Evaluating Physical and Chemical Methods for Cleaning and Disinfecting Tools, Machinery, Equipment and Other Hard Surfaces Contaminated with Clubroot

Researcher: Ron Howard, D. Burke, S. Lisowski and C. Pugh, CDC South, Alberta Agriculture and Forestry, Brooks AB

Project Code: CARP 2009-18

Final Report: December 2012

Summary: Clubroot in canola is a destructive soilborne disease that spreads mainly via
contaminated soil carried from field to field by equipment. This project evaluated the
efficacy of various disinfectants and thermal treatments against the long-lived resting
spores of the clubroot pathogen P. brassicae under laboratory, greenhouse conditions
and commercial fields. The results showed that cleaning, pressure washing and
disinfection of farm and industrial equipment was effective at limiting the spread of the
clubroot pathogen. Improved sanitation is a rapid and cost-effective strategy to manage
the spread of clubroot in canola and can be broadly applied by the agricultural, oil and
gas and construction industries.

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