Quantifying the contribution of pulse crop residues to greenhouse gas emissions, nitrogen nutrition and the growth of a subsequent wheat crop: A dual isotope labeling approach

  • Soil Health
  • Sustainability
  • University of Saskatchewan

Lead Investigator(s)

Dr. Richard Farrell

Lead Investigator(s) Institution

University of Saskatchewan - Dept. of Soil Sciences


To calculate a residue-induced nitrous oxide (N2O) emission factor for the major pulse crops and wheat grown in Saskatchewan. To provide a side-by-side comparison of biological nitrogen fixation (BNF) and net N2O and CO2 budgets from the major pulse crops (and a wheat control) grown in Saskatchewan. To determine the partitioning of nitrogen (N) and carbon (C) in above- and below-ground residues from different pulses to soil organic matter (SOM) pools. To determine the total contribution (mass balance) of residue-derived N and C into SOM pools and into the biomass growth of a subsequent wheat crop in rotation with the pulses.

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SPG Contribution


Project Status


Duration/Timeline of Project (Year to Year)

2014 - 2018


Saskatchewan Ministry of Agriculture - Agriculture Development Fund, Western Grains Research Foundation