Pacific Pests, Pathogens, Weeds & Pesticides - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Kauri rust (236)

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Photo 1. Raised spots or galls of kauri rust showing pustules (aecia) of Aecidium fragiforme.

Photo 1. Close-up of raised spot or galls of kauri rust, Aecidium fragiforme, containing aecia.

Summary

  • Narrow distribution. Southeast Asia, Oceania. On kauri only. A minor disease.
  • Raised galls form, up to 20 mm diameter and 5 mm high. Within them are white to yellow pustules that produce spores. The underside of the pustules are often depressed.
  • Spread occurs as the spores are blown by wind.
  • Cultural control: none recommended.
  • Chemical control: none recommended.

Common Name

Kauri rust

Scientific Name

Aecidium fragiforme. There are two rusts known on Agathis, Aecidium fragiforme and Aecidium balansae. The latter occurs in New caledonia.

AUTHOR Grahame Jackson
Information from McKenzie E (2013) Aecidium fragiforme: PaDIL - http://www.padil.gov.au; and from Rust fungi of Australia. (https://collections.daff.qld.gov.au/web/key/rustfungi/Media/Html/aecidiumfragiforme.html). Photos 1&2 Kohler F, et al. (1997) Diseases of cultivated crops in Pacific Island countries. South Pacific Commission. Pirie Printers Pty Limited, Canberra, Australia.

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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