O'Donovan, John, Ph.D.

Research Scientist

Contact Information:

6000 C and E Trail
PO Box 29
Lacombe, Alberta T4L 1W1
Telephone: 403-782-8123
Fax: 403-782-6120
Email: john.odonovan@agr.gc.ca

Areas of Expertise:

  • Cropping systems agronomy
  • Conservation tillage systems
  • Integrated weed management
  • Weed resistance to herbicides

Current Projects:

  • Integrated Best Management practices for substainable malt and feed barley production
  • Agronomic, ecological and economic implications of RR crops in rotation.
  • Canola Production Research Phase II
  • Provide knowledge of weed biology, population dynamics, and community ecology as the basis for the development of integrated contol startegies with reduced impact on the environment
  • Develop strategies that enhance sustainability by understanding the interaction of factors limiting ecosystem productivity.
  • Development of wheat yield loss and economic threshold models for volunteer barley control in imidazolinone tolerant wheat

Affiliations:

  • Adjunct Professor, University of Alberta
  • Member of American Society of Agronomy
  • Member of Weed Science Society of America
  • Member of Canadian Weed Science Society

Research Publications:

The links below lead to abstracts with access to full text.

2013:

  • Harker, K.N. and O'Donovan, J.T. (2013). "Recent weed control, weed management, and integrated weed management.", Weed Technology, 27(1), pp. 1-11. doi : 10.1614/wt-d-12-00109.1
  • O'Donovan, J.T., Harker, K.N., Turkington, T.K., and Clayton, G.W. (2013). "Combining cultural practices with herbicides reduces wild oat (Avena fatua) seed in the soil seed bank and improves barley yield.", Weed Science, 61(2), pp. 328-333. doi : 10.1614/WS-D-12-00168.1

2012:

2011:

2010:

2009:

Other Science Related Publications:

2012:

  • Beaudoin, N., Sansoulet, J.B., Pattey, E., Grant, C.A., Blackshaw, R.E., Harker, K.N., Johnson, E.N., O'Donovan, J.T., and Gervois, S. (2012). "Adaptation de STICS à la culture de canola au Canada à partir du module colza en vue de simuler les émissions de N2O par ModuloSTICS.", IXe Séminaire du modèle de culture STICS, Sainte-Montaine, France, October 16-19, 2012. (Poster)
  • Harker, K.N. and O'Donovan, J.T. (2012). "Canola after pulse crops.", Agronomy Update Conference 2012, Red Deer, AB, Canada, January 17-18, 2012, pp. 9.
  • Smith, E.G., O'Donovan, J.T., Henderson, W.J., Turkington, T.K., and Clayton, G.W. (2012). "Malting Barley Production: Profitability and Risk.", 2012 Annual Meeting of the Canadian Agricultural Economics Society (CAES), Niagara Falls, ON, Canada, June 17-19, 2012.

2011:

