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%)|
|Max. number of sprays per season||4-mix||2||3||4–mix|
|Areas of higher agronomic risk||Mix ||Mix ||N/A||Mix ||N/A
6. Group 40 -
do not apply as the last spray of the season.
- Group 40 - apply a maximum of 50% of the total number of downy sprays.
7. Group 11
– If applied alone, do not make consecutive applications.
8. Group 11
– apply a maximum of 2 sprays per season, including mixtures.