College of Agriculture and Bioresources


Soil Science

Research Interests

My focus is on landscape-scale soil processes and the spatial pattern of soil properties that results from the action and interaction of these processes. The landscape is primarily defined by topography and land use, and these two factors in turn control and regulate the primary control on the occurrence and rate of soil processes, hydrology. The complex interaction between relatively static controlling factors and dynamic processes is the core of the research work, which can be applied to diverse topics such as variable rate fertilization, soil organic carbon change and soil erosion and deposition. Current research areas include greenhouse gas dynamics in natural and cultivated landscapes and improving our understanding of the soil genetic processes (and resulting soils) that occur at the boundaries between major western Canadian biomes.



B.Sc., M. Sc. (Calgary), Ph.D. (Queen’s)

Selected Recent Publications

Degenhardt, D., Humphries, D., Cessna, A. J., Messing, P., Badiou, P. H., Raina, R., Farenhorst, A. and Pennock, D. 2012. Dissipation of glyphosate and aminomethylphosphonic acid in water and sediment of two Canadian prairie wetlands. Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes 47:631-639.

Pennock, D., Arocena, J. M. and Smith, C. A. S. 2011. Preface to Special Issue on the Soils of Canada. Canadian Journal of Soil Science 91:671-673.

Pennock, D., Bedard-Haughn, A. and Viaud, V. 2011. Chernozemic soils of Canada: Genesis, distribution, and classification. Canadian Journal of Soil Science 91:719-747.

Badiou, P. H., McDougal, R., Pennock, D. and Clark, B. 2011. Greenhouse gas emissions and carbon sequestration potential in restored wetlands of the Canadian prairie pothole region. Wetlands Ecology and Management 19:237-256.

Degenhardt, D., Cessna, A. J., Raina, R., Farenhorst, A. and Pennock, D. J. 2011. Dissipation of six acid herbicides in water and sediment of two Canadian Prairie wetlands. Environ. Toxicol. Chem. 30:1982-1989.

Gu, J., Berbard, N., Rochette, P., Pennock, D., Henault, C., Cellier, P. and Richard, G. 2011. Effects of topography on nitrous oxide emissions from winter wheat fields in Central France. Environmental Pollution 159:3149-3155.

Pennock, D., Yates, T. T., Bedard-Haughn, A., Phipps, K., Farrell, R. and McDougal, R. 2010. Landscape controls on N2O and CH4 emissions from freshwater mineral soil wetlands of the Canadian Prairie Pothole Region. Geoderma 155:308-319.

Bai, Y. G., Colberg, T., Romo, J. T., McConkey, B., Pennock, D. and Farrell, R. 2009. Does expansion of western snowberry enhance ecosystem carbon sequestration and storage in Canadian Prairies? Agric. Ecosyst. Environ. 134:269-276.

Degenhardt, D., Cessna, A. J., Raina, R., Pennock, D. J. and Farenhorst, A. 2009. Trace level determination of selected sulfonylurea herbicides in wetland sediment by liquid chromatography electrospray tandem mass spectrometry. Journal of Environmental Science and Health Part B-Pesticides Food Contaminants and Agricultural Wastes 45:11-24.

Matson, A., Pennock, D. and Bedard-Haughn, A. 2009. Methane and nitrous oxide emissions from mature forest stands in the boreal forest, Saskatchewan, Canada. Forest Ecology and Management 258:1073-1083.

Xu, D., Meyer, S., Gaultier, J., Farenhorst, A. and Pennock, D. 2009. Land Use and Riparian Effects on Prairie Wetland Sediment Properties and Herbicide Sorption Coefficients. Journal of Environmental Quality 38:1757-1765.

Selected Awards

Fellow of the Canadian Society of Soil Science (2009)
University of Saskatchewan Master Teacher (2006)
Teaching Award of Merit, North American Colleges and Teachers of Agriculture (2005)
Agricultural Students Association Professor of the Year (1994, 2005)


Undergraduate courses:

  • EVSC 110 Renewable Resources and Environment
  • AGRC 111 Plant Production and Soil Management (with Krista Wilde)
  • EVSC 203 Field Sampling and Laboratory Analysis (with Derek Peak)
  • RRM 321 Resource Data and Environmental Modeling

Graduate courses:

  • SLSC 834 Field Studies in Saskatchewan Soils