The Sustainability of Organic Grain Production on the Canadian Prairies—A Review

Demand for organically produced food products is increasing rapidly in North America, driven by a perception that organic agriculture results in fewer negative environmental impacts and yields greater benefits for human health than conventional systems. Despite the increasing interest in organic grain production on the Canadian Prairies, a number of challenges remain to be addressed to ensure its long-term sustainability. In this review, we summarize Western Canadian research into organic crop production and evaluate its agronomic, environmental, and economic sustainability.

[1]  M. Turmel,et al.  The influence of crop rotation on the mineral nutrient content of organic vs. conventionally produced wheat grain: Preliminary results from a long-term field study , 2009 .

[2]  D. Murphy,et al.  Soil Biological Fertility: A Key to Sustainable Land Use in Agriculture , 2003 .

[3]  Influence of alternative management methods on the economics of flax production in the Black Soil Zone , 2009 .

[4]  B. McConkey,et al.  Energy use and efficiency in two Canadian organic and conventional crop production systems , 2006, Renewable Agriculture and Food Systems.

[5]  J. Moyer,et al.  Combining agronomic practices and herbicides improves weed management in wheat–canola rotations within zero-tillage production systems , 2005, Weed Science.

[6]  J. Prescott,et al.  A Comparison of the Nutritional Value, Sensory Qualities, and Food Safety of Organically and Conventionally Produced Foods , 2002, Critical reviews in food science and nutrition.

[7]  M. Tenuta,et al.  Influence of organic management with different crop rotations on selected productivity parameters in a long-term Canadian field study. , 2005 .

[8]  P. Baret,et al.  How Agricultural Research Systems Shape a Technological Regime that Develops Genetic Engineering but Locks Out Agroecological Innovations , 2009 .

[9]  D. Spaner,et al.  Agrobiodiversity: Its Value, Measurement, and Conservation in the Context of Sustainable Agriculture , 2007 .

[10]  J. Teasdale,et al.  Potential long-term benefits of no-tillage and organic cropping systems for grain production and soil improvement , 2007 .

[11]  H. Beckie,et al.  Ongoing Development of Integrated Weed Management Systems on the Canadian Prairies , 2008, Weed Science.

[12]  F. Larney,et al.  Managing the Soil Habitat for Enhanced Biological Fertility , 2007 .

[13]  L. Goonewardene,et al.  Competitive traits and the stability of wheat cultivars in differing natural weed environments on the northern Canadian Prairies , 2007, The Journal of Agricultural Science.

[14]  Klaus Ammann,et al.  Why farming with high tech methods should integrate elements of organic agriculture. , 2009, New biotechnology.

[15]  L. Drinkwater,et al.  Effect of compost addition and crop rotation point upon VAM fungi , 1997 .

[16]  Martin H. Entz,et al.  Reconsidering Integrated Crop-Livestock Systems in North America , 2007 .

[17]  A. Macey.  Retail Sales of Certified Organic Food Products, in Canada, in 2006 , 2007 .

[18]  R. Blackshaw.  Tillage intensity affects weed communities in agroecosystems , 2005 .

[19]  M. Tenuta,et al.  High yielding organic crop management decreases plant-available but not recalcitrant soil phosphorus. , 2009 .

[20]  W. Wismer,et al.  Sensory profiles of bread made from paired samples of organic and conventionally grown wheat grain. , 2007, Journal of food science.

[21]  J. O'donovan,et al.  The Weed-Competitive Ability of Canada Western Red Spring Wheat Cultivars Grown under Organic Management , 2007 .

[22]  H. Beckie,et al.  Economic benefits of integrated weed management systems for field crops in the Dark Brown and Black soil zones of western Canada , 2006 .

[23]  J. O'donovan,et al.  Does growing Canadian Western Hard Red Spring wheat under organic management alter its breadmaking quality? , 2007, Renewable Agriculture and Food Systems.

[24]  Rong-Cai Yang,et al.  Should spring wheat breeding for organically managed systems be conducted on organically managed land? , 2009, Euphytica.

[25]  D. Pimentel,et al.  Environmental, Energetic, and Economic Comparisons of Organic and Conventional Farming Systems , 2005 .

[26]  M. Entz,et al.  Agronomic benefits of alfalfa mulch applied to organically managed spring wheat , 2006 .

[27]  C. Hamel,et al.  Arbuscular mycorrhizal fungi in field crop production: Potential and new direction , 2006 .

[28]  M. Entz,et al.  Crop yield and soil nutrient status on 14 organic farms in the eastern portion of the northern Great Plains , 2001 .

[29]  N. Pelletier,et al.  Scenario Modeling Potential Eco-Efficiency Gains from a Transition to Organic Agriculture: Life Cycle Perspectives on Canadian Canola, Corn, Soy, and Wheat Production , 2008, Environmental management.

[30]  Robert E. Blackshaw,et al.  Yellow sweetclover, green manure, and its residues effectively suppress weeds during fallow , 2001, Weed Science.

[31]  R. Lemke,et al.  ACCUMULATION AND DISTRIBUTION OF NITRATE–NITROGEN AND EXTRACTABLE PHOSPHORUS IN THE SOIL PROFILE UNDER VARIOUS ALTERNATIVE CROPPING SYSTEMS , 2002 .

[32]  G. Clayton,et al.  Barley seeding rate influences the effects of variable herbicide rates on wild oat , 2001, Weed Science.

