About the pest

  • Puccinia graminis f. sp. tritici (pathotype Ug99)
  • Pathotype identified in Uganda in 1999 that has overcome several stem rust resistance genes
  • Many Australian wheat varieties will be susceptible
  • Elliptical blisters produced on stems, which break open to reveal a mass of rust coloured spores
  • Stem rust on known resistant varieties should be reported

More information

Ug99 (Department of Agriculture)

Stem rust of wheat (Plant Health Australia)