False black chaff

False black chaff


  • A condition associated with the presence of d rust resistance gene in some wheat varieties


  • A uniform spread acrosss the paddock of brown/black stems and heads
  • Colouration ranges from slight lines through to large areas covering most of the glume
  • Brown-black discolouration of the stem below the head in severe cases


  • Yield penalty unknown


There is no control as it is a physiological reaction, not a disease.





Links and Resources

DAFWA - False black chaff

Cause, symptoms, and other diseases that cause the same symptoms.

Sydney University - False Black Chaff in Wheats Carrying the Stem Rust Resistance Gene Sr2

Introduction, explanation of the disease, varieties carrying the disease, and alternative causes. Published 2008.