Northwest and Allee Research and Demonstration Farms
Authors: John E. Sawyer (Iowa State University) , Daniel W. Barker (Iowa State University)
This project is designed to study the nitrogen (N) fertilization needs in continuous corn (C-C) and corn rotated with soybean (C-S) as influenced by location and climate. Multiple rates of N fertilizer are applied in the spring, with the intent to measure the yield response to N fertilization within each rotation on a yearly basis at multiple sites across Iowa. This allows the determination of N requirements for each rotation practice, differences that exist between the two rotations, responses to applied N across different soils and climatic conditions, and evaluation of tools used to adjust the N application.
Keywords: Agronomy
How to Cite: Sawyer, J. E. & Barker, D. W. (2006) “Seasonal and Rotational Influences on Corn Nitrogen Requirements”, Iowa State University Research and Demonstration Farms Progress Reports. 2005(1).