Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Papaya brown spot (300)

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  • Worldwide distribution. On cucumber and tomato as the cause of a major disease; a minor disease on many others. On papaya, occasional loss of fruit yield and quality.
  • Spots, angular, brown, 2 mm with yellow halos and white centres that often fall out. Best seen from below. May become larger and merge in wet weather. Spread is by spores in wind and rain.
  • Cultural control: none recommended for papaya, but it is recommended not to plant tomato or cucumber near papaya with brown leaf spot.
  • Chemical control: chlorothalonil, mancozeb, or copper. Note, tebuconazole is used for black spot.
Common Name

Papaya brown spot, papaya shot-hole, Corynespora leaf spot

Scientific Name

Corynespora cassiicola

AUTHOR Grahame Jackson 
Information from Diseases of fruit crops in Australia  (2009). Editors, Tony Cooke, et al. CSIRO Publishing. Photo 2 Mike Furlong, University of Queensland, Brisbane; and from Liberato JR, McTaggart AR (2006) Corynespora Brown Spot of Papaya (Corynespora cassiicola): PaDIL - Photo 3 Gerald Holmes, California Polytechnic State University at San Luis Obispo,

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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