Photo 1. Several patches of black rot, caused by the bacterium, Xanthomona campestris pv. campestris, at the margin of the older leaves.
Photo 2. Close-up of the V-shaped region at the edge of the cabbage leaf caused by the black rot bacterium, Xanthomonas campestris pv. campestris. Note the blackened veins.
Photo 3. Multiple infections at the margins of cabbage leaves by the black rot bacterium, Xanthomonas campestris pv. campestris.
Brassica black rot, black rot of cabbage
Xanthomonas campestris pv. campestris
AUTHOR Grahame Jackson
Information (and Photos 1&4) is from Diseases of vegetable crops in Australia (2010). Editors, Denis Persley, Tony Cooke, Susan House. CSIRO Publishing. Photo 2 David B. Langston, University of Georgia, Bugwood.org.
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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