Control options
- Use disease free planting material or grow from clean seeds.
- Do not replant from this year’s crop if disease is present.
- Use crop rotations by planting non-Allium species (no garlic, onion, spring onion, shallots).
- One option for crop rotations is green manure crops with biofumigant activity, such as mustard, that can help prevent the build-up of sclerotia in the soil.
- Registered fungicide treatments are available to protect the roots of growing plants against infection.
- Consider biological control options such as garlic juice, or pre-treating garlic cloves before planting.
- Implement biosecurity practices to prevent the transfer of infected soil or plant materials to other areas of your property/garden. This includes brush down and cleaning of shoes, clothing and equipment.
- For specific information on fungicide treatments contact your local agronomist, consultant or nursery.
For more information on control methods:
- Managing onion white rot in spring onions (Horticulture Australia Limited)
- Garlic diseases: white rot
- How to control onion white rot
Farm biosecurity is important
Commercial and backyard growers are reminded to implement strict biosecurity measures at all times to prevent infection or the spread of potentially contaminated soil and plants. This includes ensuring that any plants purchased are certified as disease free.
To prevent spreading the disease around the garden if present, gardeners should wash any soil from infected parts of the garden off boots and tools before working in other areas.