Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Bean Phaseolus rust (217)

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  • Worldwide distribution. On Phaseolus species. Usually, a major disease depending on variety.
  • Circular pustules, 1-2 mm, light green at first on both leaf surfaces, with halos on the top. Bursting to produce reddish-brown spores.
  • Spread is by spores in the wind.
  • Cultural control: plant beans with maize, at random, not in rows; use a 2-year crop rotation; do not plant overlapping crops; resistant varieties; collect and burn trash after harvest.
  • Chemical control: use mancozeb, starting when the spots are first seen.
Common Name

Bean rust (Phaseolus species).

Scientific Name

Uromyces appendiculatus var. appendiculatus. Previously Uromyces phaseoli.

AUTHOR Grahame Jackson
Information from Diseases of vegetable crops in Australia (2010). Editors, Denis Persley, et al. CSIRO Publishing; and Liberato JR,  Sartorato A (2005) Bean Leaf Rust (Uromyces appendiculatus var. appendiculatus ): PaDIL -; and CABI (2019) Uromyces appendiculatus (bean rust). Crop Protection Compendium. (; 1McKenzie E, Jackson G (1986) The fungi, bacteria and pathogenic algae of Solomon Islands. Field Document 11, RAS/83/001. Food and Agriculture Organization of the United Nations in association with the South Pacific Commission. Photo 1 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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