Performance and refinement of nitrogen fertilization tools
Creators
- 1. Agricultural Research Service
- 2. South Dakota State University
- 3. McCain Foods*
- 4. Dairyland Laboratories*
- 5. Purdue University West Lafayette
- 6. Corteva Agriscience
- 7. University of Nebraska - Lincoln
- 8. University of Minnesota
- 9. North Dakota State University
- 10. University of Wisconsin-Madison
- 11. University of Illinois at Urbana Champaign
- 12. Iowa State University
Description
Improving corn (Zea mays L.) N management is pertinent to economic and environmental objectives. However, there are limited comprehensive data sources to develop and test N fertilizer decision aid tools across a wide geographic range of soil and weather scenarios. Therefore, a public-industry partnership was formed to conduct standardized corn N rate response field studies throughout the U.S. Midwest. This research was conducted using a standardized protocol at 49 site-years across eight states over the 2014 to 2016 growing seasons with many soil, plant, and weather related measurements.
Notes
Major issues were noted within the dataset and separately in a summary document. Those interested in using these data for further analysis are advised to familiarize themselves with these issues and are encouraged to consider working with authors that have first-hand knowledge of the study. The most prominent issues are listed here:
- A 2015 Nebraska site showed a limited response to N which was believed to result from the previous soybean (Glycine max [L.] Merr) crop being severely damaged from hail, resulting in grain left on the soil—which was a source of mineralizable N.
- Intensive precipitation events caused ponding with substantial N lost from the 2015 Missouri sites and extensive anoxic plant stress from the anaerobic conditions in the root zone.
- An errant 45 kg N ha-1 was applied on all treatments on a 2016 North Dakota site. For some analyzes, adjustments taking this error into account were done (e.g., EONR).
- A high wind event late in the vegetative growth development stages resulted in lodging at one of the 2016 Iowa sites for all treatments, but especially affected treatments that received high N rates at planting.
Shapefiles of the plot boundaries with the corresponding treatments are available in the "Plot_Boundaries_Shapefiles.zip" folder. Files are organized by year and by state with each site-year a separate shapefile.
Funding provided by: Corteva Agriscience
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100015614
Award Number:
Files
Plot_Boundaries_Shapefiles.zip
Files
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Additional details
Related works
- Is cited by
- 10.1016/j.compag.2019.104872 (DOI)
- 10.2489/jswc.73.5.587 (DOI)