Photo 1. Top and underside of a cowpea leaf showing the large reddish brown spots Pseudocercospora cruenta, mostly restricted by the veins.
Photo 2. As the spots caused by Pseudocercospora cruenta enlarge and merge, the leaves yellow and die.
Cowpea Cercospora leaf spot
Pseudocercospora cruenta. Previous names are Cercospora cruenta and Mycosphaerella cruenta (the sexual state). Note that some taxonomists consider that this fungus is the same as Cercospora canescens (see Fact sheet no. 301).
AUTHORS Grahame Jackson & Eric McKenzie
Information from Cercospera leaf spot of cowpea Mycosphaerella cruenta. Africa Soil Health Consortium. Plantwise. (http://africasoilhealth.cabi.org/wpcms/wp-content/uploads/2015/02/38-legumes-cercospora-leaf-spot.pdf). Photos 1&3 Howard F. Schwartz, Colorado State University, Bugwood.or. Photo 2 (taken by Eric McKenzie), and used in this fact sheet, appeared previously in McKenzie E (2013) Pseudocercospora cruenta PaDIL - (http://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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