Identification of wheat rust

  • Leaf rust is caused by the fungus.
  • The first signs of the disease (sporulation) occur 10-14 days after infection
  • Leaf rust produces reddish-orange colored spores that occur in small, 1.5 mm, circular to oval-shaped pustules.
  • These are found on the top surface of the leaves, distinguishing leaf rust from stem rust which is found on both surfaces of the leaf.
  • The spores require 15 to 20ÂșC temperature and free moisture (dew/rain/irrigation) on the leaves to successfully infect wheat.
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