Nitrogen Recommendation Recalibrations for Wheat in North Dakota
A multiple year research study updating N response and recommendations for wheat in various agro-ecological areas of North Dakota.
IPNI-2007-USA-ND15
02 Feb 2009
2008 Annual Interpretive Summary
Nitrogen Recommendation Recalibrations for Wheat in North Dakota, 2008
The current N recommendations for spring wheat in North Dakota (2.5 X Yield Potential less credits) were developed more than 30 years ago when there was no ability to vary rates within a field and N prices were less than 10 cents/lb of N. Our review of old and more modern N calibration data do not support our current recommendations, especially considering cost increases for N fertilizer and grain prices, as well as improved methods of planting and fertilizer application. Growers need updated recommendations to determine required N rates that are economical and relevant to their wheat-growing abilities. The objective of this 2-year study is to add necessary modern sites, complete with modern soil analysis, to our older data in order to develop better, more efficient N recommendations for growers in every corner of North Dakota.
Progress on the field research required to generate the database to recalibrate the N fertilizer recommendations for North Dakota has proceeded well. The first year of the tentative 2-year project has been completed with all research sites being conducted as planned. However, not all research data is available for summary at the time of preparation of this interpretive summary. ND-15