Nitrogen Recalibration for Corn in North Dakota

The nitrogen (N) recommendations for corn in North Dakota (ND) need to be updated using actual field results from ND. Existing recommendations are based on Minnesota data, and older ND field calibration data. There have been many changes in cropping systems especially conservation tillage adoption, weed control, and corn hybrid genetics. Many of the newer hybrids are more resistant to water limiting conditions experienced in parts of ND. The study will consist of N response research experiments at a number (8 to 10) of sites depending on resources and locating suitable field research sites. This study will be conducted for two years to generate data for up to 20 site-years of research results.

IPNI-2009-USA-ND16

The nitrogen (N) recommendations for corn in North Dakota (ND) need to be updated using actual field results from ND. Existing recommendations are based on Minnesota data, and older ND field calibration data. There have been many changes in cropping systems especially conservation tillage adoption, weed control, and corn hybrid genetics. Many of the newer hybrids are more resistant to water limiting conditions experienced in parts of ND. Read more


Year of initiation:2009
Year of completion:2013
Map:

Interpretive Summary

This was the final year of a three-year project initiated in 2010 with the objectives to a) build a data base of N application rate trials across important corn-producing regions of North Dakota with the goal of improving N fertilizer rate recommendations for corn growers, and b) develop algorithms with active optical sensors with the purpose of directing in-season N application rates for corn.

Field research on this project has progressed well. The third year of a four year project has been completed in the 2012 crop year. A total of 64 site-years of experiments have been conducted so far. Only eight site-year experiments have been abandoned and data not included because of problems with flooding (6 site-years), inadequate stand establishment (1 site-year) and deer damage (1 site-year).

This is the second year of the project designed to allow the research-based re-evaluation of the corn N recommendations in North Dakota. A total of 22 sites were planned in 2011. With the sites from 2010, there have been a total of 36 sites that can be evaluated.

This project is intended to be conducted for 3 years, at 15 to 16 sites each year in order to gather sufficient data to allow the development of N recommendations for dryland corn in various corn-growing regions of North Dakota. Each site was carefully selected after being screened for residual N so that soil N levels were low enough to ensure crop response to added N fertilizer.

All the 2010 research sites for this project were arranged, characterized, and prepared by taking soil samples. The research experiments will be planted during the growing seasons of 2010 and 2011. Experimental factors to be evaluated are N response curves from increasing rates of N along with a zero N treatment, as well as different responses of the selected corn hybrids grown.

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Updates & Reports

2010

2010 Annual Report

2009

Project Description


Project Leader

David Franzen, North Dakota State University


Project Cooperators

None


IPNI Staff

T. Jensen


Location

Americas \ Northern America \ USA \ North Dakota


Topics

4r rate, nutrient management

maize

Nitrogen (N)