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If you apply liquid nitrogen in the form of 28% or 32%, you should be using SOIL Cal®. SOIL Cal can increase your profits by ensuring you get the most you can out of your nitrogen.


  • Is an excellent nitrogen stabilizer.
  • Mixes readily with 28% or 32% nitrogen formulations.
  • Helps keep nitrogen stable in your soil profile.

SOIL Service’s Nutrient Recycling Program

SOIL Cal is one of four components in our Nutrient Recycling Program, a program that stimulates natural biological life in the soil to break down the stalks and stubble left in the fall. The longer the microbes have to work on the crop residue, the more nutrients are released for next year’s crop.

This biological activity keeps the soil bacteria and fungi in a healthy balance, which is good for your crop’s potential yield and has been shown to greatly improve overall plant health.

SOIL Cal Research: Proven Results

Bar chart displaying 2019 SOIL Cal results

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