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False black chaff

False black chaff

Description

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

Symptoms

  • 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

Damage

  • Yield penalty unknown

Control

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.