Illinois Fertilizer & Chemical Association
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Field trials look for nitrogen answers

Nitrogen rates, forms and application timings are the focus of multi-year trials funded by the Illinois Nutrient Research and Education Council.
Emerson Nafziger, University of Illinois Crop Sciences professor emeritus and primary investigator of the on-farm trials, provided his observations from the research findings in an Illinois Fertilizer and Chemical Association-hosted webinar Oct. 19.
A primary objective of the work is to gather data on the response of corn grain to nitrogen fertilizer rates with replicated, field-scale trials at numerous on-farm locations.
Trails include comparing fall- and spring-applied or early spring and sidedressed nitrogen rates. The trials also evaluate combinations of nitrogen rates, form, inhibitor treatments, and application timing on corn yield and economic return.
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