Armstrong Memorial Research and Demonstration Farm
Authors: John E. Sawyer (Iowa State University) , Daniel W. Barker (Iowa State University)
This project is designed to study nitrogen (N) fertilization needs in continuous corn (C-C) and corn rotated with soybeans (C-S) as influenced by location and climate. Multiple rates of N fertilizer are spring applied, with the intent to measure yield response to N within each rotation on a yearly basis for multiple years at multiple sites across Iowa. This will help determine N requirements for each rotational practice, differences that exist between the two rotations and responses to applied N across different soils and climatic conditions. It will also allow for the evaluation of tools used to adjust N application.
Keywords: Agronomy
How to Cite: Sawyer, J. E. & Barker, D. W. (2003) “Seasonal and Rotational Influences on Corn Nitrogen Requirements, Armstrong Farm”, Iowa State University Research and Demonstration Farms Progress Reports. 2002(1).