White leaf spot (Brassica)

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White leaf spot (Brassica)
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A turnip leaf showing signs of white leaf spot (Cercospora brassicicola)
Scientific Classification
Kingdom: Fungi
Division: Ascomycota
Family: Mycosphaerellaceae
Genus: Cercospora
Species: Cercospora brassicicola
Cercospora leaf spot
Leaf spot

White leaf spot is a disease caused by the fungal pathogen Cercospora brassicicola. The fungus thrives in warm, humid conditions. It is often caused by diseased seeds or planting materials and promoted by poor air flow, low sunlight, overcrowding, improper soil nutrient and irrigation management and poor soil drainage.[1]

Symptoms[edit | edit source]

Initial infection appears as tan or light brown spots. Spots soon coalesce and may drop out. Could be confused with spray burn.[2]

Treatment[edit | edit source]

Remove and destroy infected plants.

Prevention[edit | edit source]

Practice crop rotation. Use diseased-free seeds or use resistant cultivars. Observe proper planting distances and maintain sanitation by removing a disposing of infected plant materials. Avoid working when plants are wet.[1]

Examples[edit | edit source]

References[edit | edit source]


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