Canola Response and Minimizing Nitrogen Losses in Two-Pass Seeding-Fertilization Systems with Varying Placement Methods in Manitoba

Researcher: Mario Tenuta, Kevin Baron, Brad Sparling, Mervin Bilous, Don Flaten, University of Manitoba

Project Code: CARP CCC 2016-25

Final Report: August 2017

Summary: With increasing pressure to complete field operations in a timely manner and the trend
to using fertilizer custom applicators, a segment of growers in Western Canada are transitioning towards surface applications of granular urea; which represents a departure from the recommended practice of deep banding. Researchers at the
University of Manitoba conducted a three-year project to evaluate combinations of right placement and N source practices in canola, with specific emphasis on changes in source and placement that increase nitrogen use efficiency and reduce N2O emissions. The results verify past research that subsurface banding of granular urea
improves yields (3 to 5 bu/ac) compared to surface application. As well, surface application in fall is much less efficient than spring application. Although there was no benefit to yield in using granular urea with urease alone or urease plus nitrification inhibitors, urease plus nitrification inhibitor did reduce N2O and NH3 loses for surface applied granular urea.

Click the links below to download a short version of the report, the full detailed long version of the report, or the related Canola Digest PDF.

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