start to the growing season.

Nitrogen Loss Doesn’t Wait for Spring

“Freeze-thaw cycles, snowmelt and spring saturation all create conditions where un-stabilized nitrogen just doesn’t stay put,” says Zach Leier, territory business manager, North Dakota. “With fertilizer prices high and margins tight, even modest loss can have a meaningful financial impact.”


While frozen soils may seem to “lock in” nutrients, the reality is different. Volatilization, leaching and denitrification can occur during fall thaws and again as soils warm in spring. Without protection, fall-applied nitrogen faces multiple loss pathways that reduce return on your fertilizer investment.

  • Volatilization: Urea granules at the soil surface can convert to ammonia gas and escape.
  • Leaching: Excess moisture during snowmelt can move nitrate below the root zone.
  • Denitrification: Saturated soils can transform nitrate into nitrogen gases, lost to the atmosphere.

“I tell growers the same thing every fall: stabilizers aren’t just another input; they’re insurance for your nitrogen investment,” Leier explains. “Stabilizers make sure your fertilizer dollars will still be working for you when the crop needs them in spring.”

Making Fall Nitrogen Count

Stabilizing fall-applied nitrogen is about more than protecting yield; it’s about protecting your bottom line. When you use stabilizers, you:

  • Safeguard your nitrogen investment against loss during fall thaws and spring snowmelt.
  • Improve nitrogen use efficiency, giving crops greater opportunity to access applied nutrients.

Stabilizers: A Proven Solution for Fall N Applications

Koch Agronomic Services offers solutions designed to protect nitrogen through the off-season, keeping more of it available for your crop in spring.

  • ANVOL nitrogen stabilizer helps minimize volatilization losses in broadcast applications. Its patented active ingredient, Duromide, extends protection longer than NBPT alone, helping keep nitrogen in the soil where it belongs.
  • SUPERU™ premium fertilizer provides built-in protection against volatilization, denitrification and leaching. With both urease and nitrification inhibitors in a ready-to-use granule, SUPERU delivers consistent coverage across the field.
  • CENTURO nitrogen stabilizer minimizes below-ground losses from leaching and denitrification. With its Pronitridine technology and noncorrosive formulation, CENTURO delivers flexible protection that’s easy to handle and safe on equipment. 

Fall applications can be a smart way to spread out labor and equipment needs, but only if nitrogen is protected through to spring. By incorporating trusted products like ANVOL nitrogen stabilizer, CENTURO nitrogen stabilizer, and SUPERU premium fertilizer North Dakota farmers can be confident their nitrogen investments will deliver results when the crop needs it most.

Explore the full KAS stabilizer portfolio at TheNitrogenWin.com