Profile Damage symptoms Host plants Distribution Propagation and transmission Economic importance Prevention and control Services to overview

Stagonospora nodorum blotch

Parastagonospora nodorum

Profile

Glume blight is caused by a fungus. Septoria infestation leads to poor field emergence, as well as greatly reduced winter hardiness. Further consequences are yield losses and poor grain formation.

Damage symptoms

After ear emergence, brown-purple discolorations can be observed on the glumes. In some cases, dark spore containers (pycnidia) are also visible later. The fungus grows through the glumes and colonizes the grains (Septoria seed contamination).

Eine mit Spelzenbräune befallene Weizenähre. Die Ähre weist braun-violette Verfärbungen auf. (Enlarges Image in Dialog Window)
Mit Spelzenbräune befallene Weizenähre
Ein Weizenkeimling, der mit Septoria befallen ist (Enlarges Image in Dialog Window)
Ein mit Septoria befallener Keimling

Host plants

Glume browning occurs in wheat, spelt and triticale.

Distribution

Tegument browning occurs more frequently, especially in years and locations with high precipitation.

Propagation and transmission

The fungus that causes tegument browning is both seed-borne and soil-borne, meaning it can be transmitted through the seeds as well as the soil.

Economic importance

Septoria infestation leads to poor field emergence, as well as greatly reduced winter hardiness. Further consequences are yield losses, poor grain formation and seed contamination.

Prevention and control

  • The use of tested and healthy seed is recommended.
  • Seeds should be propagated in climatically favorable areas.
  • A regulated crop rotation should be followed.
  • Storage of stocks is unfavorable and should be avoided if possible.
  • If necessary, seed dressing should be carried out.

Services

Plant Health Services

Last updated: 13.03.2024

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