- Worldwide distribution (probably). On mango. Lack of information on importance; often with the more serious anthracnose (see Fact Sheet no.09).
- Spots may merge in wet weather forming large black areas causing leaf fall.
- Leaf spots, angular to circular, up to 6 mm diameter, with small dark centres and wide greenish halos. Dark underside where spores form.
- Spread in wind and rain.
- Cultural control: Similar to anthracnose: prune canopy allowing air movement so that leaves dry quickly, and keep height <4 m; if practical, remove dead shoots, and collect fallen leaves, and burn.
- Chemical control: if required, use products as for anthracnose, e.g., copper or mancozeb, beginning when flowers first appear, continuing until the pre-harvest waiting period.
Pacific Pests, Pathogens, Weeds & Pesticides
Mango angular leaf spot (325)
Photo 1. Small black spots with characteristic halos on the upper surface of mango leaves, caused by angular leaf spot, Scolecostigmina mangiferae.
Angular leaf spot, mango leaf spot.
Scolecostigmina mangiferae; previously known as Cercospora mangiferae and Stigmina mangiferae. Different from but easily confused with anthracnose, Glomerella cingulata (see Fact Sheet no. 09).
AUTHORS Grahame Jackson & Eric McKenzie
Photo 1 Fred Brooks, University of Hawaii at Manoa, Bugwood.org; Photos 1&2 (taken by Eric McKenzie), and used in this fact sheet, appeared previously in McKenzie E (2013) Scolecostigmina mangiferae: 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.