  • Blackshaw, R.E., Hao, X., Clayton, G.W., Harker, K.N., O'Donovan, J.T., Johnson, E.N., and Vera, C.L. (2011). "Canola response to polymer-coated urea versus urea in a four-year zero-tillage cropping system on the Canadian prairies.", 13th International Rapeseed Congress, Prague, Czech Republic, June 5-9, 2011, pp. 61-64.
  • Blackshaw, R.E., Harker, K.N., and O'Donovan, J.T. (2011). "Polymer-coated urea compared with urea reduces N uptake by weeds.", Canadian Weed Science Society 65th Annual Meeting, Marriott Gateway on the Falls, Niagara Falls, ON, Canada, November 21-24, 2011, pp. 65. (Poster)
  • Grant, C.A., Zebarth, B.J., Malhi, S.S., Soon, Y.K., Selles, F., Lupwayi, N.Z., O'Donovan, J.T., Harker, K.N., and Clayton, G.W. (2011). "Changes in soil ammonium and nitrate concentration over the growing season in western Canada as affected by urea or controlled release urea application.", 12th International Symposium on Soil and Plant Analysis, Mediterranean Agronomic Institute of Chania, Crete, Greece, June 6-10, 2011.
  • Harker, K.N., Brandt, S.A., O'Donovan, J.T., Blackshaw, R.E., Johnson, E.N., and Kutcher, H.R. (2011). "The Impact of Two Years of Wild Oat Management After Four Years of Low Crop Inputs in Barley and Canola.", 51st Meeting Weed Science Society of America, Hilton Portland & Executive Tower Hotel, Portland, OR, USA, February 7-10, 2011, pp. 62. (Presentation)
  • Harker, K.N., Turkington, T.K., O'Donovan, J.T., Kutcher, H.R., and Johnson, E.N. (2011). "Barley Herbicide and Fungicide Tank-Mixtures?", Canadian Weed Science Society 65th Annual Meeting, Marriott Gateway on the Falls, Niagara Falls, ON, Canada, November 21-24, 2011, pp. 46. (Abstract)
  • Harker, K.N., Turkington, T.K., O'Donovan, J.T., Kutcher, H.R., and Johnson, E.N. (2011). "Barley Herbicide and Fungicide Tank-Mixtures?", Canadian Weed Science Society 65th Annual Meeting, Marriott Gateway on the Falls, Niagara Falls, ON, Canada, November 24, 2011. (Presentation)
  • O'Donovan, J.T. and Turkington, T.K. (2011). "Effect of farming practices on malting grade barley and brewhouse performance.", Western Barley Growers Association & Master Brewers Association of the Americas Joint Conference, Deerfoot Inn & Casino, Calgary, AB, Canada, February 16-18, 2011.
  • O'Donovan, J.T., Blackshaw, R.E., Grant, C.A., Harker, K.N., Lafond, G.P., Johnson, E.N., Gan, Y.T., May, W.E., Turkington, T.K., and Lupwayi, N.Z. (2011). "Legume Crops to Improve Soil Fertility for Enhanced Canola Production.", 2011 ASA-CSSA-SSSA International Annual Meeting: Fundamental for life: soil, crop and environmental sciences, San Antonio, TX, USA, October 16-19, 2011. (Poster)
  • O'Donovan, J.T., Harker, K.N., and Blackshaw, R.E. (2011). "Implications of sub-economic threshold wild oat densities in a cereal/field pea rotation under no-till.", Canadian Weed Science Society 65th Annual Meeting, Marriott Gateway on the Falls, Niagara Falls, ON, Canada, November 21-24, 2011, pp. 46. (Abstract)
  • Turkington, T.K. and O'Donovan, J.T. (2011). "Malt Barley Research Update: The impact of harvest management and seed source", Alberta Barley Commission, Rahr Malting, Inc. and Canadian Wheat Board meeting, Alberta Barley Commission Office, Calgary, AB, Canada, April 19, 2011. (Presentation)
  • Turkington, T.K., Kutcher, H.R., Xi, K., Harker, K.N., O'Donovan, J.T., and Johnson, E.N. (2011). "The impact of fungicide and herbicide timing on barley leaf disease severity, weed management and crop productivity.", Phytopathology, 101(6), pp. S180. (Abstract)

2010:

  • Benke, M.B., Hao, X., O'Donovan, J.T., Clayton, G.W., Lupwayi, N.Z., Caffyn, P.R., and Hall, M. (2010). "Livestock manure improves acid soil productivity under cold northern Alberta climate.", 47th Annual Alberta Soil Science Workshop, Lethbridge, AB, Canada, February 16-18, 2010, pp. 27. (Workshop)
  • Blackshaw, R.E., Brandt, S.A., Johnson, E.N., Harker, K.N., O'Donovan, J.T., Turkington, T.K., and Kutcher, H.R. (2010). "Which crop inputs have the greatest impact on canola yield?", 2010 ASA-CSSA-SSSA International Annual Meeting, Long Beach Convention Center, Long Beach, CA, USA, October 31-November 4, 2010. (Abstract)
  • Blackshaw, R.E., Harker, K.N., O'Donovan, J.T., Johnson, E.N., Kutcher, H.R., and Hao, X. (2010). "ESN effects on canola establishment, weed competition and canola yield in a four-year study.", 2010 ASA-CSSA-SSSA International Annual Meeting, Long Beach Convention Center, Long Beach, CA, USA, October 31-November 4, 2010.
  • Hao, X., Li, C.L., Blackshaw, R.E., Harker, K.N., O'Donovan, J.T., and Clayton, G.W. (2010). "Nitrous oxide emissions from canola fields with ESN fertilizer application.", 2010 ASA-CSSA-SSSA International Annual Meeting, Long Beach Convention Center, Long Beach, CA, USA, October 31-November 4, 2010.
  • Hao, X., Li, C.L., Blackshaw, R.E., Harker, K.N., O'Donovan, J.T., and Clayton, G.W. (2010). "Response of residual soil available N level to polymer-coated urea (ESN) application in a canola-barley cropping system.", 2010 ASA-CSSA-SSSA International Annual Meeting, Long Beach Convention Center, Long Beach, CA, USA, October 31-November 4, 2010.
  • Li, C.L., Hao, X., Blackshaw, R.E., Harker, K.N., O'Donovan, J.T., and Clayton, G.W. (2010). "Nitrous oxide emissions from an acid soil in response to polymer-coated urea application and herbicide management in a canola-barley cropping system.", 2010 Joint Conference of the Canadian Society of Soil Science (CSSS) and the Canadian Society of Agronomy (CSA): Transfers & Transformations: Our Evolving Biosphere, University of Saskatchewan, Saskatoon, SK, Canada, June 20-24, 2010, pp. 120.
  • Li, C.L., Hao, X., Harker, K.N., Blackshaw, R.E., Clayton, G.W., and O'Donovan, J.T. (2010). "Nitrous oxide emissions from a Black Chernozem soil in response to polymer-coated urea application and herbicide management in a canola-barley cropping system.", 47th Annual Alberta Soil Science Workshop, Lethbridge, AB, Canada, February 16-18, 2010, pp. 21. (Workshop)