[33]  V. Smil,et al.  Feeding the World: A Challenge for the Twenty-First Century , 2000 .

[34]  Robert E. Blackshaw,et al.  Suitability of legume cover crop-winter wheat intercrops on the semi-arid Canadian Prairies , 2010 .

[35]  D. Lynch,et al.  Phosphorus status on Canadian organic farms , 2007 .

[36]  B. Deaton,et al.  Evaluating Consumer Preferences for Organic Food Production Standards , 2009 .

[37]  P. Gélinas,et al.  Wheat cultivars grown under organic agriculture and the bread making performance of stone-ground whole wheat flour. , 2009 .

[38]  J. Fyles,et al.  Seasonal changes of arbuscular mycorrhizal fungi as affected by tillage practices and fertilization : Hyphal density and mycorrhizal root colonization , 1997, Plant and Soil.

[39]  Orla M. Nazarko,et al.  Strategies and tactics for herbicide use reduction in field crops in Canada: A review , 2005 .

[40]  S. Shirtliffe,et al.  Optimal seeding rate for organic production of lentil in the northern Great Plains , 2009 .

[41]  Ralph C. Martin,et al.  Spring wheat yield response to variable seeding rates in organic farming systems at different fertility regimes , 2008 .

[42]  B. Larue,et al.  Consumers’ Valuation of Functional Properties of Foods: Results from a Canada‐wide Survey , 2002 .

[43]  R. Blackshaw,et al.  Profitability and risk of organic production systems in the northern Great Plains , 2004, Renewable Agriculture and Food Systems.

[44]  Organic Farming in Central Alberta: Current Trends, Production Constraints and Research Needs , 2005 .

[45]  D. Lynch.  Environmental impacts of organic agriculture: A Canadian perspective , 2009 .

[46]  R. B. Irvine,et al.  Effects of alternative management practices on the economics, energy and GHG emissions of a wheat–pea cropping system in the Canadian prairies , 2009 .

[47]  J. Moyer,et al.  Suitability of undersown sweetclover as a fallow replacement in semiarid cropping systems , 2001 .

[48]  J. O'donovan,et al.  Organic and conventional management of mixtures of wheat and spring cereals , 2008, Agronomy for Sustainable Development.

[49]  K. Murphy,et al.  Relationship among phenotypic growth traits, yield and weed suppression in spring wheat landraces and modern cultivars , 2008 .

[50]  R. Blackshaw,et al.  Variable crop plant establishment contributes to differences in competitiveness with wild oat among cereal varieties , 2005 .

[51]  R. Lemke,et al.  Effects of input level and crop diversity on soil nitrate-N, extractable P, aggregation, organic C and N, and nutrient balance in the Canadian Prairie , 2009, Nutrient Cycling in Agroecosystems.

[52]  S. Quideau,et al.  The Soil Microbial Community and Grain Micronutrient Concentration of Historical and Modern Hard Red Spring Wheat Cultivars Grown Organically and Conventionally in the Black Soil Zone of the Canadian Prairies , 2011 .

[53]  J. O'donovan,et al.  Cultivar and Seeding Rate Effects on the Competitive Ability of Spring Cereals Grown under Organic Production in Northern Canada , 2007 .

[54]  K. Bowren,et al.  Potential of forages to diversify cropping systems in the Northern Great Plains , 2002 .

[55]  R. MacRae,et al.  Economic and social impacts of organic production systems , 2007 .

[56]  S. Lyon,et al.  Evidence of varietal adaptation to organic farming systems , 2007 .

[57]  K. Ammann.  Integrated farming: why organic farmers should use transgenic crops. , 2008, New biotechnology.

[58]  G. Lafond,et al.  Long-term potential of conservation tillage on the Canadian prairies , 1996 .

[59]  Andrea Brechelt.  Effect of different organic manures on the efficiency of VA mycorrhiza , 1990 .

[60]  J. Moyer,et al.  Integrated approaches to managing weeds in spring-sown crops in western Canada , 2007 .

[61]  A. Navabi,et al.  A genetic analysis of weed competitive ability in spring wheat , 2009 .

[62]  J. O'donovan,et al.  Performance and stability of performance of spring wheat variety mixtures in organic and conventional management systems in western Canada , 2008, The Journal of Agricultural Science.

[63]  A. Nelson,et al.  Cropping Systems Management, Soil Microbial Communities, and Soil Biological Fertility , 2010 .

[64]  Robert E. Blackshaw,et al.  Seeding rate, herbicide timing and competitive hybrids contribute to integrated weed management in canola (Brassica napus) , 2003 .

[65]  M. Entz,et al.  Intercropping Spring Wheat with Cereal Grains, Legumes, and Oilseeds Fails to Improve Productivity under Organic Management , 2008 .

[66]  H. E. Mason,et al.  Competitive ability of wheat in conventional and organic management systems: A review of the literature , 2006 .

[67]  P. Boxall,et al.  Influence of health and environmental information on hedonic evaluation of organic and conventional bread. , 2008, Journal of food science.

[68]  A. Trewavas,et al.  A critical assessment of organic farming-and-food assertions with particular respect to the UK and the potential environmental benefits of no-till agriculture , 2004 .

[69]  Effect of sweetclover cultivars and management practices on following weed infestations and wheat yield , 2007 .