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A Late Spring - Nitrogen Considerations

John Sawyer, Professor, Department of Agronomy, Iowa State University
April 18, 2018

Winter seems to be never ending, and spring not arriving. This could lead to a compressed period for field work before corn planting begins. There are conversations underway about switching planned spring preplant anhydrous ammonia to another nitrogen (N) product like urea-ammonium nitrate solution (28 or 32% UAN) or granulated urea. And likely discussions about changing from preplant to sidedress applications. What should be considered? Perhaps the most important item is to have a conversation between dealer and farmer to ensure product availability when desired, equipment needed for application, and any associated change in costs.

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Welcome to the Iowa State University Agronomy Extension Soil Fertility Home Page. Nutrient topics are listed in the drop down menu. Simply click on a topic of interest and you can find information about that topic, including Extension publications, newsletter articles, conference proceedings and reports, presentations, and links to other related sites. Links also provide access to soil fertility decision aid tools, and a photo gallery.