Diverse crop rotations reduce soil-borne disease pressure

November 13, 2015

KEY PRACTICE: Following a diverse rotation reduces soil pathogen populations and  disease pressure. However, crop rotation should only be one part of your integrated approach to disease management.

PROJECT TITLE, LEAD RESEARCHER: “Effect of crop rotation on canola seedling
blight and soil pathogen population dynamics,” 2006-07, Sheau-Fang Hwang, Alberta Agriculture and Forestry


Long-term crop rotations have been used as a standard practice to reduce disease pressure in field crops. However, current market opportunities and cultivar advancements have resulted in a trend toward tighter rotations. This study determined that this shift in production practices increases soil pathogen populations, and may result in poor seedling establishment and losses to seedling blight and damping off of canola.

Led by Sheau-Fang Hwang of Alberta Agriculture and Forestry’s Crop Diversification Centre North, field experiments were established in Scott and Melfort, SK to determine the impact of long-term crop rotations on soil pathogen populations and on the growth parameters of canola.

Open the PDF to read the entire research summary from the 2015 Science Issue of Canola Digest

You can also read the 2015 Science Issue of Canola Digest as a flipbook

Visit the Canola Research Hub website to search the database of grower funded research


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