Has transition to no-tillage resulted in more free-living soil nitrogen fixation?

  • Soil Health
  • Sustainability
  • University of Saskatchewan

Lead Investigator(s)

Dr. Diane Knight

Lead Investigator(s) Institution

University of Saskatchewan - Dept. of Soil Sciences


To estimate amounts of N2 fixed by free-living organisms in soil under annual tillage and minimum-tillage. To determine how soil zone and soil texture affect free-living N2 fixation. To determine how community structure and activity of free-living N2 fixing bacteria is affected by tillage management. To evaluate if/how annual climate affects structure and activity of free-living N2 fixing bacteria. To evaluate how soil moisture affects free-living N2-fixing community structure.

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SPG Contribution


Project Status


Duration/Timeline of Project (Year to Year)

2015 - 2018


Western Grains Research Foundation

Total Project Cost