Corn Yield Response to Nitrogen Fertilizer Application Timing in Southwest Iowa

Date
2017-01-01
Authors
Lundvall, John
Barker, Dan
Sawyer, John
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Altmetrics
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Agronomy
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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.

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