Resistance Management Strategy for:
Group 4 (Phenylamide);
Group 11 (Quinone outside Inhibitor);
Group 21 (Quinone inside Inhibitor);
Group 40 (Carboxylic acid amide); and
Group 45 (Quinone outside inhibitor, stigmatellin binding type) fungicides
- Apply all these fungicides preventatively, Group 4 fungicides should be applied before the first sign of oilspots or as soon as possible after an infection period.
- Mixtures - co-formulations or tank mixes with label rate of alternative mode of action
- Apply a maximum of two consecutive applications of any one group.
- Start preventative disease control sprays using non-Group 4 protectant fungicides, typically when shoots are 10-20cm long. Continue spraying at intervals of 7-21 days depending on disease pressure, label directions and rate of vine growth.
- Limit the use of Group 4 fungicides to periods when conditions favour disease development. Always apply Group 4 fungicides in mixtures.
|4||11||21 (+M1)||40||45 (+40)|
|Max. number of consecutive applications||2||None||2||2||2|
|Max. number of solo sprays||None||2||3||2 (50%)||None|
|Max. number of sprays per season||4-mix||2||3||4–mix|
|Areas of higher agronomic risk||Mix||Mix||N/A||Mix||N/A|
- Group 40 - apply a maximum of 50% of the total number of downy sprays.
CropLife Australia’s Resistance Management Strategies provide a guide for crop protection product rotation through product groups. The strategies are a useful tool that supports farmers’ adoption of resistance management.
All crop protection products must be handled and applied strictly as specified on the product label or APVMA permits. These Resistance Management Strategies do not replace product labels. They are a guide only and do not endorse particular products, groups of products or cultural methods in terms of their performance. It is important to check with the Australian regulator’s (APVMA) product database for contemporary information on products and active constituents. The database can be sourced through www.apvma.gov.au