Photo 1. Brown to grey area of infection covering the entire lower stem and girdling the plant caused by charcoal rot, Macrophomina phaselina. Tiny black dots are the sclerotia.
Bean charcoal rot, ashy stem blight, damping-off, bean blight
Macrophomina phaseolina. Previosuly known as Macrophoma phaseoli, Macrophoma phaseolina, Macrophomina phaseoli, Rhizoctonia bataticola, Sclerotium bataticola.
AUTHORS Grahame Jackson & Eric McKenzie
Information from Charcoal rot of bean/tobacco (Macrophomina phaseolina). Plantwise Knowledge Bank. (http://www.plantwise.org/KnowledgeBank/Datasheet.aspx?dsID=32134); and from Diseases of vegetable crops in Australia (2010). Editors, Denis Persley, Tony Cooke, Susan House. CSIRO Publishing. Photo 1 David B. Langston, University of Georgia, Bugwood.org. Photo 2 Clemson University, USDA Cooperative Extension Slide Series, Bugwood.org. Photo 3 Paul Bachi, University of Kentucky research and Education Center, 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.
This mini fact sheet is a part of the app Pacific Pests and Pathogens
The mobile application is available from the Google Play Store and Apple iTunes.