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 nitrogen (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 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)