Barley stripe rust (Puccinia striiformis f. sp. hordei) is a fungal pest of barley, potentially affecting crops in all Australian growing regions. Barley stripe rust would have serious economic impacts following establishment in Australia, as it is estimated that approximately 60% of the barley varieties grown here would be susceptible. Damage to barley plants varies depending on the plant growth stage. Crop losses due to barley stripe rust are typically around 10%, but in susceptible varieties they may be up to 100%.
The fungus produces stripes of rust pustules between the veins of leaves, and can also form on barley heads. The pustules may be more yellow than orange, and hence the disease is sometimes referred to as yellow rust. Barley stripe rust can build up rapidly if conditions are cool and wet, and infection is often first noticed as ‘hot spots’ within the crop.
Barley grass stripe rust (present in the eastern states of Australia), and occasionally wheat stripe rust, can infect barley. However, any barley plants showing stripe rust symptoms should be sent for identification through laboratory analysis.
The development of stripe rust symptoms on any barley plants. In certain conditions ‘hot spots’ of symptoms can develop in the crop.
Rust spores are small, light and may survive for several days. They can be spread over large distances by wind and easily attach to clothing, machinery and tools, allowing movement and spread between farms and regions. They may also transfer across the world on travellers’ clothing.
Barley stripe rust occurs in Asia, Europe, Central Africa and North, Central and South America.
Check your farm frequently for the presence of new pests and unusual symptoms. Make sure you are familiar with common grain pests so you can tell if you see something different.
If you see anything unusual, call the Exotic Plant Pest Hotline on 1800 084 881.
Check your farm frequently for the presence of new pests and unusual symptoms. Make sure you are familiar with common grain pests so you can tell if you see something different.
If you see anything unusual, call the Exotic Plant Pest Hotline on 1800 084 881.