- Widespread distribution. On capsicum and chilli, and other kinds of vegetables (e.g., tomato), root crops (e.g. yam), and fruit trees (e.g., papaya, mango). There are three common species on capsicum with similar symptoms. An important disease.
- Fungal spots mostly occur on fruits about to ripen. Sunken yellow spots, darkening in wet weather with pink spore masses in rings; later, turning black.
- Spread is in wind-driven rain, and water splash; survival is in crop debris, weeds, 'volunteers', seed, other crops.
- Cultural control: treat seed in hot water at 52ºC for 30 mins; remove seedlings in nursery with spots; weed; plough in or collect and burn plant debris after harvest; 3-year crop rotation, avoiding related crops; tolerant varieties.
- Chemical control: use sprays of copper or mancozeb, from time of flowering.
Pacific Pests, Pathogens, Weeds & Pesticides
Capsicum (chilli) anthracnose (177)
Photo 1. Large spots on capsicum caused by Colletotrichum species. Note the rings inside the spot giving it a 'target-like' appearance. The tiny whitish dots in the spot are the spore masses of the fungus.
Colletotrichum species, most often Colletotrichum acutatum, Colletotrichum capsici (possibly the same as Colletotrichum dematium) and Colletotrichum gloeosporioides (the sexual state is Glomerella cingulata).
AUTHORS Zhong-Ming Sheu, Jaw-Fen Wang & Grahame Jackson
Information from Diseases of fruit crops in Australia (2009). Editors, Tony Cooke, et al. CSIRO Publishing; and from Eric McKenzie (2013) Colletotrichum acutatum (Photo 8), Colletotrichum capsici (Photos 9&10) and Colletotrichum gloeosporioides (Photo 11): PaDIL - (http://www.padil.gov.au). Photos 1&2 Mani Mua, SPC, Sigatoka Research Station, Fiji. Photos 3-5 AVRDC, The World Vegetable Centre. Photos 6 Than PP, et al. (2008) Chilli anthracnose disease caused by Colletotrichum species. J Zhejiang Univ Sci B. 9(10): 764Ð778. Photo 8 Colletotrichum acutatum, Photos 9&10 Colletotrichum capsici,
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.