Seasonal and Rotational Influences on Corn Nitrogen Requirements

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2003-01-01
Authors
Sawyer, John
Sawyer, John
Barker, Daniel
Barker, Daniel
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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 fertilization within each rotation on a yearly basis for multiple years at multiple sites across Iowa. This will help determine N requirements for each rotation 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.

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