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

Leaf stripe of barley

Pyrenophora graminea

Profile

Barley streak disease is caused by the fungus Pyrenophora graminea . The infestation leads to striation of the leaves, reduced growth of the plant and only sporadic ear formation. It occurs in all growing locations and can lead to considerable yield losses due to its rapid spread potential.

Damage symptoms

braune Streifen auf den Blättern einer Gerstenpflanze im Bestand
Streifenförmige Nekrosen auf den Blättern einer Gerstenpflanze

The fungus forms grayish-brown to reddish-brown stripes on affected plants, extending from the leaf base to the leaf tip. With increasing maturity, the leaves tear open at the stripes. Plants exhibit stunted growth and sporadic spike formation occurs, with the spikes being numb and containing no fruit. Barley streak disease is clearly visible from shooting (early growth), better from ear pushing.

Host plants

Barley

Distribution

The causal agent of stripe disease, Pyrenophora graminea, occurs in all barley growing locations.

Propagation and transmission

The pathogen of stripe disease is exclusively seed-borne, which prevents it from spreading further in the stand. However, infected plants infect the flowers and thus the grain plants of other plants in the stand and also in neighboring stands.

Economic importance

Due to its rapid spread potential, barley streak disease can thus lead to significant yield losses.

Prevention and control

  • Use of tested and healthy seeds
  • Application of a special dressing against the stripe disease Pyrenophora graminea (normal dressing not effective).

Services

Plant Health Services

Last updated: 13.03.2024

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