Disease(s): Yellow spot, powdery mildew
Resistance Management Strategy for:
Group 3 Demethylation inhibitors (DMI);
Group 7 Succinate dehydrogenase inhibitors (SDHI);
Group 7 + 3 SDHI + DMI;
Group 11 + 3 Quinone outside inhibitors (QoI) + DMI;
Group 11 + 4 QoI + phenylamides (PA); and
Group 11+7+3 QoI + SDHI + DMI; and
Group 50* Actin disruption aryl-phenyl-ketones.
- Fungicides should be used as protectant treatments prior to symptoms of disease when conditions are conducive to disease development.
- In high-risk disease environments, integrated management approaches should be used to reduce fungicide resistance risk, which may include:
- removal or burning of stubble,
- crop rotation (avoid wheat on wheat),
- control of green bridge volunteers; and
- use of tolerant and resistant varieties.
- Do not apply more than two applications per growing season of Group 11, or 7 containing products. This includes in-furrow or seed treatments that have activity on foliar diseases. Combinations of in-furrow and seed treatment are counted as one application.
- Do not apply consecutive applications of Group 11 containing products. This includes in-furrow i.e. If a Group 11+4 fungicide has been used in-furrow at planting, the first foliar fungicide spray must not contain a Group 11
- If a Group 7 seed treatment has been used with foliar activity (as determined by label claims), the first foliar fungicide applied should not contain a Group 7
- Do not apply more than one application of a Group 7 seed treatment with foliar activity in any two consecutive growing seasons.
- If a Group 7 or 11 fungicide is being applied as a foliar spray, it must be in a co-formulation or in mixture with a registered mixing partner with a different mode of action, with no known resistance. The mixture partner should also provide effective disease control when used alone on the target disease.
- Do not apply more than three applications containing Group 3 fungicides per growing season. This total of three applications includes DMIs applied as Group 11+3 or Group 11+7+3 co-formulations and in-furrow or seed treatments that have activity on foliar diseases. Combinations of in furrow and seed treatment are counted as one application.
- Minimise use of Group 3 fungicides which are known to have compromised resistance status.
- Do not apply Group 13 fungicides onto existing infections of powdery mildew. Always use preventatively. If applying consecutive applications, use an effective mixing partner.
- Reduced rates, including multiple applications must not be used. Always use label rates.