Importance
Clubroot can be a reoccurring problem for years because it is easily spread from plant to plant. P. brassicae is able to infect 300 species of cruciferous plants, making this disease a recurring problem even with crop rotation. This wide host range allows the pathogen to continue its infection cycle in the absence of cabbages. Additionally, Cabbage clubroot may be a stubborn disease due to its ability to form a microbial cyst as an overwintering structure. These cysts may last many years in the soil until it comes into contact with a suitable host, making it difficult to entirely avoid the introduction of the disease. Those growing cabbage need to be aware of the possibility of Plasmodiophora infestation by simply growing in particular fields that may have had Cabbage clubroot previously.
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