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Species Lactuca sativa
Crop Lettuce
Pest Scientific Name Bremia lactucae
Additional Info
Complementary Info
Type Fungus
Pest Classification Is seed a pathway in this crop? Pathway not proven
Main literature references 6-9, 6-16, 6-46, 6-53
Remarks B. lactuca is the causal agent of downy mildew of lettuce. Sources suggest that seed can be a pathway, however, no references found with data to support seed as a pathway. Lettuce seed lots are usually produced in dry climates, unfavorable to the development of Bremia. A quality systems approach in production of the seeds by crop inspections should reduce the chances of seed contamination.
Detection Is there a seed test? No
If yes, type of test
Main literature references
Remarks No references found indicating a seed test exists for B. lactucae on lettuce.
Risk mitigation Can the pest be managed by seed treatment(s)? Yes
If yes, what type(s) Chemical (seed coating)
Main literature references 6-20
Remarks Seed treatment with fungicides is effective against the fungus.

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