Armstrong Memorial Research and Demonstration Farm

Corn Yield Response to Nitrogen Fertilizer Application Timing in Southwest Iowa

Authors: John Lundvall (Iowa State University) , Dan Barker (Iowa State University) , John E. Sawyer (Iowa State University)

  • Corn Yield Response to Nitrogen Fertilizer
Application Timing in Southwest Iowa

    Armstrong Memorial Research and Demonstration Farm

    Corn Yield Response to Nitrogen Fertilizer Application Timing in Southwest Iowa

    Authors: , ,

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.

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).

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Published on
01 Jan 2017
Peer Reviewed