Urea vs. Ammonium Nitrate Farming Note

In Britain, approximately 85% of Fertiliser-N used is in the form of Ammonium Nitrate (AN), whilst Urea in its solid or liquid form only contributes 15%. This is in stark contrast to the rest of the world where urea use as a Fertiliser-N source dominates. Urea may be a suitable fertiliser choice for your farm at certain times of the year, however there are some factors associated with its application which need considering.

This Farming Note covers:

• Routes of N uptake in the soil
• Volatilisation
• How to use urea
• Comparison of urea and ammonium nitrate

Issued February 2013.

About Kingshay Farming Notes

Since 1991 Kingshay has been publishing Farming Notes on issues critical to the success of a modern dairy farm business. These briefings provide dairy farmers, large animal vets, farm consultants and other interested parties with the most important and timely information in a concise two-page format. The information contained in our Farming Notes is written and updated by our experts to ensure accuracy and save you time.

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