This project was designed to study the N fertilization needs in continuous corn (CC) and corn rotated with soybean (CS) as influenced by location and climate. Multiple rates of fertilizer N were 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 allow determination of N requirements for each rotation, differences that exist between the two rotations, responses to applied N across different soils and climatic conditions, and evaluation of tools used to adjust N application.
How to Cite:
Sawyer, J. E. & Barker, D., (2017) “Seasonal and Rotational Influences on Corn Nitrogen Fertilization in South Central Iowa”, Iowa State University Research and Demonstration Farms Progress Reports 2016(1).