Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Peanut rust (034)

Click/tap on images to enlarge
  • Worldwide distribution. On peanuts, and other plants belonging to the genus Arachis. An important disease.
  • Rust infects all parts of peanuts above ground: the red-brown spots produce masses of spores. Losses in pod yields of 40%.
  • Spores spread in wind; infection needs water on plant surfaces, and high humidity.
  • Cultural control: avoid planting next to old crops; leave at least 4 weeks between crops – rusts do not survive in plant debris or the soil; remove “volunteers”; inspect twice weekly; tolerant varieties.
  • Chemical control: begin to spray as soon as spots are seen and no later than 30-35 days; use chlorothalonil (also effective against leaf spots) at 10-14 days until 14 days before harvest.
Common Name

Peanut rust

Scientific Name

Puccinia arachidis

AUTHORS Helen Tsatsia & Grahame Jackson
Information from DAF (2018) Rust. Queensland Government. (; and CABI (undated) Ground leaf rust Puccinia arachidis. Plantwise Knowledge Bank. (; and from Korus KA, Dufault N (undated) Peanut rust fungus: Puccina arachidis Speg. UF/IFAS Extension ( Photo 4 McKenzie E (2013) Puccinia arachidis PaDIL - ( 

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.

Copyright © 2022. All rights reserved.