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.
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).
Glume browning occurs in wheat, spelt and triticale.
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.
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.