Corn Yield Response to Nitrogen Fertilizer
Application Timing in Northern Iowa
Date
2017-01-01
Authors
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Altmetrics
Authors
Person
Sawyer, John
Contingent Worker
Contingent Worker
Contingent Worker
Contingent Worker
Contingent Worker
Person
Barker, Daniel
Researcher
Research Projects
Organizational Units
Journal Issue
Journal Issue
Is Version Of
Versions
Series
Department
Extension and Experiment Station PublicationsAgronomy
Abstract
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.