Various – Cotton/Melon Aphid (Aphis gossypii) and Green Peach Aphid (Myzus persicae)

Crop:         Various
Insect(s):  Cotton/Melon Aphid (Aphis gossypii) and Green Peach Aphid (Myzus persicae)

Guidelines:

1. Rotate between registered insecticides that have different modes of action (eg. Groups 1, 4, 9, 12A (cotton crop only), 23, 28 and 29).
2. DO NOT apply consecutive applications of insecticides that have the same mode of action within and between seasons or exceed the recommended maximum number of applications in a crop.
3. DO NOT follow a seed/seedling/soil treatment with a foliar application from the same Group.
4. The Modes of Action (Groups) and registered insecticides for control of cotton/melon aphid and/or green peach aphid are listed below.

*Refer: CropLife Australia Expert Committee on Insecticide Resistance Mode of Action Classification for Insecticides

Notes:

1. There is known cross-resistance between Groups 1A and 1B.  Rotate between Group 1 and Group 4, 9B, 12A, 23, 28 and 29.

2. Consecutive applications of a Group 4A and Group 4C product may be made only if no other effective option is available – either because

a) no other group is registered in the crop or

b) the target pest is resistant to the other Groups.

3. Seek advice from the manufacturers and/or government advisory services to determine local resistance levels for particular mode of action Groups.

4. DO NOT exceed the maximum number of applications permitted on the insecticide label.

5. When using insecticides/miticides to control other pests, consider the chemical group in relation to contributing to resistance development of Cotton/Melon Aphid and Green Peach Aphid.

6. When using insecticides/aphicides to control other pests consider the effect on beneficial insects and the potential to flare aphid populations.

7. For more information about insecticide resistance in the green peach aphid refer to http://cesaraustralia.com/latest-news/all/insecticide-resistance-in-the-green-peach-aphid

8. For more detail on resistance management of aphids in cotton refer to the current Cotton Pest Management Guide or for more detail on resistance management for Green Peach Aphid in grain refer to: http://ipmguidelinesforgrains.com.au/ipm-information/resistance-management-strategies/ or https://grdc.com.au/resources-and-publications/all-publications/factsheets/2015/07/grdc-fs-greenpeachaphid

Notes regarding the application of insecticides:

1. To ensure the most effective control of the pest:

• Product labels should at all times be carefully read and adhered to;
• Full recommended rates of registered insecticides should always be used; and
• Ensure good coverage of the target area to maximise contact.