Coordinated nitrogen and sulfur management in S-deficient soils


Background Although there is approximately 4 million ha S-deficient soils in the cultivated areas of the Canadian prairie Provinces, an additional 8 million ha is estimated to be potentially deficient (Solberg et al. , 2007). Much of the research to date has focused on the effect of N fertilization on N20 emission and /or carbon sequestration. Read more

Year of initiation:2014
Year of completion:?

Interpretive Summary

Approximately, 60% of the current increase in atmospheric N2O (nitrous oxide) emanates from agricultural soils.

Experiments have shown that long-term management practices such as crop rotation, tillage, and fertilization schemes affect soil nutrient cycling and crop response to fertilizer. This study consists of measuring N2O emissions from a long-term crop rotation and nutrient management study that has been conducted since 1929 at the University of Alberta Breton Plots Research Site.

Long-term soil experiments have shown management practices such as rotation, tillage and fertilization affect soil nutrient cycling and crop response to fertilizer. The majority of soil fertility research has quantified the benefit of fertilizers in the growing season they are applied, but there is a need for research quantifying the effects of long-term fertilizer applications on soil quality, nutrient use efficiency and nitrous oxide fluxes.

↑ Show less ↑

Updates & Reports


Project Description

Project Leader

Miles Dyck, University of Alberta

Project Cooperators


IPNI Staff

T. Jensen


Americas \ Northern America \ CAN \ Alberta


4r research fund

alfalfa, barley, oat, wheat

Nitrogen (N), Sulfur (S)