Armstrong Memorial Research and Demonstration Farm
Authors: John Lundvall (Iowa State University) , John Sawyer (Iowa State University)
The research objective of this study was to measure corn yield response to nitrogen (N) rate in two tillage systems, tilled and no-till, in a soybean-corn rotation. Results were summarized across sites and years by analysis of the main effects and interaction of N rate and tillage system on corn yield, and through fitting N rate response equations. The across site-year response equations were used to determine economic optimum N rate (EONR) based on a 0.10 N fertilizer price-to-corn price ratio.
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How to Cite: Lundvall, J. & Sawyer, J. (2019) “Corn Yield Response to Tillage and Nitrogen Fertilizer Rate”, Iowa State University Research and Demonstration Farms Progress Reports. 2018(1).