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Cabbage light leaf spot (302) Print Fact Sheet

Common Name

Cabbage light leaf spot, frog-eye leaf spot

Scientific Name

Cercospora brassicicola


Worldwide. In tropical and sub-tropical countries. It is recorded from Australia, Niue, Papua New Guinea, Solomon Islands, and Vanuatu.


Plants in the cabbage family (Brassicaeae), particularly, Chinese cabbage, cauliflower, turnip, mustard, and to a lesser extent cabbage.

Symptoms & Life Cycle

Leaf spots round to angular, up to 8 mm diameter, pale brown or white with a dark brown margin (Photos 1&2).

Spread is in rain and wind, and survival is in trash, on volunteer plants, weeds and seed. In general, it is a disease favoured by wet conditions, and cool temperatures, less than 20°C.


Although a common disease, its impact is low as it is mainly a disease of mature leaves. Only occasionally does defoliation occurs.

Detection & Inspection

Look for the round to angular, pale brown, gray or white spots, with a dark border, less than 1 cm across.



Before planting:

During growth:

After harvest:


AUTHORS Grahame Jackson & Eric McKenzie 
Information from Smith S (2012) Diseases of turnip and mustard greens, Division of Agriculture, Research & Extension, University of Arkansas System. ( Photo 1 Clemson - USDA Cooperative Extension Slide Series, Photo 2 David B. Langston, University of Georgia,

Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.

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