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Fall nitrogen applications

It is not too early to start making plans for the next growing season. For some farmers, nitrogen (N) application in the fall is one of the many important decisions to make. Nitrogen is not only a large input in most corn farming operations, but it also represents an important input in terms of the environment.


Decreasing loss when using urea

Selecting the right nitrogen source when fertilizing pastures and hayfields has always been important in nitrogen use efficiency. For many years we have had the option of using either urea or ammonium nitrate as the nitrogen source in our fertilizers. A basic recommendation was to use urea in spring, but use ammonium nitrate in summer and early fall. Urea was usually cheaper, but more prone to nitrogen loss due to volatilization, which occurs in hot weather with limited rainfall.


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