The objective of this project was to measure corn yield response to fertilizer nitrogen (N) application timing (spring pre-plant or at-planting vs. split/side-dress) across multiple N rates (0 to 250 lb total-N/acre). Results were determined through fitting yield response to N-rate regression equations and calculation of economic optimum nitrogen rate (EONR) based on a 0.10 N fertilizer price-to-corn price ratio.
How to Cite:
Lundvall, J. & Barker, D. & Sawyer, J. E., (2017) “Corn Yield Response to Nitrogen Fertilizer Application Timing in Southwest Iowa”, Iowa State University Research and Demonstration Farms Progress Reports 2016(1).