Nitrogen stabilizers to enhance nitrogen use efficiency and reduce greenhouse gas emissions

IPNI-2014-CAN-4RC05

Background In Alberta, in fall, 2013 we initiated experiments in three Alberta locations on the effects of nitrogen stabilizers applied to spring wheat. Experiments were designed as factorials with 3 factors: 1. Nitrogen form (eNtrench impregnated urea (nitrification inhibitor); SuperU (nitrification and urease inhibitor on urea); polymer-coated urea (ESN); and urea); 2. Nitrogen rate (50, 77, 100 and 125% of soil test recommendations) and 3. Read more


Year of initiation:2014
Year of completion:?
Map:

Interpretive Summary

The main objective of this project is to assess the effect of various commercially available forms of stabilized N on nitrous oxide (N2O) emissions, nitrate leaching, nutrient use efficiency (NUE), and crop yield response in cereal and oilseed crops. The experiment used a factorial set of 4R-based treatments involving the form, rate, timing, and placement of N fertilizers.

The use of stabilized and enhanced efficiency forms of N fertilizer has potential to reduce unwanted losses of applied N fertilizer through ammonia volatilization, leaching, and or denitrification. The main objective of this project is to assess the effect of various commercially available forms of stabilized N on nitrous oxide (N2O) emissions, leaching, nutrient use efficiency (NUE), and crop yield response in cereal crops.

Canadian annual use of N fertilizer is 1. 8 M t, however due to natural soil and plant interactions with applied N fertilizers, efficiency of plant uptake and utilization, is often around 50% of applied N, in the year of application. Much of the applied N that is not taken up by the crop remains in the soil.

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Updates & Reports

2014

Project Description


Project Leader

Myles Dick, University of Alberta


Project Cooperators

None


IPNI Staff

T. Jensen


Location

Americas \ Northern America \ CAN \ Alberta


Topics

4r research fund

wheat

Nitrogen (N)