PUBLICATION W1273

Ammonia Volatilization from Unincorporated, Surface-Applied UAN on Alkaline Soils

Publish Date: August 08 2024 |  Language: English

DOI: doi.org/10.7290/UTIAPub/W1273

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Summary

Under normal conditions, ammonia volatilization from surface application of urea ammonium nitrate (UAN) tends to be lower than surface application of urea. It’s important that farmers are well acquainted with situations when surface-broadcast of UAN results in above average ammonia loss, and in some instances greater losses than urea. This fact sheet provides information on situations where ammonia loss from unincorporated, surface-applied UAN exceeds traditional losses.