Control strategies for powdery mildew
Published: 31 Mar 2012
A combination of resistant varieties, plant health and effective fungicides are required to prevent widespread losses from powdery mildew outbreaks in barley.
Key points
- A single gene mutation in populations of the powdery mildew pathogen has caused disease control failure by some triazole fungicides.
- Use integrated disease management to reduce disease pressure and reliance on fungicides.
- Avoid VS and S varieties whenever possible in disease-prone areas.
- Use an effective seed dressing for early crop protection.
- Apply effective fungicides as soon as the disease becomes apparent; early control is essential to maximise fungicide efficacy.
- Strobilurin-based products (Group 11) should be used as preventive control rather than curative control; rotate with
effective new generation DMI-based products (Group 3). - Do not use tebuconazole fungicide to control barley powdery mildew; it is no longer effective in Western Australia.
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Region: West
GRDC Project Code: CUR1106-001RTX,
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