Evaluating and improving APSIM's capacity in simulating long-term corn yield response to nitrogen in continuous- and rotated-corn systems

Mitchell E. Baum, John E. Sawyer, Emerson D. Nafziger, Isaiah Huber, Peter J. Thorburn, Michael J. Castellano and Sotirios V. Archontoulis

Agricultural Systems, 2023, vol. 207, issue C

Abstract: Process-based models are increasingly used to explain and predict crop yields and long-term changes in soil organic matter (SOM) and hence should be regularly evaluated for their accuracy. Currently, there is a knowledge gap of how well process-based models can estimate the economic optimum nitrogen rate (EONR) across environments and years.

Keywords: Economic optimum nitrogen rate; Crop modeling; Continuous corn yield penalty; Yield response to nitrogen (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:agisys:v:207:y:2023:i:c:s0308521x23000343

DOI: 10.1016/j.agsy.2023.103629

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