Photo 2. Ascochyta spots on bean leaves, Boeremia exigua. The spot on the left shows concentric rings and a dark margin.
Photo 3. Leaf spots of Ascochyta spot, Boeremia exigua, on common bean. The leaf on the right shows spots with ring patterns.
Boeremia exigua; previously known as Ascochyta phaseolorum, and Phoma exigua, and many other names. The name now given to the fungus is Boeremia exigua var. exigua.
AUTHORS Grahame Jackson & Eric McKenzie
Information (and Photos 2&5) Diseases of vegetable crops in Australia (2010). Editors, Denis Persley, Tony Cooke, Susan House. CSIRO Publishing; and from CABI (2016) Boeremia exigua var. exigua (leaf spot) Crop Protection Compendium. (www.cabi.org/cpc). Photo 1 R.J. Reynolds Tobacco Company Slide Set R.J. Reynolds Tobacco Company, Bugwood.org. Photo 3 Howard F. Schwartz Colardo State University, Bugwood.org. Photo 4 (taken by Eric McKenzie), and used in this fact sheet, appeared previously in McKenzie E (2013) Boeremia exigua PaDIL - (https://www.padil.gov.au).
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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