Pacific Pests, Pathogens & Weeds - Mini Fact Sheet EditionPapaya black spot (158)
Pacific Pests, Pathogens & Weeds - Mini Fact Sheet EditionPapaya black spot (158)
Summary
- Worldwide distribution. On papaya. Usually, a minor disease.
- Spots, round to irregular, 3-6 mm on older leaves, pale brown above with yellow margin; dark below as spores form. Dark spots on fruit, slightly sunken.
- Heavy spotting causes leaves and young fruit to fall, reducing yields and sales of fruits.
- Cultural control: remove infected leaves, and burn.
- Chemical control: use (i) copper, chlorothalonil or mancozeb (protectants), or (ii) tubuconazole (systemic), ensuring coverage of underside of the leaves. Alternate the two types of fungicides.
Common Name
Black spot
Scientific Name
Asperisporium caricae; previously Cercospora caricae.
AUTHOR Grahame Jackson
Information from Diseases of fruit crops in Australia (2009). Editors, Tony Cooke, Denis Persley, Susan House. CSIRO Publishing; and from CABI (2013) Asperisporium caricae (black spot). Crop Protection Compendium. (https://www.cabi.org.cpc/); and from Liberato JR, McTaggart AR, Shivas RG (2006) Asperisporium Black Spot of Papaya (Asperisporium caricae). 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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