2009:

  • Brandt, S.A., Harker, N., O'Donovan, J.T., Kutcher, H.R., Clayton, G.W., Lupwayi, N.Z., Turkington, T.K., Kapiniak, A., and Johnson, E.N. (2009). "The role of inputs in a canola-barley rotation: results of a 4-year study.", - 2008 Canola Trials: Studies conducted under the AAFC-Prairie Canola Agronomic Research (PCAR) Agreement, Agriculture and Agri-Food Canada (AAFC)/Agriculture et Agroalimentaire Canada (AAC), pp. 91-142.
  • Harker, K.N., Blackshaw, R.E., Beckie, H.J., and O'Donovan, J.T. (2009). "Weed invasions in western Canada cropping systems.", in Inderjit, S. (ed.) - Management of Invasive Weeds. Series: Invading Nature - Springer Series in Invasion Ecology, Vol. 5, Springer, pp. 151-156, Volume 5.
  • Harker, K.N., Brandt, S.A., Johnson, E.N., O'Donovan, J.T., Blackshaw, R.E., Turkington, T.K., and Kutcher, H.R. (2009). "Input reduction impacts on weeds and crops in barley (Hordeum vulgare) and canola (Brassica napus).", 49th Annual Meeting of the Weed Science Society of America (WSSA), Hilton in the Walt Disney World Resort, Orlando, FL, USA, February 9-13, 2009, Abstract #507, pp. 1. (Abstract)
  • Harker, K.N., Brandt, S.A., O'Donovan, J.T., Blackshaw, R.E., Johnson, E.N., Turkington, T.K., Kutcher, H.R., and Clayton, G.W. (2009). "Wild oat populations after four years in a low-input barley-canola rotation.", Canadian Weed Science Society 63rd Annual Meeting, Delta Prince Edward, Charlottetown, PEI, Canada, November 24-26, 2009.
  • Li, C., Hao, X., Clayton, G.W., Blackshaw, R.E., O'Donovan, J.T., and Harker, N. (2009). "Nitrous oxide emissions in response to polymer-coated urea fertilizer application and herbicide management in canola-barley crop production.", Joint Annual Meeting of the CSA-CSSS-CSAFM: Sciences for Sustainability: Soils, Agronomy, and Atmosphere, University of Guelph, Guelph, ON, Canada, August 5-7, 2009, pp. 1. (Poster)
  • Li, C.L., Hao, X., Clayton, G.W., Blackshaw, R.E., O'Donovan, J.T., and Harker, K.N. (2009). "Nitrous oxide emissions in response to polymer-coated urea fertilizer application and herbicide management in a canola-barley crop system.", Joint Annual Meeting of the CSA-CSSS-CSAFM: Sciences for Sustainability: Soils, Agronomy, and Atmosphere, University of Guelph, Guelph, ON, Canada, August 5-7, 2009, pp. 56-57.
  • O'Donovan, J.T., Harker, K.N., Blackshaw, R.E., and Stougaard, R.N. (2009). "Crop production impacts of below-label herbicide rates.", 49th Annual Meeting of the Weed Science Society of America (WSSA), Hilton in the Walt Disney World Resort, Orlando, FL, USA, February 9-13, 2009, Abstract #298, pp. 1. (Abstract)