- Narrow distribution. Malaysia, Oceania. On banana and plantains.
- Spots mostly on older leaves, diamond shape (Fiji, Samoa), round or oval (PNG, Malaysia), light grey with dark borders, and dark spore masses on underside. In Papua New Guinea and Malaysia, spots may merge destroying large parts of the leaves.
- Usually, a minor disease, worse where bananas grown in wet, cool (24°C) areas, under shade or sprayed with oil against other diseases.
- Cultural control: remove shade if disease persists.
- Chemical control: if needed, use mancozeb, triazoles or strobilurins (see notes Fact Sheet no. 2).
Pacific Pests, Pathogens, Weeds & Pesticides
Banana Malayan leaf spot (122)
Banana Malayan leaf spot
AUTHOR Grahame Jackson
Information from (including Photo 1) Gerlach WWP (1988) Plant diseases of Western Samoa. Samoan German Crop Protection Project, Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) Gmbh, Germany; and from Ploetz RC (Ed.) Diseases of tropical fruit crops. CABI Publishing. (https://books.google.com.au/books?id=tgl_-tu6rpgC&pg=PA92&lpg=PA92&dq=Haplobasidium+musae&source=bl&ots=AjAy4tgZEs&sig=ACfU3U3zP7zUmSn5fLTCWW5u6U3QABBdrQ&hl=en&sa=X&ved=2ahUKEwifteuD8ZLvAhWqqksFHYk_BcYQ6AEwDXoECA8QAw#v=onepage&q=Haplobasidium%20musae&f=false).
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.