Evaluation of nitrogen fertilizer additives for enhanced efficiency in corn on Iowa soils

Recent years of high rainfall and prolonged wet soil conditions in Iowa have renewed interest to protect losses of fertilizer nitrogen (N) in corn. This study evaluated effect of N additives and a slow‐release urea product on the soil NO 3 –N fraction of total inorganic N, mid–vegetative growth N stress, grain yield, and corn nitrogen use efficiency. Earn 1 CEU in Nutrient Management by reading this article and taking the quiz at www.certifiedcropadviser.org/education/classroom/classes/516 .